TPO

With the abundance of flat roofs, generally considered those roofs that have pitches of 3 inches in 12 or less, builders and roofers must decide between various systems when constructing. While several types of flat roofs exist, the predominantly used materials are thermoplastic polyolefin (TPO) . TPO is mechanically attached, using screws, or fully-adhered with glue. Additionally, the seams are heat welded with a specialized tool.