I am converting a 35x35 concrete block building into a kiln. I need to frame in pony walls with insulation. I'm going to put a vapour barrier inside the insulation and then top it off with T&G plywood. Will this product work? the humidity and temperature inside the kiln will be very high (like 80% and 180degrees), and we can't afford any water getting into the insulation. Also, I'll have to drive screws throught the vapour barrier into the framing to attach the plywood. Will this affect the vapour barrier? Any help would be great!