Specifications include, but are not limited to: 1. For flat roof sections - Remove existing built-up roofing membrane, flashings, insulation and all other roofing accessories down to the surface of existing gypsum, wood or steel deck. Install base sheet, polyisocyanurate insulation, cover board, asphalt & fiberglass felt built-up roofing membrane, cap sheet w/reflective roofing granules and associated flashings. 2. At low-sloped roof sections - Remove existing built-up roofing membrane, flashings, insulation and all other roofing accessories down to the surface of existing steel deck. Install polyisocyanurate insulation, cover board, asphalt & fiberglass felt built-up roofing membrane, cap sheet w/reflective roofing granules and associated flashings.