we own a30x28 log cabin and are having a bad time with our roof. camp has 4×6 rafters, tongue and grooves boards, 2 layers of 4×8 insulation, 1’air space, plywood and asphalt shingles. Roof started to show water marks. Took the roof and insulation off. Replaced with closed cell foam insulation ,plywood and new shingles. Two years later our roof looks like a waffle board, bumps and sags all over. Would you have some idea of why I’m having such a hard time with this roof, Thanx JOE
waterloop Changed status to publish April 4, 2024
