Single-Ply Systems
PVC & EPDM Roofing
Chemical resistance. Temperature resilience. Proven over decades. Two systems engineered for specific commercial demands.
PVC Roofing
Chemical Resistance Built In
PVC (Polyvinyl Chloride) is a heat-welded single-ply membrane with one distinct advantage over other systems: superior resistance to oils, greases, chemicals, and biological contaminants. It's the preferred choice for restaurants, industrial plants, and any facility with chemical exhaust at roof level.
PVC membranes are reinforced with polyester scrim for dimensional stability and welded with hot air, creating seams that test stronger than the base membrane. The plasticizers used in PVC can migrate over time, but premium-grade PVC with PVDF-modified formulas significantly extends service life.
PVC Quick Specs
EPDM Quick Specs
EPDM Roofing
50 Years of Proven Performance
EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber membrane with the longest commercial roofing track record of any single-ply system: over five decades. It's been tested in every climate, on buildings of every type, and continues to be a reliable, cost-effective option.
EPDM's outstanding flexibility and elongation (300%+) allow it to accommodate building movement and thermal cycling without cracking. It performs well in temperature extremes and is naturally resistant to UV and ozone without special coatings or additives.
The traditional limitation of EPDM is its seam system: adhesive seams require precision installation and periodic maintenance. Modern tape-applied seam systems have improved reliability significantly, and Seal Top follows manufacturer installation standards on every application.
PVC vs. EPDM: Side-by-Side
| Attribute | PVC | EPDM |
|---|---|---|
| Chemical Resistance | Excellent | Fair |
| Seam Strength | Heat-welded (superior) | Adhesive/tape (good) |
| Energy Efficiency | White reflective | Black (limited) |
| Temperature Range | -40°F to 250°F | -40°F to 300°F |
| Flexibility | Good | Excellent |
| Cost vs. TPO | Premium | Economy |
| Longevity | 20–30 yr | 15–25 yr |
| Best Climate | Southeast (hot) | All climates |
| Best Use | Restaurants, industrial | Large flat roofs, budget-sensitive |
PVC or EPDM: We'll Help You Choose
Our team will assess your building and recommend the right system based on your requirements, not just price.
7am – 7pm | Mon–Sun | 24/7 Emergency Response Available