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The Advantage of TPO and PVC Roofing Systems: The bottom line is there's a lot for contractors to like about thermoplastic membranes. Installation advantages include strong, heat-weldable seams, good fire resistance
, and labor-saving eight
, 10 and 12 foot wide sheets
available in a variety of light, energy-saving colors
. What's more, roofing manufacturers committed to the thermoplastic roofing market are focusing their considerable resources to add to or improve their existing lines of heat-weldable membranes.
More than anything, thermoplastics membranes are pardon the pun - very flexible. They can be mechanically attached, fully adhered, ballasted, mopped down in hot asphalt (fleece-backed only), or installed as part of a protected membrane roof.
The growth of thermoplastic membranes, and particularly TPOs (thermoplastic polyolefins), has been helped by their popularity in the "big box" new construction market for clients like Home Depot, Wal-Mart and Lowes. But thermoplastics aren't just appropriate for large, wide-open roof spaces. In contrast, these heat-weldable systems have been used on some of the most challenging roofing projects.
Nevertheless, thermoplastic roofing systems have become a favorite of many roofing contractors. They have also become the roofing system of choice on many high-profile projects and for difficult applications where their installation flexibility has overcome a variety of roofing challenges.