Exterior Rigid Polyiso Foam Insulation

Hi! I currently I have a home in zone 3C (Bay Area) which has an old portion with two rooms all under one gable roof line. One of those rooms has… Hi! I currently I have a home in zone 3C (Bay Area) which has an old portion with two rooms all under one gable roof line. One of those rooms has…Read MoreGreenBuildingAdvisor