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  • SANCTUARY MEANS LESS STRESS

    We all know how much stress the rumble and roar of daily life can put on our lives and our relationships. Making sure home is a welcome retreat can make all the difference to how we feel about ourselves and relate to one another. By reducing unwanted noise and maximizing comfort, Sanctuary can help bring life into balance.

    SANCTUARY MEANS LESS STRESS
  • SANCTUARY CAN MEAN IMPROVED HEALTH

    Not only does unwanted noise affect the state of our minds, but it also affects the state of our bodies as well. Research suggests that noise exposure may contribute to 14% of hypertension cases and 9% of high cholesterol cases.¹ Imagine what reducing sound power can mean for you.

    SANCTUARY CAN MEAN IMPROVED HEALTH
  • SANCTUARY MEANS BETTER SLEEP

    During sleep, the brain continues to register and process sounds, affecting everything from heart rate to blood pressure. Those changes, coupled with the noises themselves, can trigger nighttime waking or restlessness. All that waking, tossing and turning can lead to lower sleep satisfaction, sleepiness and mood changes. Worse still, insufficient sleep has been linked with obesity, diabetes, heart disease and other health issues.2 Luckily, reducing the impact sound has on bedrooms by even a small amount can improve sleep, health, mood and general positivity.

    SANCTUARY MEANS BETTER SLEEP
  • SANCTUARY MEANS MORE COMFORT

    When the temperature inside your home is equalized, your body doesn’t need to adjust as you move from one room to the next. Not having to react as you move through your home means your body will more easily reach and maintain a relaxed state of equilibrium. And, therefore, so will you.

    SANCTUARY MEANS MORE COMFORT
  • SANCTUARY MEANS IMPROVED LEARNING

    In addition to the reduced sleep, increased stress and general health issues adults suffer as a result of noise exposure, noise can also have a serious effect on a child’s ability to absorb, process and recall information. Noise exposure has been linked to poorer reading comprehension, standardized test scores and long-term memory3. By reducing the noise power in our homes, we can provide a better learning environment for our kids and a more peaceful space for them to explore their developing personalities.

    SANCTUARY MEANS IMPROVED LEARNING

With the perpetual pressures we face in the world, it just makes sense to do all we can to create an ideal environment at home. Self-care begins with Sanctuary.

IN A HECTIC WORLD,
YOUR HOME SHOULD BE
YOUR SANCTUARY.

Sanctuary® brings more peace, quiet and comfort to a house while supporting the health and well-being of those who call it home.




Do you want a Sanctuary® Home?
Ask your insulation contractor or builder today.

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SANCTUARY IS THE BETTER WAY

  • Managing Sound and Improving Privacy

    Sanctuary by Greenfiber offers market-leading sound insulation products that can reduce sound power by 60%¹ and are perfect for ensuring every room in the home remains peaceful and quiet.

  • Making More Comfortable Homes

    By installing our cellulose insulation by either dense-pack or spray application, you’ll be building a home with more consistent temperatures from room to room and floor to floor.

  • Providing Peace of Mind

    Sanctuary qualifies as a fire-blocking material, and in a large-scale fire test, it lasted 68 minutes – 60% longer than fiberglass batts.²

BUILD WELLNESS INTO WALLS,
CEILINGS AND FLOORS

Insulation can do much more than regulate temperature. With Greenfiber®, now you can offer your clients and customers Sanctuary® Homes.

Whether you are installing Sanctuary® in your attic or working with a contractor to have it installed in your attics, walls, ceilings or floors, it can forever change the way you and your family live and enjoy your home.

QUIET. COMFORTABLE.
PROTECTED.

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Insulation Calculator

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Homeowners

Reduce sound power by 60%¹ and bring more peace, quiet and comfort to your life.

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Contractors

Use the first all-in-one cellulose insulation product that can be loose-filled or spray-applied.

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Builders & Architects

Build quiet, comfortable, safe homes that promote well-being and give you a competitive edge.

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Imagine a home that
restores well-being

Reducing the power of sound and improving the comfort of your home can change the way you sleep, communicate, and live.

How-to & other videos

  • How to Install Greenfiber Insulation

    This video will help you determine your project needs and successfully installing the product.

That depends on four things: the recommended R-value, your climate, the type of heating and cooling system you have, and the section of the house you plan to insulate. For the recommended levels of insulation, the Department of Energy publishes this map with the R-values they recommend.

zone-chart.jpg#asset:374

A lot of stores will let you use the machine for free with a minimum purchase of Greenfiber. But even if you need to rent the machine, you won’t need it for long and your whole job should still be economical.

It’s made of cellulose, which is a basic part of plants (think wood pulp). Our cellulose insulation consists of up to 85% post-consumer paper fiber. It also contains additives for fire resistance, and some has been treated with boric acid for protection from pest infestation and moisture. What it doesn’t contain is also important: there’s no formaldehyde, asbestos or fibers from textiles, fiberglass or mineral wool in Greenfiber.

Here’s the deal. The more time you have to escape from a fire, the better. And our cellulose insulation can give you extra seconds that fiberglass insulation can’t. Want evidence? A large-scale outdoor fire demonstration, conducted by the Maryland Fire & Rescue Institute, found a structure insulated with cellulose insulation increased a simulated residential building’s structural fire resistance by as much as 57% over a structure with no insulation or one insulated with fiberglass batts. Learn more about the "Big Burn" demo.

We have a long list of additional fire safety credentials: Greenfiber has a Class1 fire rating from E 84 testing and is permitted as a fire block. It’s also manufactured to meet strict Consumer Product Safety Commission (CPSC) fire safety regulations, and all our products meet American Society for Testing and Materials (ASTM) C 739 and E 84 tests. Plus, Greenfiber has a growing list of fire resistance-rated buildings assemblies, of both wall and floor-ceiling type, that are listed in the Certification Directory of Underwriters Laboratories. All our products are classified by UL and carry the UL mark on every bag. Bottom line: you’re safer with Greenfiber than without it or than with any other type of insulation.

Nope.  Accelerated aging tests (CAN/CGSB-51.60 M-90) performed on cellulose insulation have shown that there’s no noticeable degradation over time. In addition, Greenfiber offers a limited lifetime warranty, which includes the permanency of the fire retardant treatment we use, for the life of the structure.

Where air goes, sound follows. Our sound control quality is due to Greenfiber’s density and its ability to fill any cavity since it’s easily blown into voids and gaps that could allow for sound transmission. Greenfiber is especially good at blocking airborne sound from traffic noise, airplanes, radios, televisions and conversation.

Greenfiber Insulation meets or exceeds standard industry tests (ASTM C 739) for corrosion resistance, performed on steel, copper and aluminum.

You bet. Our insulation is ideal for providing additional R-value over existing attic insulation since it completely fills voids and gaps left open by other forms of insulation. It can also be installed in existing uninsulated exterior walls through various methods.

Actually, it’s really easy. No kidding. There’s no lifting heavy rolls up through attic openings. Plus there’s no measuring, cutting or trying to fit stuff into tight nooks and crannies. You’ll just need two people — one to put the insulation in the blowing machine and another to blow the insulation to the desired thickness, which is easily measured by attic rulers. It can also be installed in existing uninsulated exterior walls through various methods such as the two-hole installation method and tube method.

It will settle in attics until it reaches a stable density, as will other types of blown insulation. Coverage charts have already taken this into account, so it’s nothing to worry about. In sidewalls, Greenfiber will not settle when properly installed.

No. And even better, it’s itch free to the touch, and it doesn’t have any glass fiber that can cause irritation when you’re handling it. In compliance with Material Safety Data Sheet standards, Greenfiber produces dust classified as “nuisance,” and you’d probably only notice this dust during installation, if ever. Therefore we recommend using a dust mask and safety glasses while you’re installing Greenfiber.

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Some Helpful Information

US GreenFiber LLC

5500 77 Center Drive, Suite 100

Charlotte, NC  28217

------------------------------------------

Toll Free: 800-228-0024

Fax:        704-522-3748

MANUFACTURING LOCALLY

With seven manufacturing plants located throughout the United States and Canada, we’re able to quickly and efficiently serve the needs of local homeowners, contractors and builders. No one makes more cellulose insulation in North America. But we’re not stopping there. We’re committed to growing our manufacturing and distribution capabilities and are always looking for new ways to meet the changing needs of all of our customers.

  • Tampa, FL
  • Waco, TX
  • Mesa, AZ
  • Salt Lake City, UT
  • Norfolk, NE
  • Wilkes Barre, PA
  • Debert, Nova Scotia
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Our Commitment To Privacy

Your privacy is important to us. To better protect your privacy we provide this notice explaining our online information practices and the choices you can make about the way your information is collected and used. To make this notice easy to find, we make it available on our homepage and at every point where personally identifiable information may be requested.

The Information We Collect:

This notice applies to all information collected or submitted on the GreenFiber, LLC website. On some pages, you can order products, make requests, and register to receive materials. The types of personal information collected at these pages are:

Name
Address
Email address
Phone number

On some pages, you can submit information about other people. For example, if you order a literature online and want it sent directly to the recipient, you will need to submit the recipient's address. In this circumstance, the types of personal information collected are:

Name
Address
Phone Number
The Way We Use Information:

We use the information you provide about yourself when placing an order only to complete that order. We do not share this information with outside parties except to the extent necessary to complete that order.

We use the information you provide about someone else when placing an order only to ship the product and to confirm delivery. We do not share this information with outside parties except to the extent necessary to complete that order.

We use return email addresses to answer the email we receive. Such addresses are not used for any other purpose and are not shared with outside parties.

If and when the web site offers registration to receive literature as well as updates on our new products and services, information you submit on our website will not be used for this purpose unless you fill out a registration form.

Our Commitment To Data Security

To prevent unauthorized access, maintain data accuracy, and ensure the correct use of information, we have put in place appropriate physical, electronic, and managerial procedures to safeguard and secure the information we collect online.

Our Commitment To Children's Privacy:

Protecting the privacy of the very young is especially important. For that reason, we never collect or maintain information at our website from those we actually know are under 13, and no part of our website is structured to attract anyone under 13.

How To Contact Us

Should you have other questions or concerns about these privacy policies, please call us at 800-228-0024 or send us an email at [email protected]
.

Terms & Conditions of Website Usage


Welcome to our website. The term "GreenFiber" or “us" or “we" refers to the owner of the website whose registered office is 2500 Distribution St., Suite 200, Charlotte, NC 28203. The term “you" refers to the user or viewer of our website.

The use of this website is subject to the following terms of use:

  • The content of the pages of this website is for your general information and use only. It is subject to change without notice.
  • Neither we nor any third parties provide any warranty or guarantee as to the accuracy, timeliness, performance, completeness or suitability of the information and materials found or offered on this website for any particular purpose. You acknowledge that such information and materials may contain inaccuracies or errors and we expressly exclude liability for any such inaccuracies or errors to the fullest extent permitted by law.
  • Your use of any information or materials on this website is entirely at your own risk, for which we shall not be liable. It shall be your own responsibility to ensure that any products, services or information available through this website meet your specific requirements.
  • This website contains material which is owned by or licensed to us. This material includes, but is not limited to, the design, layout, look, appearance and graphics. Reproduction is prohibited other than in accordance with the copyright notice, which forms part of these terms and conditions.
  • All trademarks reproduced in this website, which are not the property of, or licensed to the operator, are acknowledged on the website.
  • Unauthorized use of this website may give to a claim for damages and/or be a criminal offence.
  • From time to time this website may also include links to other websites. These links are provided for your convenience to provide further information. They do not signify that we endorse the website(s). We have no responsibility for the content of the linked website(s).
  • You may not create a link to this website from another website or document without GreenFiber's prior written consent.
  • Your use of this website and any dispute arising out of such use of the website is subject to the laws of the United States.

Please let us know how we can help you. Or if you’ve got a Greenfiber story to share, we’d like to hear it.

Address:

US Greenfiber LLC
5500 77 Center Drive, Suite 100
Charlotte, NC 28217

Phone/Fax:

Toll Free: 800-228-0024
Fax: 704-522-3748

Contact Form:





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UL Certifications

Product Designation Applicable Fire-Resistive Design(s)
FRM (Fire-Rated Material) U370, U377
SANCTUARY, INS735, INS 745, INS765LD, INS770LD G524, L521, L528, L546, L576, L582, M509, M512, P522, U023, U032, U036, U040, U053, U305, U309, U311, U317, U321, U326, U330, U331, U333, U338, U339, U340, U341, U342, U344, U354, U355, U356, U398, U403, U411, U412, U420, U425, U426, U428, U429, U434, U435, U436, U438, U440, U460, U462, U463, U465, U466, U467, U469, U470, U471, U477, U478, U495, U498, U499, U528, U622, U646, U647, U648, U651, V302, V303, V401, V410, V414, V416, V421, V455, V472, V481, V493, V495, W405, W419
INS510LD, INS515LD, INS541LD P522, U032, U036, U305, U309, U311, U317, U321, U326, U330, U331, U333, U338, U339, U340, U341, U342, U344, U354, U355, U356, U398, U528, V302, V303
LEED-Logo-1.png#asset:763


LEED Green
Building Certification

To earn certification under the U.S. Green Building Council’s (USGBC) Leadership in Energy and Environmental Design (LEED) rating system, projects must not only satisfy all LEED system prerequisites, but also earn a minimum number of credits.

Greenfiber meets five significant criteria used in the USGBC LEED certification ratings system:

  • Improve building durability
  • Rental machine accessories list
  • Conserve energy and electricity
  • Reduce demand for raw material
  • Improve indoor environmental quality

When applied properly, Greenfiber’s fiber insulation products will contribute materially toward earning points in an LEED certification for LEED Green Building Design and Construction Rating System (BD + C) and LEED for Homes Rating System.

You can read more about Greenfiber’s insulation contribution points here. You can also read a detailed report about Greenfiber insulation products and LEED projects and a case study of Greenfiber insulation in a LEED Gold Certified Building.



UL Certifications

Product Designation Applicable Fire-Resistive Design(s)
FRM (Fire Rated Material) U370, U377
SANCTUARY, INS735, INS745, INS765LD, INS770LD G524, L521, L528, L546, L576, L582, M509, M512, P522, U023, U032, U036, U040, U053, U305, U309, U311, U317, U321, U326, U330, U331, U333, U338, U339, U340, U341, U342, U344, U354, U355, U356, U398, U403, U411, U412, U420, U425, U426, U428, U429, U434, U435, U436, U438, U440, U460, U462, U463, U465, U466, U467, U469, U470, U471, U477, U478, U495, U498, U499, U528, U622, U646, U647, U648, U651, V302, V303, V401, V410, V414, V416, V421, V455, V472, V481, V493, V495, W405, W419
INS510LD, INS515LD, INS541LD P522, U032, U036, U305, U309, U311, U317, U321, U326, U330, U331, U333, U338, U339, U340, U341, U342, U344, U354, U355, U356, U398, U528, V302, V303

¹ According to Brookhaven National Laboratory Study comparing fiberglass batts to blow-in cellulose insulation. Savings vary. The higher the R-value, the greater the insulating power. Ask your seller for the fact sheet on R-value.
² According to Oak Ridge National Laboratory Study (1991) comparing fiberglass loose fill insulation to blow-in cellulose insulation. Savings vary. The higher the R-value, the greater the insulating power. Ask your seller for the fact sheet on R-value.

¹ Savings vary. Find out why in the seller's fact sheet on R-values. Higher R-values mean greater insulating power. Based on energy analysis of climate zones 1–7 using 2018 IECC reference home comparing R11 attic to DOE recommended attic insulation by climate.

¹ Savings vary. Find out why in the seller's fact sheet on R-values. Higher R-values mean greater insulating power. Based on energy analysis of climate zones 1–7 using 2018 IECC reference home comparing R11 attic to DOE recommended attic insulation by climate.
² As demonstrated by The Large Scale Outdoor Fire Test Program comparing the fire performance of three structures: (1) an uninsulated structure; (2) a structure insulated with R-13 fiberglass batts (wall cavities) and blown-in, loose fill insulation (attic floor); and (3) a structure insulated with Greenfiber’s cellulose insulation using spray applied cellulose insulation (wall cavities) and blown-in, loose-fill cellulose insulation (attic floor) - Prepared by Steven Winter Associates Inc.

1 The guarantee is for projected energy use, not dollars. The guarantee applies only to energy used for heating and cooling. The guaranteed usage is calculated by a software program that considers typical energy consumption for heating and cooling in a similar home configuration and will be determined when each home is delivered. The guaranteed usage assumes the home is kept at a temperature no greater than 72 degrees in the winter and no less than 75 degrees in the summer. Actual usage will be calculated by deducting the base load from the total energy usage over a 12-month period, excluding the first month of occupancy. Base load is the average of the three months with the lowest energy usage in the past 12-month period. Any difference in energy use will be paid at resident’s current utility rates at the time of the claim based upon actual energy usage over the 12-month period. Guarantees are currently available to builders that meet program criteria in select markets only.

2 To participate in the Custom Comfort Solutions Program, the home must be built to an energy rating of 60 or below on the Home Energy Rating System (HERS) Index. When the program requirements are met, the home will be 40% more energy efficient as compared to a 2006 International Energy Conservation Code compliant home with a HERS Index score of 100. The builder must ensure compliance with applicable building codes and manufacturer requirements. When building in an area with no building code in effect, the builder must comply with the requirements of the current IECC for all items not addressed in the Custom Comfort Solutions Program. Guarantees are currently available to builders that meet program criteria in select markets only.

3 As compared to homes built to 2006 IECC code.

4 Greenfiber offers a full breadth of fire assemblies. Based on U305 assembly.

¹ Savings vary. Find out why in the seller's fact sheet on R-values. Higher R-values mean greater insulating power. Based on energy analysis of climate zones 1–7 using 2018 IECC reference home comparing R11 attic to DOE recommended attic insulation by climate.


¹ Savings vary. Find out why in the seller's fact sheet on R-values. Higher R-values mean greater insulating power. Based on energy analysis of climate zones 1–7 using 2018 IECC reference home comparing R11 attic to DOE recommended attic insulation by climate.
² As demonstrated by The Large Scale Outdoor Fire Test Program comparing the fire performance of three structures: (1) an uninsulated structure; (2) a structure insulated with R-13 fiberglass batts (wall cavities) and blown-in, loose fill insulation (attic floor); and (3) a structure insulated with Greenfiber’s cellulose insulation using spray applied cellulose insulation (wall cavities) and blown-in, loose-fill cellulose insulation (attic floor) - Prepared by Steven Winter Associates Inc.
³ Comparison based on an R-30 value at one square foot coverage area. This comparison includes the production and energy used in the insulation manufacturing process. Based on Sustainability Impact Index – Prepared by Principal Partners.

¹ Savings vary. Find out why in the seller's fact sheet on R-values. Higher R-values mean greater insulating power. Based on energy analysis of climate zones 1–7 using 2018 IECC reference home comparing R11 attic to DOE recommended attic insulation by climate.

² As demonstrated by The Large Scale Outdoor Fire Test Program comparing the fire performance of three structures: (1) an uninsulated structure; (2) a structure insulated with R-13 fiberglass batts (wall cavities) and blown-in, loose fill insulation (attic floor); and (3) a structure insulated with Greenfiber’s cellulose insulation using spray applied cellulose insulation (wall cavities) and blown-in, loose-fill cellulose insulation (attic floor) - Prepared by Steven Winter Associates Inc.

³ According to Brookhaven National Laboratory Study comparing fiberglass batts to blow-in cellulose insulation. Savings vary. The higher the R-value, the greater the insulating power. Ask your seller for the fact sheet on R-value.

⁴ According to Oak Ridge National Laboratory Study (1991) comparing fiberglass loose fill insulation to blow-in cellulose insulation. Savings vary. The higher the R-value, the greater the insulating power. Ask your seller for the fact sheet on R-value.

1 In field testing on identical 2x4 exterior wall types Greenfiber R-13 Stabilized Spray-In Insulation outperforms R-15 unfaced fiberglass batts by 4 NIC rating points, which equates to a 60% reduction in sound power. See our installation instructions for full details on how to meet specifications and maximize sound reduction.

3 As demonstrated by The Large-Scale Outdoor Fire Test Program comparing: (1) an uninsulated structure; (2) a structure insulated with R-13 fiberglass batts (wall cavities) and blown-in, loose fill insulation (attic floor); and (3) a structure insulated with Greenfiber’s cellulose insulation using spray applied cellulose insulation (wall cavities) and blown-in, loose-fill cellulose insulation (attic floor) - Prepared by Steven Winter Associates Inc.

4 UL Evaluation Report, 2015 & 2018 IRC, 2015 & 2018 IBC.

5 Comparison based on an R-30 value at one square foot coverage area. This comparison includes the production and energy use in the insulation manufacturing process. Based on Sustainability Impact Index - Prepared by Principal Partners.

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How-to & other videos

  • How to Install Greenfiber Insulation

    This video will help you determine your project needs and successfully installing the product.
  • How to Calculate your R-Value with Greenfiber

    R-value is a measure of resistance to heat flow through a given thickness of material.
  • Big Burn Demo

    Fire-treated cellulose insulation can provide over 50% more fire resistance than traditional fiberglass insulation.
  • Calibrating the Machine

    This video will show you how to calibrate the machine and reach the desired densities when installing in walls.
  • Dense-Packing a Wall Cavity

    This video will show you how to dense-pack a wall cavity using a 1-hole method with a nozzle.
Layla Phillips

Layla Phillips

Alabama, Florida, Georgia, Mississippi, North Carolina, South Carolina, Tennessee
386-872-0515
A note from Layla

Hi. I am Layla Phillips and I provide contractors, distributors and retail owners like you with a focus that helps both our companies grow together with a partner approach, finding the value-add we can deliver to your market.

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Erick Peril

Erick Peril

Arkansas, Louisiana, Oklahoma, Texas
682-300-3223
A note from Erick

After 30 years in the floor covering industry, I joined Greenfiber eight months ago and have enjoyed every minute of it. I am passionate about selling products that will not only make the customer feel comfortable and save them money, but also diverts material that would otherwise and up in a landfill. My customers are the most important thing to me, and I will go the extra mile to make sure they are taken care of.

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Brett Moore

Brett Moore

Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, South Dakota
402-637-3998
A note from Brett

I have over 35 years of experience in the residential and commercial construction industry in such roles as territory sales management, customer service and warehouse management. I specialize in building successful sales strategies with distributors, lumber dealers, contractors and architects. I am available to answer any questions and provide any technical information or assistance as needed. I look forward to hearing from you and finding the best solution for your insulation needs.

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Randy Mitchell

Randy Mitchell

Colorado, Idaho, Montana, Nevada (Northern), Oregon, Utah, Washington, Wyoming
801-541-6252
A note from Randy

I have been in the building science industry for over 23 years. My specialty is thermal, sound and fire protection for private residences and multi-family dwellings. I work closely with distributors, professional insulation contractors, weatherization agencies and retrofit contractors. I’m well versed in cellulose and foam insulations. My territory is the Rocky Mountain States and I live in Salt Lake City, UT. 

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Reda Ouchna

Reda Ouchna

Delaware, District Of Columbia, Maryland, New Jersey, Virginia, West Virginia
410-375-9199
A note from Reda

I have 22 years of experience in sales and sales management, with seven years in the commercial and residential construction industry. I specialize in firestop/fire suppression, structural design and UL testing, and have done extensive work with architects, structural engineers and builders. I am available to answer any questions and provide any technical information or assistance as needed. I look forward to hearing from you and finding the best solution for your insulation needs.

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Matt Olivieri

Matt Olivieri

Arizona, California (Northern), California (Southern), New Mexico, Nevada (Las Vegas)
480-490-5752
A note from Matt

I have been in the building products sector for over 15 years in various capacities and industries. During this time I have developed strong relationships at the distributor, builder, A&D, contractor and retail levels. At Greenfiber I am responsible for managing and developing the Southwest Region, consisting of Arizona, Southern California, New Mexico, and Las Vegas. I strive to give results-orientated solutions that service the customer’s needs.

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Christa Manning

Christa Manning

Illinois, Indiana, Kentucky, Michigan, Ohio, Pennsylvania, Wisconsin
570-956-1982
A note from Christa

I joined Greenfiber in 2015 in Customer Service in our Wilkes-Barre plant and quickly moved into a Customer Liaison role for the Northeast region where I had the ability to improve our customer relationships. I pride myself on providing a best-in-class experience for my customers and end-users. Please call or email me with your questions or needs. 

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Jim Foley

Jim Foley

Connecticut, Maine, Massachusetts (East), Massachusetts (West), New Hampshire, New York (Northern), New York City and The Hudson Valley, Rhode Island, Vermont
413-668-8287
A note from Jim

I have been in the building products industry for the last 30 years, specializing in cellulose insulation for the last seven. I started National Fiber, focusing on the benefits of cellulose, and brought that same mentality to Greenfiber when the two companies merged. It is still my belief that cellulose is the most cost-effective and environmentally friendly insulation a builder or homeowner can use. I am available to answer any questions and provide any technical information or assistance as needed. I look forward to hearing from you and finding the best solution for your insulation needs.

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Please contact us for sales opportunities and assistance in your area.

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Technical documents & brochures

  • Grenfiber Sound White Paper
     
    White Papers
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  • SDS - INS200 Agritherm
     
    Safety Data Sheets
    687.06 KB | PDF
  • SDS - Sanctuary Stabilized Borate Formula
     
    Safety Data Sheets
    273.23 KB | PDF
  • SDS - INS506 Blended Stabilized Formula
     
    Safety Data Sheets
    401.24 KB | PDF
  • SDS - Fire Rated Material (FRM)
     
    Safety Data Sheets
    688.43 KB | PDF
  • SDS - 515 Loose Fill Blended
     
    Safety Data Sheets
    687.44 KB | PDF
  • SDS - 541 Loose Fill Blended
     
    Safety Data Sheets
    687.78 KB | PDF
  • Big Burn Report Summary
     
    Safety & Performance Documents
    7.07 MB | PDF
  • SANCTUARY FRM Safety Data Sheet
     
    Safety & Performance Documents
    688.43 KB | PDF
  • LEED for Homes Contribution Chart
     
    Safety & Performance Documents
    917.17 KB | PDF
  • Vapor Barrier Bulletin
     
    Safety & Performance Documents
    130.92 KB | PDF
  • Retrofit Your Home with Greenfiber Insulation
     
    Product Brochures
    519.95 KB | PDF
  • SANCTUARY Advantages In New Home Construction
     
    Product Brochures
    1.77 MB | PDF
  • Fire Rated Material - FRM
     
    Product Brochures
    556.27 KB | PDF
  • Greenfiber Fire & Sound Assembly Brochure
     
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    2.18 MB | PDF
  • Homeowner FAQ
     
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  • Fire Rated Material Multi-Family Brochure - FRM
     
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  • ULTIMATE IN SANCTUARY Brochure
     
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  • SANCTUARY Home Brochure
     
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  • Greenfiber Homeowner Guide - Planning & Instructions
     
    Product Brochures
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  • SANCTUARY 2-Hour Firewall Townhome Advantages Sell Sheet
     
    Product Brochures
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  • Cathederal Ceiling Application Guide
     
    Installation Guides
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  • Cathedralized Unvented Attic Application Guide
     
    Installation Guides
    392.53 KB | PDF
  • Contractor Retrofitting Sidewall Installation Guide
     
    Installation Guides
    1.46 MB | PDF
  • SANCTUARY 2-Hour Firewall Installation Guide
     
    Installation Guides
    776.95 KB | PDF
  • Wall Spray Manual for SANCTUARY Insulation
     
    Installation Guides
    6.43 MB | PDF
  • Dry Dense-Packing Wall & Floor Assembly Guide
     
    Installation Guides
    253.48 KB | PDF
  • Attic Floor Installation Instructions for Contractors
     
    Installation Guides
    355.36 KB | PDF
  • DIY Attic Installation Guide
     
    Installation Guides
    1.32 MB | PDF
  • SANCTUARY Fact Sheet
     
    Fact Sheets
    715.77 KB | PDF
  • FRM Fact Sheet
     
    Fact Sheets
    411.59 KB | PDF
  • INS200 Fact Sheet
     
    Fact Sheets
    1.33 MB | PDF
  • INS765 Fact Sheet
     
    Fact Sheets
    540.03 KB | PDF
  • INS541LD Fact Sheet
     
    Fact Sheets
    1.07 MB | PDF
  • INS506 Fact Sheet
     
    Fact Sheets
    621.89 KB | PDF
  • INS515 Fact Sheet
     
    Fact Sheets
    869.62 KB | PDF
  • INS550 Fact Sheet
     
    Fact Sheets
    710.89 KB | PDF
  • INS200 Agritherm Attic Card
     
    Coverage Charts
    1.59 MB | PDF
  • SANCTUARY Attic Card
     
    Coverage Charts
    467.4 KB | PDF
  • INS515LD Attic Card
     
    Coverage Charts
    993.83 KB | PDF
  • FRM100 Attic Card
     
    Coverage Charts
    369.9 KB | PDF
  • INS765LD Attic Card
     
    Coverage Charts
    472.91 KB | PDF
  • INS541LD Attic Card
     
    Coverage Charts
    1.32 MB | PDF
  • INS506LD Attic Card
     
    Coverage Charts
    621.89 KB | PDF
  • Two-Hour Firewall Field Test Form
     
    Certificates & Forms
    436.54 KB | PDF
  • Two-Hour Firewall Checklist
     
    Certificates & Forms
    109.05 KB | PDF
  • Limited Lifetime Warranty
     
    Certificates & Forms
    151.57 KB | PDF
  • UL Evaluation Report
     
    Certificates & Forms
    192.14 KB | PDF
  • 2018 Manufacturer's Certificate for LADWP Rebate
     
    Certificates & Forms
    473.96 KB | PDF
  • Submittal Form
     
    Certificates & Forms
    200.8 KB | PDF
  • CSI-3 Part Specification
     
    Certificates & Forms
    258.03 KB | PDF
  • INS745 Attic Card
     
    Archived
    951.43 KB | PDF
  • INS735 Attic Card
     
    Archived
    2 MB | PDF
  • SDS - Loose Fill Borate Formula
     
    Archived
    2.2 MB | PDF
  • SDS - Stabilized Borate Formula
     
    Archived
    1.8 MB | PDF
  • INS773LD Expanded Coverage Chart
     
    Archived
    170.28 KB | PDF
  • INS773LD Attic Card
     
    Archived
    455.83 KB | PDF
  • Cel-Pak Fact Sheet
     
    Archived
    455.83 KB | PDF
  • INS750LD Fact Sheet
     
    Archived
    681.68 KB | PDF
  • SDS - Stabilized Blended Formula
     
    Archived
    2.6 MB | PDF
  • Project Checklist
     
    199.37 KB | PDF
  • Machine Conversion Sheet
     
    206.42 KB | PDF
  • Sell Sheet
     
    678.02 KB | PDF
  • Blowing Machine Prep
     
    581.32 KB | PDF
  • FRM - Fire & Sound Brochure
     
    5.03 MB | PDF
  • Fire and Sound Brochure
     
    2.41 MB | PDF

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Go right to the source.

We love talking with journalists, bloggers and anyone else interested in telling Greenfiber’s story. Reach out to us!

Laura Woodford

Sr. Marketing Manager

980.240.0741

Downloads

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From TV features to online articles, we want to share what the world is saying about us.

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This is the air leakage rate, defined as the number of air changes per hour that occur in a building. This is determined with a blower door with a 50 pascal pressure difference between the inside and outside of a building and then extrapolated for the natural building pressures that occur annually.

Just like it sounds, an air barrier is any physical barrier that physically prevents the movement of air and doesn’t have holes, crack, penetrations, etc. in it.

Short version: Insulation is all about preventing this. Long version: Air infiltration refers to either the process of unconditioned air entering a conditioned space (like outside air getting into a building) or conditioned air migrating to an unconditioned space (like heated air escaping to an attic or to the outdoors.) Air drives change with the seasons, and are affected by things like air pressures and wind. As a rule, however, air will move from the hot side to the cold side. That means during the winter, air is more likely to move from the inside to the outside, while the reverse is true in the summer. Air infiltration is a direct result of several factors, including unsealed penetrations (joints, cracks, and holes), insulation materials of insufficient density to effectively limit or prevent infiltration, poor installation, lack of air sealing, etc. Air infiltration is one of the four ways that heat moves through a structure.

Short version: It’s how you plug stuff up, and  you should do it before your insulate. Long version: The process by which very small holes, cracks, penetrations and joints which could allow the passage of air from the interior to the exterior, or vice versa, or between areas of a building (such as living space to attic space) are sealed or closed off, using caulking, canned foams, etc. Proper air sealing should precede any insulation job.

An inorganic salt often used to reduce the amount of borate needed to achieve a Class A fire rating in cellulose insulation. Ammonium sulfate may, in the presence of sufficient moisture, produce ammonia smells and lead to the corrosion of metal pipes, fasteners, etc. GreenFiber produces several products, including Cel-Pak, that are an all-borate formulation and which do not include any ammonium sulfate in them in their manufacture.

Short version: Places to install insulation. Long version: In terms of structures and insulation, these words refer to any enclosed space that can effectively contain insulation. For example, a stud bay in a wall will be bounded by a top and bottom plate, wall studs on the left and right, sheathing on the exterior and wallboard on the interior, forming an assembly. The same would hold true for a rafter bay in a cathedral ceiling. Both of these would be referred to as “assemblies.”

American Society for Testing and Materials - ASTM International is one of the largest voluntary standards development organizations in the world and a source for technical standards for materials, products, systems, and services.

A test method using flame spread and smoke-developed densities, which is designed to measure the relative burning behavior of a material. Materials with lower flame spread and smoke-developed values are considered more “fire safe” since they would give occupants a better chance of escaping a fire.

Plain speak version: Sunlight is attenuated by dark glasses, X-rays are attenuated by the metal lead, and sound is attenuated by dense packed cellulose insulation. Technical version: The gradual loss in intensity of any kind of flux, or rate of flow, through a medium.

A blower door is a tool used by an Energy Auditor which lowers the air pressure inside a building, allowing outside air to flow in through all unsealed cracks and openings.

Blower doors consist of a frame and flexible panel that fits in an exterior doorway, a variable-speed fan, a pressure gauge to measure the pressure differences inside and outside the home, and instruments for measuring airflow.

Blower doors are either calibrated or uncalibrated. The latter can only locate leak paths in a home, but can’t measure the overall tightness of the building, expressed in air exchanges per hour. Use of a calibrated blower door is preferred, and will provide data that quantifies the amount of air leakage and the effectiveness of air-sealing.

An unfilled assembly. (See Assembly). May also refer to an open assembly before the application of interior wallboard, paneling, etc.

As it concerns cellulose insulation, coverage refers to either a) the square footage of an open area, such as an attic floor, that can be covered to a specified depth by a single bag of material or b) the cubic footage of a cavity or assembly that can be dense packed, typically to 3.5 lbs. of material per cubic foot, by a single bag of material.

An ASTM E-84 fire test used to determine the fire performance in wall and roof / ceiling assemblies. Class A or Class 1 ratings pertain to those products that have a flame spread of 25 or less and a smoke developed rating of 450 or less. A Class A or 1 rating is considered the most 'fire safe'. These fire ratings also influence the code decisions on what materials can be left exposed without the need for a 15 minute thermal barrier such as drywall.

The standard unit for measuring air leakage in buildings with a blower door. These are expressed in Cubic Feet of air per Minute at a pressure differential of 50 pascals, typically between the inside of the building and the outside.

Conduction (or heat conduction) is the transfer of thermal energy between neighboring molecules in a substance due to a difference of temperature. It always takes place from a region of higher temperature to a region of lower temperature, and acts to equalize temperature differences. Conduction is one of the four ways heat moves through a structure.

Refers to airborne heat carried through a structure or building assembly, one of the four ways in which heat moves through a structure.

The Consumer Product Safety Commission

Damp sprayed cellulose refers to cellulose insulation to which a small amount of moisture is added during application. It is most often applied in new construction where cavities are open, just before the application of interior coverings such as wallboard, drywall or paneling. The moisture serves to activate starches in the cellulose, allowing it to adhere both to itself and to the surfaces of the cavity.

'Dense packed' refers to cellulose insulation installed in a cavity or assembly, either dry-blown or damp-sprayed, to a density of 3.2-3.5 lbs. of material per cubic foot of space, or approximately twice the settled density of the material. The process by which a space is dense packed is referred to as "dense packing".

An acronym for 'Do-It-Yourself'.

Embodied energy is a measurement of the energy that it takes to manufacture something, and one way to quantify a product's environmental impact. Simply put, if it takes less energy to manufacture one product versus another, it means that product has less negative impact on the environment - sometimes a lot less - and that's good for everyone. Greenfiber is especially stingy in this regard, when compared to the alternatives. Relative to cellulose insulation, fiberglass and foam insulations take much more energy to produce.


A more comprehensive approach to embodied energy is to look at the Global Warming Potential and Life Cycle Analysis measurements relative to energy usage. According to the University of Minnesota's 'Minnesota Sustainable Housing Initiative' research, by these measures, when compared to cellulose insulation, the life cycle of fiberglass batts feature:


  • 683% greater energy consumption
  • 728% greater global warming potential (in lbs. of CO2) and an
  • 1,850% higher air pollution index

That's not good. Sprayed foams? They take far more energy to produce than fiberglass, which means they have far worse environmental effects.


If you want to save money on energy and take it easier on the environment over time, Greenfiber cellulose is a great choice! Insulating your home or business with our cellulose insulation products is an opportunity to do well (save money) by doing good (lessening your environmental impact)!

An Energy Audit is a comprehensive evaluation of a structure to determine its relative efficiency, the efficiency of its systems and the need for air sealing. It typically is performed by a trained professional, who prepares a list of recommendations or upgrades to be considered in lowering a structures total energy usage.

When referring to cellulose insulation, 'fiberized' or 'fully fiberized' refers to the reduction of the paper raw material to the original state of long cellulose fibers, bearing no resemblance to the source material. Proper and complete fiberization is key to both the insulating and fire resistance capabilities (after the addition of mineral borate) of cellulose insulation.

Fire blocking refers to both the component and the process of installing a physical barrier, called a 'fire block' and typically made out of wood, in a cavity, the purpose of which is to slow the progression of fire and/or flame in the event that a cavity is compromised during a fire. Fire blocking can be either eliminated or greatly reduced through the use of cellulose insulation, due to its inherent capability to prevent the spread of flames.

In construction, a firewall is a wall assembly with a code-rated fire resistance intended to slow the spread of fire from one side to the other.

Greenwashing is a negative term and has a meaning similar to that of 'whitewashing'. It is most often used to describe efforts by corporations to portray themselves or their products as more environmentally friendly or responsible than is the actual case. From a marketing standpoint, it is considered an exaggeration of environmental benefit without discussing environmental downsides.

Refers to the paper making process in which 10% or more or the wood pulp is produced from mechanical means such as grinders.

The transfer of thermal energy by conduction, convection and radiation from areas of higher energy intensity, or warmer areas, to lower energy intensity, or cooler areas.

Resistant to water, non-absorptive. Glass fiber and sprayed foam insulations are typically hydrophobic, that is, they do not readily absorb and manage moisture, but rather provide possible condensing surfaces.

Readily take up and/or retain moisture. When referring to cellulose insulation, the hygroscopic properties of cellulose allow it to manage the natural humidity drives that occur in all structures, allowing assemblies to gradually transmit airborne moisture.

International Building Code

Impact Insulation Class refers to how well impact noise is transmitted through a floor system. Unlike airborne sound transmission, impact noise is primarily transmitted through the floor joists and therefore needs to be separated with resilient channel. The higher the value, the better the floor isolates the sound.

These are the open spaces or pathways that exist and interconnect in buildings between the walls and ceilings. These offer pathways for fire, heat, odor, insects and vermin to travel and remain hidden from the building occupants.

International Residential Code

A term used to describe installation in an unrestrained space or cavity, such as in an attic, where cellulose would be loose-blown over the attic floor.

The National Fire Protection Association

Particularly when referring to indoor air quality, is the slow release from a material, over a period of time, of a gas or chemical that was previously contained in or trapped in that material, either by design or use in the manufacturing process.

Over-issue or over-issued newsprint refers to newspapers that are printed but not purchased by consumers. For example, the Boston Globe may produce and distribute 1,000,000 newspapers on a given day, and have 250,000 returned unpurchased. These are over-issue newsprint and Greenfiber purchases them in bulk for upcycling into cellulose insulation.

A measurement used to determine how fast water vapor is able to move through the pores of a material. A material with a perm rating of less than one, as defined by ASTM E-96, is commonly referred to as a vapor barrier.

Thermal radiation is one of the four ways by which heat moves through a structure. Thermal radiation is electromagnetic radiation emitted from the surface of an object, due to the object's temperature. Infrared radiation from a household radiator or electric heater, or the light emitted from a typical incandescent light bulb, are common examples of thermal radiation.

R-Value is a measure of a material's thermal conduction (see conduction). Unfortunately, R-Value has taken hold in the consumer's mind as a universal method for comparing insulations - the higher the R-Value, the better the insulation performance, which isn't the case. R-Value measures only thermal conduction, just one of the factors that determine how an insulation product will perform in the real world.

R-value is a measure of resistance to heat flow through a given thickness of material. While R-Value is one way of comparing insulations — the higher the R-Value, the better the insulation performance, it is just one of the factors that determine how an insulation product will perform in the real world. Insulation is, first and foremost, meant to stop the movement of heat. The problem with using R-Value as the sole yardstick of an insulation's effectiveness is that heat moves out of your home or office in four ways: by conduction (which R-value measures), and by convection, radiation, and air infiltration (none of which R-value measures).

Retrofitting refers to the process of installing insulation in a finished, presumably older, structure. The process involves, typically, removing a band of exterior siding for each story, drilling holes to allow access to stud bays, installing dense-packed cellulose insulation, sealing the holes and replacing the siding.

Settled density refers to the final density of a material after a period of time, allowing for natural settlement, vibration, the effects of gravity, etc. It is the density of a material after these natural settlement processes have concluded. Cellulose insulation has a settled density of app. 1.5 lbs. per cubic foot.

Open cell/Low Density, Closed Cell/High Density

Cellulose insulation that contains additional amounts of starch or binders that when activated with moisture allows the cellulose, in theory, to be applied in an attic loose-fill application and not experience any settling.

Stabilized insulation reduces settling and decreases the amount of cellulose needed. This can prove advantageous at reducing the overall weight on the ceiling drywall helping prevent possible sag.

Stack effect is the movement of air into and out of buildings, chimneys, flue gas stacks, or other containers, driven by buoyancy. Buoyancy occurs due to a difference in indoor-to-outdoor air density as a result of temperature and moisture differences. The result is either a positive or negative buoyancy force. The greater the thermal difference and the height of the structure, the greater the buoyancy force, and thus the stack effect. The stack effect is also referred to as the 'chimney effect', and it helps drive natural ventilation and infiltration.

The Sound Transmission Class (STC) rating is a single-number rating of a material's ability to resist airborne sound transfer at the frequencies 125-4000 Hz. In general, a higher STC rating indicates better airborne sound attenuation performance than the same or similar material with a lower rating. Dense-packed cellulose insulation has a higher STC rating than either glass fiber or sprayed foam insulations.

An agent that reduces the surface tension of liquids so that the liquid spreads out, rather than collecting in droplets.

A thermal bridge is a component or series of components (an assembly) in a building envelope through which heat transfers at a substantially greater rate than the surrounding area. Another way to picture a thermal bridge is as a chain of low-R-Value materials that provide a direct path from the exterior of a building to the interior, uninterrupted by any air space or traditional insulating material.

For example, the assembly consisting of interior drywall, the stud that it is in contact with, the sheathing that contacts the stud, and the siding that contacts the sheathing, represents a direct thermal 'bridge' from the exterior to the interior of a structure. Because these materials have substantially lower R-Values, or resistance to heat conduction, than cellulose insulation, they represent a 'faster" or 'more direct' path for heat to exit the building in winter or enter it in summer.

The thermal envelope of a structure consists of the structure's foundation, walls, roof, windows, and doors, considered as a system. The thermal envelope of a structure controls the flow of energy between the interior and exterior of that structure.

Thermal radiation is one of the four ways by which heat moves through a structure. Thermal radiation is electromagnetic radiation emitted from the surface of an object, due to the object's temperature. Infrared radiation from a household radiator or electric heater, or the light emitted from a typical incandescent light bulb, are common examples of thermal radiation. Thermal radiation is one of the four ways heat moves through a structure.

Thermography, relative to assessing the insulation and/or air leakage in a structure, measures surface temperatures through the use of an infrared still camera. These cameras see light, invisible to the naked eye, in the heat spectrum. The images record the temperature variations of the building's surfaces, where white typically indicates warmer regions and black indicates colder areas. These images are useful in determining the need for air sealing and insulation, 'before and after' assessments, distinguishing air leakage from moisture leakage, etc.

An unvented roof assembly is a sealed component of a roof, such as a rafter bay, that has no mechanical means of ventilation, such as soffit vents or ridge vents. It is often seen in the construction of cathedral style ceilings.

Similar to recycling, upcycling is the practice of taking something that is disposable and transforming it into something of greater use and value.

In terms of insulation, any material that prevents the transmission of moisture from one side of a cavity or assembly to another. Vapor barriers are typically required by insulations that do a poor job of managing air infiltration and/or airborne moisture, such as glass fiber batts. Vapor barriers can create their own problems in a structure, especially in the Northeast, as the temperature and vapor drives shift dramatically with the seasons. In effect, a vapor barrier installed in a New England home will effectively be on the 'wrong side' of the cavity for a substantial period in any given year.

In the typical installation, cellulose insulation requires no vapor barrier and, in fact, use of a vapor barrier is not recommended for the vast majority of situations.

The process in which water moves through the pores of building materials, driven by changes in vapor pressure as a result of temperature or moisture concentration.

Ventilation refers to the introduction of fresh air into a structure. A properly air-sealed and insulated building will typically require some form of mechanical ventilation, in compliance with building codes, to assure an adequate supply of air for its occupants and for its mechanical systems, e.g., stoves, fireplaces, dryers, etc.

So just how deep do you want to dig? Some of the following terms are for geeks only, but you can pick and choose.

Glossary

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  1. Figure out how much Greenfiber you’ll need.

    1. First, use this handy-dandy map to determine the R-value recommended for your region. R-value indicates insulating power or thermal resistance (chart below). 
    2. Once you know your target R-value, refer to the Greenfiber Insulation Coverage Chart (on Greenfiber Insulation product bag or see the charts we provide here). This chart will indicate, for a 1,000-square-foot area, how many bags of our insulation you’ll need and how many inches of coverage you’ll need.
    3. To calculate exactly how much insulation you’ll need for a specific number of square feet, you can use the following table provided by the U.S. Department of Energy Insulation Recommendations for Existing Houses.*

    How to Calculate your R-Value with Greenfiber

    International Energy Conservation Code Climate Map

    * These recommendations are cost-effective levels of insulation based on the best available information on local fuel and materials costs and weather conditions. As a result, the levels may differ from current local building codes. Our lawyers want us to add that the apparent fragmentation of the recommendations is an artifact of these data and should not be considered absolute minimum requirements.

  2. Gather all the stuff you’ll need to get the job done.

    You’ll probably have most of it around your house. A couple of helpful tips are to test the blower machine before you leave the store and be sure you have 100 feet of blowing hose.

    So here’s your list:

    1. The right number of bags of insulation for the R-value you need.
    2. A blowing machine and 100 feet of hose. Place the machine outside your home on a level surface or in your garage.
    3. A heavy-duty 12-gauge extension cord.
    4. A tarp to be placed under the blowing machine to catch excess material.
    5. A ladder to get into your attic if needed.
    6. Safety eyewear and N95 NIOSH-approved particulate masks such as a 3M model #8210 or #8511 or equivalent for protection against nuisance dust. 
    7. Adequate lighting in the attic for installation.
    8. A ruler or other measuring device to monitor the depth of insulation.
    9. Soffit vent chutes (if needed).
    10. Soffit baffles.
    11. Metal barrier material for three-inch clearance around recessed lights and other heat sources. Do not use paper, cardboard or other potentially combustible materials as a barrier.
    12. A vehicle to transport the blowing machine, Greenfiber Insulation and other materials. (A pickup truck is all most people need.)
  3. Get ready.

    You’re almost there. Be sure to place the blowing machine on a level surface and plug it into a 20-amp, 110-volt household outlet, and make certain to keep all the insulation away from heat surfaces and recessed light fixtures.

    Now follow these steps:

    1. Identify locations of recessed lights, furnace flues, heating vents, chimneys and other sources of heat or combustion in the attic. Install barriers around heat sources with clearances of at least 3 inches from the heat source. Check your local code requirements for barriers. Heat trapped by any type of insulation can be a fire hazard.
    2. Use baffles or vent chutes to maintain attic ventilation. Insulation should not cover attic soffit vents.
    3. Determine the desired installed thickness of the insulation, and then measure and mark the rafters as a guideline to be used during application.
    4. Prepare a rigid barrier around the attic access hole to prevent insulation from falling out when you open the attic door. The barrier should be as tall as your installed insulation height.
    5. Place the blowing machine on a level surface outside the building or in a garage. (Oh, yeah, you already did that.)
    6. Plug the machine into a 110-volt electrical outlet (20 amps or greater) using the shortest, heavy-duty extension cord possible (minimum 12-gauge).
    7. Attach the hose to the machine. Run the hose from the machine through the attic access hole into the attic, avoiding sharp bends or kinks.
    8. Make the proper airflow adjustment by either opening your machine’s product slide gate 3/4 of the way or, on some machines, closing the air valve to approximately 1/4 inch.
    9. Locate one person in the attic to hold the application hose and the other near the blower to empty insulation bags into the machine hopper outside or in garage.
    10. Consider laying a kneeboard across the ceiling joists to provide a platform for standing or kneeling during installation.
    11. Open a bag of GreenFiber and gradually feed the insulation into the hopper, making sure to break the material down manually by hand to reduce clumps and prevent the blowing hose from getting clogged. Any spilled insulation should only be reused if it is free of debris. Of course, it’s important to keep your hands, feet and clothing away from moving parts inside the hopper.
  4. Do it!

    Okay, you’re ready to get this done. But just a couple more tips: Before you start, use soffit vent baffles to allow the soffit to stay open above the insulation for proper airflow. And after you’ve finished blowing Greenfiber, insulate the inside of the access hole cover with batt or foam board insulation to complete the job.

    Ready, set, go:

    1. Put on safety eyewear and NIOSH-approved dust mask (N95)
    2. Turn on the blowing machine. The product will begin to flow through the hose.
    3. Adjust the product slide gate to wide open or the air setting as needed.
    4. Begin to insulate at the corner farthest from the attic access and work back. Be careful to step on top of and not between the ceiling joists.
    5. Hold the hose approximately 3 feet above the installation surface and distribute the insulation evenly.
    6. Do not block soffits or cover heat sources with insulation unless they are type IC rated for contact with insulation.
    7. Fill to the desired depth, using attic markings and rulers as guides.
    8. Use all the bags required to achieve your desired R-value.
    9. Empty the blowing machine when you’re finished.
    10. Return the machine to the location you rented or borrowed it from.

    Caution: To help avoid fire: Keep insulation at least three inches away from the sides of recessed light fixtures. Do not place insulation over such fixtures so as to trap heat unless they are type IC rated for contact with insulation. Also keep insulation away from exhaust flues of furnaces, water heaters, space heaters or other heat-producing devices. To be sure that insulation is kept away from light fixtures and flues, use a barrier to permanently maintain clearance around these areas. Check with local building or fire officials for guidance on installation and barrier requirements. (US Federal Regulation 16 C.F.R. Part 1404.4).

We know all the ways to make the installation process easy, so here you go.

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We’ve done this a few times.

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That depends on four things: the recommended R-value, your climate, the type of heating and cooling system you have, and the section of the house you plan to insulate. For the recommended levels of insulation, the Department of Energy publishes this map with the R-values they recommend.

zone-chart.jpg#asset:374

A lot of stores will let you use the machine for free with a minimum purchase of Greenfiber. But even if you need to rent the machine, you won’t need it for long and your whole job should still be economical.

It’s made of cellulose, which is a basic part of plants (think wood pulp). Our cellulose insulation consists of up to 85% post-consumer paper fiber. It also contains additives for fire resistance, and some has been treated with boric acid for protection from pest infestation and moisture. What it doesn’t contain is also important: there’s no formaldehyde, asbestos or fibers from textiles, fiberglass or mineral wool in Greenfiber.

Here’s the deal. The more time you have to escape from a fire, the better. And our cellulose insulation can give you extra seconds that fiberglass insulation can’t. Want evidence? A large-scale outdoor fire demonstration, conducted by the Maryland Fire & Rescue Institute, found a structure insulated with cellulose insulation increased a simulated residential building’s structural fire resistance by as much as 57% over a structure with no insulation or one insulated with fiberglass batts. Learn more about the "Big Burn" demo.

We have a long list of additional fire safety credentials: Greenfiber has a Class1 fire rating from E 84 testing and is permitted as a fire block. It’s also manufactured to meet strict Consumer Product Safety Commission (CPSC) fire safety regulations, and all our products meet American Society for Testing and Materials (ASTM) C 739 and E 84 tests. Plus, Greenfiber has a growing list of fire resistance-rated buildings assemblies, of both wall and floor-ceiling type, that are listed in the Certification Directory of Underwriters Laboratories. All our products are classified by UL and carry the UL mark on every bag. Bottom line: you’re safer with Greenfiber than without it or than with any other type of insulation.

Nope.  Accelerated aging tests (CAN/CGSB-51.60 M-90) performed on cellulose insulation have shown that there’s no noticeable degradation over time. In addition, Greenfiber offers a limited lifetime warranty, which includes the permanency of the fire retardant treatment we use, for the life of the structure.

Where air goes, sound follows. Our sound control quality is due to Greenfiber’s density and its ability to fill any cavity since it’s easily blown into voids and gaps that could allow for sound transmission. Greenfiber is especially good at blocking airborne sound from traffic noise, airplanes, radios, televisions and conversation.

Greenfiber Insulation meets or exceeds standard industry tests (ASTM C 739) for corrosion resistance, performed on steel, copper and aluminum.

You bet. Our insulation is ideal for providing additional R-value over existing attic insulation since it completely fills voids and gaps left open by other forms of insulation. It can also be installed in existing uninsulated exterior walls through various methods.

Actually, it’s really easy. No kidding. There’s no lifting heavy rolls up through attic openings. Plus there’s no measuring, cutting or trying to fit stuff into tight nooks and crannies. You’ll just need two people — one to put the insulation in the blowing machine and another to blow the insulation to the desired thickness, which is easily measured by attic rulers. It can also be installed in existing uninsulated exterior walls through various methods such as the two-hole installation method and tube method.

It will settle in attics until it reaches a stable density, as will other types of blown insulation. Coverage charts have already taken this into account, so it’s nothing to worry about. In sidewalls, Greenfiber will not settle when properly installed.

No. And even better, it’s itch free to the touch, and it doesn’t have any glass fiber that can cause irritation when you’re handling it. In compliance with Material Safety Data Sheet standards, Greenfiber produces dust classified as “nuisance,” and you’d probably only notice this dust during installation, if ever. Therefore we recommend using a dust mask and safety glasses while you’re installing Greenfiber.

The more you know about Greenfiber cellulose, the more you’ll agree it’s the best insulation you can use. Here are some of the questions people ask us a lot.

Frequently Asked Questions

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  • Promoting Wellness

    With Greenfiber insulation, we can change the way people live, sleep, relax and feel. Traditionally, insulation was considered a necessary filler, a commodity to be installed in walls and ceilings to regulate temperatures, help save energy and money, and buffer against the outside world. But we know (because we have the data to prove it) that insulation can also be an effective way to bring sanctuary back to a bustling, changing world.

    Promoting Wellness
  • PROTECTING OUR ENVIRONMENT

    It wouldn’t make sense to simply improve the way we live inside, if we weren’t also looking to preserve the environment outside. Greenfiber® cellulose insulation products use 13 times less energy to manufacture than fiberglass insulation⁴, and are made with postconsumer paper fiber and are free from unhealthy substances such as formaldehyde and asbestos. Our commitment to the environment is one more reason people can feel better about their choice of insulation.

    PROTECTING OUR ENVIRONMENT PROTECTING OUR ENVIRONMENT

THE WORLD IS A NOISY,
BUSY, UNBALANCED PLACE.
WE’RE HERE TO HELP.

We believe in a better future.

A safer, more comfortable, quieter future.

We believe in homes that improve health.

That have a positive impact on our environment.

We believe in building relationships.

In trust, reliance and support.

We believe in moving forward.

Challenging the status quo.

Advancing our industry and ourselves.

We believe the world is changing.

And that we all must change with it.

MORE REASONS TO CONSIDER CELLULOSE

  1. Superior Noise Suppression

    Because of its density, cellulose provides superior noise suppression, reducing sound power by up to 60%.1

  2. Works 
Efficiently

    Cellulose is denser and has better resistance to airflow than fiberglass, so it works more efficiently as insulation.

  3. Ease of Use

    Our cellulose is easy to install without any special skills. It can be blown into small, restricted spaces and installed over existing insulation.

  4. Environmentally 
Responsible

    By using recycled materials from local sources, low-energy manufacturing and short-haul transportation, Greenfiber® gives you an environmentally responsible choice with our cellulose insulation.  

  5. Low-Energy Manufacturing

    Greenfiber insulation uses just one-fifth of the energy to manufacture than that used to make competing insulation products.2

  6. Quality & Sophistication

    Cellulose has improved in quality and sophistication over time, and it now provides exceptional resistance to fire and moisture. What other insulation can claim these benefits and also provide the superior thermal and sound insulation that comes naturally to cellulose?

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You won’t get this from other types of insulation.

  • Absorbs sound.

    The density of our cellulose — and the fact that it can fill every gap and void — helps reduce noise from outside.

  • 57% better at resisting fire.²

    Our density and the fact that Greenfiber is treated with fire-retardant additives also provides fire protection for your home, giving you more, critical seconds to escape.

Cellulose is derived from nature. Actually, it’s made from paper (think wood pulp). Recycled paper (like newspaper) is first shredded and then treated with a unique formula to create our cellulose insulation. There’s a lot of paper out there, and we work hard to secure the best sources. If you’ve ever wondered what becomes of recycled paper, now you know.

THE WHAT AND WHY
OF CELLULOSE

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All the support you need, in one place.

We don’t just make it easier to install insulation. We make it easier to sell.

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  • REDUCE SOUND POWER BY 60%

    Where air flows, sound follows. Sanctuary is engineered to fill the tiny joints, crevices and gaps hidden within your attic, walls, floors and ceilings. Highly effective as sound insulation, it serves as a scientifically advanced barrier capable of muffling sounds that typically infiltrate and reverberate through our homes. Proven to reduce the power of sound by up to 60%1, Sanctuary is specifically designed to keep the racket of the outside world out and ensure that our most private spaces remain private.

    REDUCE SOUND POWER BY 60%
  • ADD COMFORT AND SAVE ENERGY

    When used as attic insulation or installed in walls, ceilings and floors, Sanctuary will keep your home cooler in the summer and warmer in the winter. Designed to regulate temperature room by room, when installed in exterior walls, Sanctuary can also reduce heating and cooling costs by up to 25%.²

    ADD COMFORT AND SAVE ENERGY
  • ENJOY PEACE OF MIND

    With a Class 1A fire rating, Sanctuary contains active fire-resistant materials and is 57% better at resisting fire than most other common types of residential insulation. Two to three times denser than fiberglass, Sanctuary qualifies as a fire-blocking material, and in a large-scale fire test, it lasted 60% longer than fiberglass batts³ — making Sanctuary the best choice to protect you and your family.

    ENJOY PEACE OF MIND
  • BE GOOD TO THE ENVIRONMENT

    Sanctuary requires 13 times less energy to manufacture than fiberglass insulation⁴, is made with 85% postconsumer paper material and is free from unhealthy substances such as formaldehyde and asbestos. That should make you breathe easier about your choice to install Sanctuary in your home. Click here to learn why cellulose is the environmentally responsible choice.

    BE GOOD TO THE ENVIRONMENT BE GOOD TO THE ENVIRONMENT
  • INSTALL IT WITH EASE

    Since Sanctuary can be blown-in, it doesn’t require time-consuming cutting and fitting. Plus, it can be blown into small, tight, difficult-to-access spaces, providing far better coverage, and it can be applied directly over existing insulation. Each bag of Sanctuary is easy to handle and break up for loading into Greenfiber blowers. Our blowers can be rented from your local Greenfiber retailer and require no training or special skills to use.

    INSTALL IT WITH EASE

Sanctuary by Greenfiber outperforms other types of insulation in one critical way after another. Plus, it offers advantages you’ve probably never thought about.

NOW WELLNESS CAN
START IN YOUR WALLS

Installed in attics, walls, floors and ceilings, Sanctuary® by Greenfiber® can bring peace, quiet and comfort to your home.

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Explore the latest Greenfiber articles, press releases, news and industry insights.

Speaking of Green

Useful Tools

  • Project Checklist

    Not sure what else you need for your insulation project?

    Download PDF
  • Insulation Calculator

    Here's an easy way to find out how many bags you'll need to get the job done.

  • Find a Retailer

    Find Greenfiber at
 a retailer near you

Some helpful information

How can we help?

It may not be the best topic for small talk, but the more you learn about Greenfiber, the smarter you’ll be about how to use it and all of the reasons you should. Check out the documents, step-by-step instructions, videos and more below.

If you’re looking to expand your business by providing new insulation solutions or to build quiet homes that promote happiness and well-being, you can always count on Greenfiber® to get the job done.

ATTICS. WALLS.
FLOORS. CEILINGS.
WE’VE GOT YOU COVERED.

LOOSE-FILLED OR SPRAY-APPLIED?
Loose-Filled
Loose-Filled Sanctuary loose-fill can also be blown in or dense-packed into walls and floors, and it works great in attics. It can often be installed over existing insulation without removing the old insulation, letting you reach the necessary R-value with no fuss. Depending on your climate zone, it also works well in cathedral ceilings or floor joists of basements.
Spray-Applied
Spray-Applied Sanctuary spray-applied insulation products are optimized for wall spray or open-attic installations. This versatile formula has a dry adhesive, which is activated with a fine water mist during installation, that is designed to enhance performance. Note that this application requires special equipment and is recommended for professional contractor installation only.
  • Greenfiber Sustainability

    Whether for LEED, the National Green Building Standard, or other types of guidelines and standards, GreenFiber Blow-in Insulation has a broad set of characteristics to assist in meeting the demand for higher performing insulating products and assemblies.

    You can read a detailed report about Greenfiber insulation products and LEED projects, and a case study of Greenfiber insulation in a LEED Gold Certified Building.

    Greenfiber Sustainability
  • Energy Savings

    Build a tighter home that is 40% more energy efficientusing our spray applied cellulose and foam insulations that perfectly fill and expand into tight spaces, eliminating gaps where conditioned air can escape. 

    Energy Savings
  • Unmatched Fire Resistance

    Our insulation products include built-in fire resistance to slow the spreading of flames and provide a 1-hour fire wall4. Plus, patented Appendix X approved SES spray foam meets code without additional steps or coatings. 

    Unmatched Fire Resistance
  • Equalized Temperatures

    Ensure tempatures are equalized from room to room and across multiple floors by eliminating “hot spots” found in multi-level homes while extending the life of the HVAC system.

    Equalized Temperatures
  • Block Sound Transmission

    Reduce exterior noise and sound transfer from room-to-room when applying cellulose insulation to interior and exterior walls.

    Block Sound Transmission
  • Install with Ease

    Unlike roll or batt alternatives, Sanctuary is engineered to fill every gap, void and hard-to-reach place without time-consuming cutting and fitting. Sanctuary can be loose-filled, dense-packed or spray-applied into walls, floors, ceilings and attics. Depending on your climate zone, it works well in cathedral ceilings or floor joists in basements. And, Sanctuary can often be installed over existing insulation without removing the old, letting you reach the necessary R-value with little to no fuss.

    Install with Ease
  • Enhance Comfort

    Sanctuary is engineered to fill the tiny joints, crevices and gaps hidden within walls and ceilings, creating a dense, scientifically advanced barrier capable of muffling sounds that typically infiltrate and reverberate through homes. Proven to reduce the power of sound by 60%1, Sanctuary is specifically designed to keep the racket of the outside world out. So as you enhance customers’ comfort by improving exterior wall insulation and helping equalize temperatures throughout their home, you’ll also be elevating their peace and quiet.

    Enhance Comfort
  • PROTECT PEOPLE AND THE ENVIRONMENT

    Sanctuary is made with up to 85% recycled postconsumer paper material that’s free from unhealthy substances such as formaldehyde and asbestos. In addition, when used as attic insulation or installed in walls, ceilings or floors, it can help reduce heating and cooling costs by up to 25%.² Being kinder to pocketbooks and the planet are two things your customers will appreciate long after the job is done.

    PROTECT PEOPLE AND THE ENVIRONMENT PROTECT PEOPLE AND THE ENVIRONMENT
  • Provide Peace of Mind

    With a Class 1A fire rating, Sanctuary contains active fire-resistant materials and is 57% better at resisting fire3 than most other common types of residential insulation. Sanctuary qualifies as a fire-blocking material, and in a large-scale fire test, it lasted 68 minutes, 60% longer than fiberglass batts³ — making Sanctuary the best choice to protect your customers and those they love.

    Provide Peace of Mind
  • Our Promise

    Every bag of Sanctuary cellulose insulation comes with a limited lifetime warranty. Each shipment is tested to ensure the highest standards, and all results are recorded with our quality management system. We also meet UL Classified, Platinum LEED® and Energy Star® certifications.

    Our Promise

We’re excited to offer you a new way to elevate your customers’ home experience, to differentiate yourself from the competition and to build homes that promote happiness and well-being: Sanctuary Homes by Greenfiber.

Two Trusted Brands, Unlimited Options

With our portfolio of Greenfiber® Blow-In Cellulose and SES Spray Foam Insulation products, Custom Comfort Solutions provides air sealing qualities, as well as sound and fire blocking benefits to guarantee energy savings and comfort for the life of the home. Choose from a variety of applications including our all-cellulose, all-foam and hybrid solutions; all guaranteed to provide superior comfort and energy efficiency.

We've Got You Covered

Read more about Custom Comfort Solutions Guarantees

Guarantees are currently available to builders that meet program criteria in select markets

Customers are becoming increasingly selective about the products they introduce into their homes and lives. As the world gets louder, busier and more hectic, they’re more and more focused on wellness, comfort, safety and peace. Working with Sanctuary, you’ll stay ahead of the trend, delivering unparalleled value and comfort to your customers, all while ensuring defect-free installation every time without callbacks.

MORE THAN
INSULATION

Our new Sanctuary® product can be loose-filled, dense-packed or spray-applied so that you are prepared to tackle any job at any time and keep your customers happy long after the job is done.

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The proof is in the performance

  • Energy Savings

    Energy Savings

    Build a tighter home that is 40% more energy efficient using our spray applied cellulose and foam...

  • Fire Resistance

    Fire Resistance

    Greenfiber insulation can slow the spreading of flames and provide a 1-hour fire wall.

  • Controlled Comfort

    Controlled Comfort

    Ensure temperatures are equalized by eliminating “hot spots” found in multi-level homes..

  • Peace & Quiet

    Peace & Quiet

    Block x% of outside sounds and reduce noise transfer from room-to-room.

SANCTUARY IS THE SMARTER WAY

  • Install with Ease

    Sanctuary can be blown in over old, ineffective insulation defect-free without callbacks.

  • Provide Your Customers with Sanctuary

    Sanctuary can reduce sound power by up to 60%.¹ That means a quieter, more peaceful home and happier clients.

  • Better for Your Customers

    With Sanctuary, your customers can save up to 25% in heating and cooling costs.² And satisfied customers will be more likely to recommend you.

See all benefits

The first all-in-one product that can be loose-filled or spray-applied, Sanctuary is engineered with high-grade cellulose for cleaner application and is extremely versatile and easy to use. Using your blower or ours, you’ll get foolproof coverage in seconds and your customers will get insulation that brings greater peace, comfort and safety to their home.

Greenfiber makes jobs go better.

Need a headline for this,

40% more energy efficient with controlled comfort… guaranteed.

Custom Comfort Solutions
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IT’S TIME TO SWITCH
TO SANCTUARY®

Sanctuary by Greenfiber® is the first all-in-one product that can be loose-filled, dense-packed or spray-applied to get the job done quickly.

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We're here to help you get the most from every job.

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  • Why it’s better

    Greenfiber’s not only easier to install in retrofit and new construction environments, but it keeps homes cooler in the summer and warmer in the winter. It’s so effective, it can reduce heating and cooling costs by up to 25%.¹

    Along with energy savings and superior comfort, it also provides exceptional noise control and unmatched fire resistance. Plus, all Greenfiber products are UL Listed and Classified, and we help contractors meet essential certifications.

    Why it’s better
  • Why Greenfiber

    Across the US and Canada, we’re the energy-saving, cost-effective, smart insulation choice. With eight US manufacturing facilities, we can almost always deliver with just a two- to three-day lead time. We also provide competitive programs to reach your customers, and we offer the support you need when you need it. 

    From blended insulation that’s perfect for most attics to specialty products spanning residential and agricultural use, our cellulose will give your customers the best results.

    Why Greenfiber
å Leaf Accent

There’s a long list of reasons contractors and homeowners benefit from using Greenfiber. And our advantages extend to you, too, from the range of our products to our competitive marketing to the support you’ll get from our people. We look forward to increasing your comfort with the industry’s leading cellulose insulation.

INSULATION THAT COMFORTS BOTH BODY AND MIND

  • 60% Reduction in Sound Power¹

    As highly effective sound insulation, Sanctuary is perfect for bringing peace back to bedrooms.

  • Enhance Comfort

    Retrofitting your home with Sanctuary is easy and can help regulate temperatures while saving you money.

  • Greater Peace of Mind

    Sanctuary is 57% better at resisting fire² and gives you and your family more time to react in an emergency.

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SANCTUARY®.
A SIMPLE SOLUTION FOR EVERY HOME.

After years of dedicated research and development, we’re proud to offer the first all-in-one cellulose insulation that can be loose-filled, dense-packed or spray-applied. Sanctuary by Greenfiber is suitable for all climates and conditions, makes project planning easier, and breaks up easily for optimized coverage. Whether you need attic insulation or install it in ceilings, walls or floors, it dramatically affects any home and, better yet, the people who live there.

Learn more about Sanctuary
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SANCTUARY.
A SIMPLE SOLUTION
FOR EVERY HOME.

Sanctuary by Greenfiber is engineered to change the way you live. Whether you install it yourself or choose to have a contractor do it for you, you’ll instantly notice the difference it makes to your home and your life. Regulating temperature and reducing the power of sound, Sanctuary will bring more comfort and serenity to every room.

Learn more about Sanctuary
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SANCTUARY.
BRINGING WELL-BEING TO
HOME AFTER HOME.

After years of dedicated research and development, we’re proud to offer the first all-in-one cellulose insulation that can be loose-filled, dense-packed or spray-applied. Sanctuary by Greenfiber is suitable for all climates and conditions, makes project planning easier and breaks up easily for optimized coverage. Whether used as attic insulation or installed in walls, ceilings or floors, it dramatically affects any home and, better yet, the people who live there.

Learn more about Sanctuary
  • Products

    We’ve refined our offering to make it quick and easy to find the exact cellulose insulation products you’re look for.

  • Support

    You’ll find all the information you need to get the most from Greenfiber right here. 

  • Insulation Calculator

    Here's an easy way to find out how many bags you'll need to get the job done.

Greenfiber® is leading a revolution, a movement to bring peace and comfort back to our most private spaces, to promote well-being and to provide the one thing in this noisy, busy, bustling world we are all struggling to find: Sanctuary.

Imagine a home that restores well-being

Reducing the power of sound and improving the comfort of your home can change the way you sleep, communicate, live, and love.

Illustration

Homeowners

We know you only want to do this once.

That’s me
Audience Identifier Contractor

Contractors

You need to know things will go right.

That’s me
Audience Identifier Image Contractors

Builders & Architects

Build a better home with guaranteed efficiency and controlled comfort

Thats Me

Your home should feel like a sanctuary. A safe space for you and your family to just be. And now it can. With Sanctuary by Greenfiber in your walls, ceilings and floors, you can reduce the power of unwanted sound in your home by up to 60%¹ and regulate temperature room to room, floor to floor. With Sanctuary cellulose insulation comes a greater, lasting sense of well-being. Imagine what that can mean to you and your family.

A better product for your customers.

Greenfiber blow-in cellulose insulation
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Partner with Greenfiber

We're here to help you get the most from every job.

DIAL UP COMFORT
IN YOUR HOME.
AND LIFE.

In a busy, noisy, unbalanced world, Sanctuary® by Greenfiber® delivers so much more than insulation.