Single-Ply PVC, TPO & EPDM Membrane Roofing Systems
Polyvinyl chloride (PVC) is made from two basic components: natural gas or oil and salt. The fuel is converted to ethylene, and chlorine is retrieved from rock salt, one of the most abundant elements on earth. These are joined to produce a white compound known as vinyl chloride monomer, then processed further to produce rigid or flexible PVC.
PVC is used extensively across a broad range of industrial and everyday applications and is one of the most widely used polymers in the world.
Since 1978, Duro-Last has been the world leader in producing custom prefabricated single-ply PVC commercial roofing systems. All flashing components for this system are custom prefabricated to fit every detail on your building under controlled factory conditions.
Prefabrication eliminates up to 85% of the on site labor normally required to field assemble the roofing system, eliminating leaks, improving project quality and saving labor dollars.
All components and seams are hot air welded in the field either by hand or with robot welders to provide a monolithic, durable and watertight assembly.
Thermoplastic Polyolefin (TPO) roofing membranes were introduced in Europe in the 1980s and have been used in the US since the early 1990s. In the thermoplastic roofing systems category, TPOs are the fastest-growing segment of the commercial roofing market.
Although TPOs have been available here for almost 30 years, they are relatively new, compared with more established single-ply membranes, such as EPDM and PVC.
TPO’s advantages include hot-air welded seams, a set of varying colors and thicknesses as well as reinforced membranes with strong abrasion, tear and puncture resistance.
Both Elevate and GAF TPO systems provide energy savings due to its heat reflective properties. EPDM rubber roofing has a long history and is applicable in a variety of flat-roof situations.
TPO seams and flashing details are welded on site by the Sentry Roofing team using hand and robot hot-air welders, an industry proven method that eliminates the need for adhesives or open flame torches.
Once installed, Elevate TPO roofing systems create a watertight, monolithic roof membrane with superior strength and performance. EPDM seams are sealed with adhesive tape and lap sealant.
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