Post Number: 1
|Posted on Sunday, August 21, 2016 - 10:28 am: ||
I have a home built in 1939 with a slate roof. The attic is not conditioned and has sufficient insulation in attic floor between the joists. There is also what looks like radiant foil insulation tacked up between the roof rafters onto the bottom of the boards that support the slate roof tiles. The radiant foil insulation is very thin like aluminum foil. My question is ... is this radiant foil insulation helpful or harmful to my roof? I don't see any damage but have always been told that ventilation is critical for a slate roof that this foil seems to be limiting the amount of ventilation that can occur.