Single-Ply

Single-Ply roofing systems are composed of insulation, a single ply membrane, flashings, and adhesive.  TPO, EPDM, and PVC the three most common types of single-ply membrane systems.  Since they consist only of a single layer of roofing over insulation, these popular systems are lightweight, making them an ideal choice for retrofits.

TPO Roofing Systems (ThermoPlastic Olefin) combine the long-term durability rubber provides with the security of hot air welded seams. TPO’s advantages include:

• TPO roofing systems are the most environmentally friendly of the single-ply systems.
• They produce no dioxins or chlorine.
• Membranes come in varying thicknesses to meet your specific requirements and are available in varying roll widths.

EPDM (Ethlyene Propylene Diene Terpolymer) is a stable roofing alternative that withstands extremes of temperature and expands and contracts with the building.

• EPDM systems require minimal maintenance and are resistant to UV radiation and ozone.
• EDPM technology has proven effective for more than 30 years.

PVC Roofing Systems are among the easiest single-ply roofing membranes to install and heat-weld together.  Among the advantages PVC systems provide:

• These systems are able to resist various chemical effluents.
• They provide superior resistance to punctures and tears.
• PVC systems are especially suited for roofs that are exposed to concentrations of grease, oils and many kinds of fuels.
• In areas where acid rain or other forms of acidic outflow is a problem, PVC roofs are the preferred solution.

See single-ply installations.