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This is a 40 sq ft roll of double bubble foil radiant barrier, 4 ft by 10 ft, with two layers of air bubbles between reflective aluminum and white film. It reflects about 97% of radiant heat and carries a Class 1/Class A fire rating from ASTM E84 testing. It is aimed at attics, garages, sheds and crawl spaces where you want a lightweight barrier you can staple or glue up without fiberglass. Against foil-only rolls it adds bubble layers for a small conductive and convective gain; against foam board it is thinner and more flexible but has less bulk R-value.
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Owners of this type of double bubble foil generally report quick, clean installs and a noticeable drop in attic heat. The common complaints are thin material and the need to seal seams well.
This double bubble reflective insulation is a radiant barrier made of two layers of polyethylene air bubbles bonded between two layers of highly reflective metalized aluminum/white polyester film. It is lightweight and durable, and it holds staples without tearing. It does not compress, collapse or disintegrate.
The material reflects 97% of radiant heat and emits less than 3%. It is a Class 1 / Class A fire rated radiant barrier that has passed the ASTM E84 and ASTM E2599 tests. It is meant to reduce stress on heating and cooling systems, keeping a home warmer in winter and cooler in summer.
It is non-toxic, non-carcinogenic and fiber-free. It can be handled and installed without protective clothing or respirators. Cut it with a utility knife or scissors, then staple, nail or glue it into place. It is not affected by moisture or humidity, inhibits condensation, and does not promote fungi, mold or mildew. It does not promote nesting of insects or rodents.
