The growth in TPO membrane use in the U.S. roofing market has
been significant—especially during the past six years to
eight years. Although the use of polyethylene-based polyolefin
membranes has been widespread in the waterproofing and lining
industries throughout the world for many years, TPO membrane usage
in the roofing industry is a relatively new phenomenon. According
to NRCA's 2001-02 market survey, TPO membranes had an 11.6 percent
market share of low-slope roofing sales in 2001.
Despite their rapid growth and acceptance, TPOs continue to be
the subject of much discussion and conjecture in the roofing
industry. The challenge mainly seems to be defining and
characterizing reliable performance characteristics and appropriate
uses of TPOs in the U.S. roofing market, especially with regard to
material standardization and long-term field performance.
Log in or register for FREE access to this article and other Professional Roofing online content.