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Products Where to Buy Support
About Us Blog Contact Us
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About Us Blog Contact Us
Homeowners Contractors Builders & Architects
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Products Where to Buy Support
About Us Blog Contact Us
Homeowners Contractors Builders & Architects
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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.
 * Find out more


HOMEOWNERS


REDUCE SOUND POWER BY 60%¹ AND BRING MORE PEACE, QUIET AND COMFORT TO YOUR LIFE.

That’s me


CONTRACTORS


USE THE FIRST ALL-IN-ONE CELLULOSE INSULATION PRODUCT THAT CAN BE LOOSE-FILLED
OR SPRAY-APPLIED.

That’s me


BUILDERS & ARCHITECTS


BUILD QUIET, COMFORTABLE, SAFE HOMES THAT PROMOTE WELL-BEING AND GIVE YOU A
COMPETITIVE EDGE.

That’s me

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.

 * 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.
   
   

Sanctuary insulation fills gaps and voids, reducing sound power by 60%¹ when
dense-packed or spray-applied into exterior walls; bringing peace and quiet to
all rooms in the house.
Find out more
Sanctuary insulation is engineered to exceed all fire requirements and is proven
to last 60% longer than alternative insulation products² – giving you greater
protection and peace of mind.
Find out more
Sanctuary insulation can be easily installed over existing insulation to improve
the comfort of your home while reducing heating and cooling costs by up to 25%.³
Find out more

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


THE LATEST FROM GREENFIBER

View all articles
 * 08.14.23 Soundproofing Attics, Walls & Ceilings with Cellulose Insulation
   
   With the right insulation material, you can significantly reduce the level of
   noise that travels through walls, attics and ceilings.

 * 08.07.23 5 Things to Consider When Updating Your Home Insulation
   
   Five thought-starters to get you on the path to updating your home insulation
   with a SANCTUARY® Trusted Installer.

 * News / 05.12.23 Ball State University Wins 2023 Solar Decathlon Using
   Greenfiber Insulation
   
   Adding cellulose insulation to the design plans of this Indianapolis net-zero
   home helped score a victory for students competing in Solar Decathlon 2023.

“More and more, customers are striving for experiences. We feel that, through
the use of superior building materials and the appropriate practices, we can
create sanctuaries at home, allowing people to tune out the noise that they live
with on a daily basis and spend more time together.”

–Chris Little, CEO, eleV8 Builders

1 In field testing on identical 2x4 exterior wall types, Greenfiber® R-13
Stabilized Spray-Applied Insulation outperforms R-15 unfaced fiberglass batts by
4 NIC raring points, which equates to a 60% reduction in sound power. The weak
point in the assembly such as flanking through windows and doors will diminish
the value of the reduction in sound power. Reduction in sound power is achieved
through retrofitting, dense-packing or spray applying Greenfiber into exterior
walls (contractor installation is recommended for these applications). See
manufacturer’s installation guide for full details on how to install to meet
specifications.


2 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.


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




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 * https://www.greenfiber.com/