High Performance, Smooth Surfaced, Reinforced Heat Weldable MB Membrane

The POWERply SBS Base HW (heat weld) base sheet is designed for use in hot air, heat welded (torch applied) multi-ply roof and flashing systems that call for a high strength, bilaminate reinforced membrane.


The POWERply SBS Base HW base sheet is a smooth surfaced modified bitumen membrane that consists of specially selected bitumens, modified with compatible SBS elastomers and reinforced with a composite polyester/fiberglass core. It is furnished with a sanded top surfacing and a burn-off polyethylene sheet laminated on the underside of the membrane. POWERply SBS Base HW is asbestos free and exceeds the requirements of ASTM D 6162, Type III.

Roofing & Weatherproofing Peace of Mind

We deliver peace of mind to building owners and facility managers by managing roofing and building life cycles for customers in all industries, including education, healthcare, government, manufacturing and more.

  • Tremco Roofing offers the industry's most comprehensive roofing and weatherproofing solutions for restoration, repair, maintenance, replacement and new construction.
  • WTI (Weatherproofing Technologies, Inc.) provides roofing services, construction management and general contracting.
  • Our Canam Building Envelope Specialists affiliate provides building envelope solutions to eliminate air leaks, improve energy efficiency and reduce costs.


Phone: 1.800.852.6013

Email: inforoofing@tremcoinc.com