It is standard that each CRATE module has a fully finished independent roof system comprised of a Thermoplastic Polyolefin/(TPO) or PVC60 mil membrane cool roof. Single-ply membrane roofs have traditionally been used on the east coast in the harshest climates and known for their superior performance in both energy efficiency (cool roof technology reflects heat and reduces heat absorption in our more temperate climate) and roof lifecycle costs. The ease of repairs and durability of the membrane extend the life and performance of the roof with little maintenance required. Most of the roofing is installed in factory, with patching material sent to site for connection lines between modules.