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Thermoplastic polyolefin (TPO) is the fastest-growing segment of the commercial roofing industry, and Carlisle is the leading supplier of this type of roofing material. Carlisle’s white and tan Sure-Weld® TPO membranes are ENERGY STAR®-qualified and Cool Roof Rating Council (CRRC)-certified, and have been directly attributed to a reduction in energy use and cooling costs for buildings in warm, southern climates.

Carlisle’s Sure-Weld TPO reinforced membrane is a premium, heat-weldable, single-ply thermoplastic polyolefin (TPO) sheet designed for new  roof construction and re-roofing applications. Sure-Weld Slope (HS) is formulated with additional flame retardant for higher-slope fire code approvals. Sure-Weld EXTRA is 80 mils thick for significantly higher strength and weatherability.

Sure-Weld TPO membranes use advanced polymerization technology that combines the flexibility of ethylene-propylene (EP) rubber with the heat weldability of polypropylene. All Sure-Weld TPO membranes include OctaGuard XT™, an industry-leading, state-of-the-art weathering package. OctaGuard XT technology enables Sure-Weld TPO to withstand the extreme weatherability testing that is intended to simulate exposure to severe climates.

Physical properties of the membrane are enhanced by a strong polyester fabric that is encapsulated between the TPO-based top and bottom plies. The combination of the fabric and TPO plies provides high breaking and tearing strength, as well as excellent puncture resistance. The relatively smooth surface of the membrane produces a total surface fusion weld that results in a consistent, watertight, monolithic roof assembly. The membrane is environmentally friendly and safe to install.

Carlisle’s standard and HS TPO membranes are available in highly reflective white, tan, and gray, in both 45-mil and 60-mil thicknesses. 80-mil 

Sure-Weld EXTRA (including HS) is also offered in white, gray, and tan colors.

Special color Sure-Weld TPO membranes are also available

(see Carlisle’s TPO Color Palette brochure). Carlisle’s TPO is offered in  4-, and 6-ft perimeter sheets and 8-, 10-, and 12-ft Sure-Weld field sheets. Sure-Weld HS and special color TPO membranes are available in limited sizes.

Features and Benefits:

  • Outstanding puncture resistance

  • Excellent fire resistant assemblies

  • Environmentally friendly and stable formulation

  • Excellent resistance to impact and low temperatures

  • Excellent chemical resistance to acids, bases and restaurant exhaust emissions

  • UL 2218 Class 4 hail rating

  • Exceptional resistance to heat, solar UV, ozone and oxidation

  • Manufactured using a hot-melt extrusion process for complete scrim     encapsulation

  • 100 % recyclable (see Carlisle’s Recyclability Statement )

  • Enhanced with the OctaGuard XT weathering package

  • APEEL Protective Film application guards the TPO membrane’s surface from scuffs and dirt accumulation during installation, improving the roof system’s appearance and long-term performance

  • APEEL Protective Film can be left in place for up to 90 days without degrading due to its excellent heat- and UV-resistance

Technical Data Sheet