Attic leaks are responsible for 25% to 30% of heat loss. Adding more insulation is only a small of the battle, there is still an opportunity to greatly improve your home’s energy efficiency through air sealing. Through the many leaks in an attic, air can leave the house or air can penetrate from outside and can account for a substantial amount of heat loss, as well as lead to ice damming in winter as well as moisture and mold related problems. It is easy to see that Air Sealing is very important!
Our Attic System For New Attics
1. We pinpoint obvious air-leakage and seal them.
2. Blow-in insulation to R-50.
1. Closed cell Spray foam over the entire attic floor to create a COMPLETE air seal.
2. We add blow-in insulation for a total of R50
Our Attic System for Older Attics
1. In a process that provides a clean slate to work with, we first remove all existing insulation with our powerful industrial vacuum.
2. We then add spray foam to create a COMPLETE air seal and vapour barrier.
3. To reach code requirements, we add cellulose blow-in insulation for a total of R50
What About Ventilation?
Venting in new homes isn't an issue, but that's not the case with old houses, which may have no venting at all. In a cold climate, the primary purpose for ventilation is to maintain a cold roof temperature to avoid ice dams created by warm air leakage, and to vent any moisture that moves from the living space to the attic causing frost on the roof deck. By adding a seamless blanket of spray foam to the attic floor, we create a seamless air seal, vapour barrier and a complete separation of the conditioned living space and the unconditioned attic thus minimizing the reason to vent.