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What is a TPO roof?
Thursday, August 16, 2018
TPO is an acronym for Thermoplastic PolyOlefin. It is single-ply membrane roof, and in the same category as EPDM (Ethylene Propene Diene Monomer) and PVC (PolyVinyl Chloride). TPO is installed in large, flexible sheets that can be heat-welded at seams. The white surface color qualifies as a “cool” roof material that has low heat absorption, and it also has high resistance to UV damage.
TPO is currently the fastest growing segment of the commercial/industrial roofing market, with about 1.2 billion square feet installed in the U.S. in 2013, according to Firestone Building Products.
Although it is primarily used for large, flat roofs, such as over “big box” retail stores, TPO is also occasionally installed as an alternative to built-up, built-up and gravel, and modified bitumen for flat or low-slope residential roofs. It comes in a “peel and stick” adhesive style or can be mechanically adhered to the roof sheathing. The photo above is a TPO roof of the clubhouse of a retirement community.
To learn about expected lifespan and the factors that affect it, go to our blog post What is the average life expectancy of a TPO (Thermoplastic PolyOlefin) roof? Also, see our blog What is a "cool roof”?
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To learn more about roofs and attics, see these other blog posts:
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