Roofing insulation and avoiding moisture build-up — a vexing issue

We live in a 1930s home in the Bay Area, California (climate zone 3C) and need a new roof. The roof is mostly flat, with two smaller peaked sections. There’s… We live in a 1930s home in the Bay Area, California (climate zone 3C) and need a new roof. The roof is mostly flat, with two smaller peaked sections. There’s…Read MoreGreenBuildingAdvisor