skcolo

While I see the benefit of spray insulation, I agree that the code is confusing regarding fire. I think in general an ignition or thermal barrier should be used until a standard means of testing and approval is incorporated into the building code.

In addition, when using a spray foam insulation, the attic ventilation is omitted which brings up the question of a vapor barrier. Spray foam is not a vapor barrier, which means that one must be installed above the drywall between the attic and living space. That is not ideal for the drywall material should condensation accumulate at the vapor barrier. We constantly strive to make houses air tight, which is good for energy consumption, but bad for everything else, including the health of the occupants. www.fixuphouses.com