TPO is a white, heat-welded membrane that reflects sunlight and lowers cooling costs, while EPDM is a durable black or white rubber membrane with a long track record in cold climates. Both typically last 20 to 30 years in New Jersey. TPO is usually the better choice for buildings with high cooling loads, and EPDM for roofs that see heavy freeze and thaw cycles or need simple repairs.
What is TPO roofing?
Thermoplastic polyolefin, or TPO, is a single-ply membrane whose seams are welded together with hot air. The welded seams become one continuous sheet, and the bright white surface can lower roof surface temperatures dramatically in summer.
What is EPDM roofing?
EPDM is a synthetic rubber membrane that has protected commercial roofs for more than 50 years. It stays flexible in cold weather, resists hail and is easy to patch.
How do TPO and EPDM compare?
Lifespan: TPO 20 to 30 years, EPDM 25 to 30 years
Energy efficiency: TPO reflects more heat, while black EPDM absorbs heat, which can help in winter
Seams: TPO seams are heat welded, EPDM seams are taped or glued
Repairs: both are straightforward to repair when problems are caught early
Cost: similar installed prices, with TPO often slightly lower on large roofs
What about roof coatings?
If your existing flat roof is dry and structurally sound, a silicone or acrylic coating can add 10 to 15 years of life for a fraction of the cost of a tear-off. A moisture survey tells us whether your roof qualifies.
How do you choose?
We look at your building's use, insulation, drainage, foot traffic and budget before recommending a system. Explore our commercial roofing services or book a free roof assessment.
Questions about your own roof?
Our team gives free, honest advice. No pressure, ever.
