Single-Ply roof systems have outstanding UV-ray resistance and extraordinary resistance to weather elements. Their white reflective and 'cool roof' characteristics help reduce a building’s energy costs. The reduction in the surface temperature of the roof reduces the amount of expansion and contraction of the roof deck. Single-ply membranes also provide the ability to cover very large areas more economically.

Single-ply roof systems are based on several types of products; generally TPO (thermoplastic polyolefin), PVC (polyvinyl chloride) and EPDM (ethylene propylene diene M-class rubber). These are membrane products that are factory fabricated and installed in the field as a single layer. Single ply roofing systems can be loose-laid (ballasted), adhered, or mechanically attached to the roof deck. The seams of these systems are either hot-air welded or chemically bonded at the seams. Single-ply roofing systems offer ease of installation, lighter material weight, and a lower relative labor cost on larger projects. The membranes used have outstanding longevity characteristics and come with some of the longer manufacturer warranties in the roofing industry.