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. 1.5″ of closed-cell foam or 5 inches of open cell foam constitute such a barrier.
Commonly in retrofit application the foam is installed from underneath the… Continue
Posted on December 8, 2009 at 8:02pm — 1 Comment