Basics Spray foam insulation is a polyurethane foam that is sprayed onto a surface such as wood, metal or fiberglass as insulation. It is used in homes, commercial buildings, boats and just about anything that needs insulation and a tight, well-sealed air barrier. It begins as two parts: part A, the catalyst, and part B, the proprietary ingredient that makes each manufactures brand of foam unique. Each part is pumped through a hose to a gun-like spray head or nozzle. At the nozzle, parts A and B combine and are blown out onto whatever surface is being insulated. At this point, it is thin and wet, but it sticks like fly paper and rapidly expands to about 100 times its original volume. Benefits Compared to fiberglass batt insulation, spray foam can save you up to 50 percent on your heating and cooling costs. Because it sticks so well and expands to fill voids, spray foam creates an airtight seal. That means that inside your home, it not only insulates against outside air temperatures, but it also keeps out drafts, pollen and insects that have a way of creeping through gaps and cracks. Spray foam also reduces moisture and the mold that can come along with it. Read more: ehow/how-does_5076977_spray-foam-insulation-system-works.html#ixzz2qfj6cGPZ
Posted on: Fri, 17 Jan 2014 15:59:31 +0000
Trending Topics
Recently Viewed Topics
© 2015