About Polyolefin (TPO) Roofing
Polyolefin (TPO) single ply membranes were created in the early 1990’s are constructed from ethylene propylene rubber. They are designed to combine the durability of EPDM Rubber with the proven performance of heat welded seams. TPO Roof systems continue to grow in popularity in the United States.
TPO can be installed in three ways; loose laid, fully adhered, and mechanically attached. The loose laid installation requires ballast such as river rock or pavers to hold the membrane in place. Fully adhered is a method where the membrane is completely glued in place using commercial grade adhesives rolled on both the backside of the membrane and the substrate. Mechanical attachment utilizes screws and plates to hold the membrane in place. The fully adhered method is recommended because it prevents water migration under the membrane in case of a membrane puncture.