TPA Single Ply System:

TPA Single Ply System

A Thermoplastic, Tri-Polymer Alloy Single Ply Roof Membrane System

The elastomeric TPA Roof Membrane can be used in a variety of single ply roof system configurations, such as mechanically attached, adhered and ballasted, as well as in situations where other roof systems are not practical due to weight or slope considerations.  Used in a multi-ply configuration, it is an excellent choice for vegetated roofing systems both for waterproofing and as a root barrier.

The TPA Roof Membrane provides excellent resistance to fire exposure in a variety of roof system configurations, and accepts roof movement and thermal shock well.  It resists a wide range of harmful pollutants, such as acid rain, falling jet fuel, and other minor industrial pollutants as well as exposure to oil, grease, dirt, and the detergents used to remove these contaminants.

The white TPA Single Ply Roof Membrane meets the ENERGY STAR Roof Products Program guidelines for energy efficiency as well as the requirements of California's Title 24 Energy Efficiency Standards for Residential and Non-Residential Buildings and has been tested per the standards of the Cool Roof Rating Council.


The asbestos-free TPA Roof Membrane is a white thermoplastic single ply roof membrane composed of an elastomeric tri-polymer alloy based on Elvaloy, and blended with CPE and PVC.  The TPA Roof Membrane is reinforced with a high strength, wick resistant polyester fabric.  This product contains a minimum 25% by weight of pre-consumer recycled content, which is blended into the black compound located below the reinforcing fabric.  In addition, the TPA Roof Membrane meets and exceeds the performance requirements of ASTM D 4434/D4434M-09, Type IV.

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