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Indoor air is typically 4-5x more polluted than outdoor air
A typical duct system leaks 35% to the outdoors
Homes produce more C02 emissions than autos and light trucks combined
25% reduction in U.S. home energy consumption = taking 1/2 of all passenger cars off the road

Spray Foam Insulation on Open Roof

Submitted by main on Fri, 10/30/2009 - 06:53

Many people are interested in insulating vaulted or cathedral ceiling. In this type of structure there is no attic in which to spray insulation. According to the building code, in order to insulate underneath the roof deck you must install an air-impermeable barrier. Spray Foam (closed-cell) on Open Roof

Commonly in retrofit application the foam is installed from underneath the roof deck. We just completed an application in Piedmont, California where the general contractor tore off the existing roof and built up a 2x4 frame into which we could apply foam. This allowed us to install 3.5 inches of spray foam for a total R-value of R-21 from on top of the vaulted roof. The spray foam works extremely well old and reducing heat loss during the winter and heat gain during the summer.

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