Spray Foam as an Air Sealant
Air leaks can waste energy and drive up utility bills. Spray foam can be used to fill gaps and stop the leaks in many areas of a home or building. Some common spots for air leaks that can be sealed with spray foam include:
- Behind knee walls
- Attic hatches
- Wiring holes
- Plumbing vents
- Open soffits
- Recessed light, furnace flue or duct chaseways
Basement rim joists, windows and doors
“Cool roofs” are roofs designed to maintain a lower temperature than traditional roofs.6 They are light in color and reflect sunlight instead of absorbing it, which allows heat to escape. SPF applied to the roof of a home or building can provide cool roof performance when topped with a protective, reflective coating. Along with reducing air conditioning needs, spray foam helps protects the roof, potentially extending its lifetime.
Spray foam roofs also reduce thermal shorts or bridges. Traditional roofing materials must be nailed down or fastened to the roof deck with metal fastenings, creating a thermal short or bridge from the conditioned building interior to the outside roof deck, which can reach temperatures of up to 180 degrees in the summer. Spray foam roofing does not require metal fastening since the foam bonds directly to the roof deck in a continuous layer of insulation.
When having SPF insulation installed in your home or building, work with a professional contractor who can educate you on the installation process.