Ethyline Propolyne Diene Terpolymer (EPDM) is a dimensionally stable membrane that can withstand and resist almost any type of nature-born stress. This single-ply roof membrane, also commonly referred to as a rubber roof system, utilizes carbon black as its the molecular "backbone" which enables it to take on characteristics such as the ability to expand up to 300% yet retain 100% structural memory. EPDM also has excellent weathering resistance and serves as a superb second generation (roof-over) application.
EPDM roof systems are typically installed in one of three methods:
Mechanically attached - This application provides a lightweight, cost-effective solution whereby the roof membrane is affixed to the structural deck utilizing mechanical anchors.
Fully adhered - The system is applied by bonding the membrane directly to the affixed insulation board or other roofing membrane substrate.
Ballasted - Using large sheets and 10 to 12 pounds of rock ballast to hold the membrane in place, this roof system can be the most cost-effective due to the ease and speed of installation. However, this application does require a structural engineer's approval.
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