Double bubble insulation consists of two layers of polyethylene bubbles between two metalized coatings, effectively preventing frost and condensation in various structures.
Modern cellulose insulation is made from 75 to 85 percent recycled paper or denim, treated with boric acid, borax, or ammonium sulfate.
Insulation works by slowing conductive and convective heat flow, while radiant barriers and reflective insulation reduce radiant heat gain through reflective surfaces in contact with air spaces.