Materials / PVC Membrane
PVC Membrane
single-plyA single-ply thermoplastic polyvinyl chloride membrane with hot-air-welded seams for low-slope roofs. Distinguished from TPO by its plasticizer chemistry and strong resistance to chemicals, grease, and fire.
Category family
single-ply
Typical lifespan
20–30 years
Typical wind resistance
FM-rated assemblies to 90-150 mph depending on attachment
Typical fire rating
Class A
Weight per square
30–50 lbs
Cost band
$$$
Slope suitability
low
Typical warranty
20–30 years
Pros
- excellent chemical and grease resistance
- reflective cool-roof surface
- strong welded seams
- good fire performance
Cons
- higher cost than TPO
- plasticizers can migrate as the membrane ages
- repairs need compatible PVC
Manufacturers
Named products
Related guides
Sources
- spri.org verified 2026-07-12