Three Membranes. Honest Recommendations.

TPO, EPDM, PVC — What Each One Actually Is

TPO (thermoplastic polyolefin) is the most common new install — bright white, good UV reflectance, heat-welded seams, typical service life 20 to 25 years. EPDM (rubber) is the workhorse — black, mechanically fastened or fully adhered, longest service life of the three at 30+ years, but less reflective so attic and roof temps run higher. PVC is the premium option — chemical-resistant, hot-air-welded like TPO, good for restaurants and any building with grease exposure, 20 to 30 year service life. Modified bitumen is the older system you'll find on buildings from the 80s and 90s — torch-applied or self-adhered, 15 to 20 year service life, often the failure mode is just age.

We don't push one as "the answer." The right system depends on the building's slope, drainage, sun exposure, rooftop unit count, and your timeline. If a full system replacement is on the table, we walk you through which membrane fits before you sign anything.

Five Things That Actually Go Wrong On Flat Roofs

Flat roof failures show up in five places. Seams, where adjacent membrane sheets meet — wrinkles, lifting, loss of weld integrity. Penetrations and flashings, where the membrane meets pipes, drains, and parapet walls — sealant degrades, flashings pull away, water finds the gap. Drains and scuppers, when leaves and debris back up water on the roof — ponding accelerates membrane wear. Membrane embrittlement, where the system has reached end-of-life and the membrane itself loses flexibility — usually shows as cracking or chalk dusting. And mechanical damage, where rooftop foot traffic, HVAC service work, or storm debris punctures the system — often patched temporarily and forgotten. If you have an active leak, we trace it to the source — it's usually one of these five and the fix depends on which.

When To Patch, When To Coat, When To Tear Off

Flat-roof decisions break into four real options. Patch and move on — for localized failures (a punctured area, a single failed seam) on a system with 5+ years of service life remaining. Fluid-applied coating — when the membrane is structurally sound but losing reflectance and showing wear; coatings extend useful life 10 to 15 years and cost 30 to 50 percent of full replacement. Recover (install a new layer over the existing) — for roofs where the deck and insulation are sound but the membrane is past it; allowed by NJ code for one recover layer over the original. Full tear-off — when the deck is wet, the insulation is saturated, or you've already had one recover. The honest call requires a real moisture survey, not a roof walk.

Building owners often inherit roofs that have been patched repeatedly, sometimes with three different membrane systems on top of each other. An annual maintenance contract catches problems before they force a replacement, and storm damage on flat roofs often runs through commercial property insurance.

How Flat-Roof Warranties Actually Work

Flat-roof warranties are the strongest in the roofing industry — when properly installed and registered. Membrane manufacturers offer system warranties from 15 to 30 years depending on the membrane and thickness, and many include labor coverage for the first 5 to 10 years if installed by a certified contractor. We register every system in the building owner's name on completion day. Our workmanship warranty is 1 year on repairs and 2 years on full membrane installs, transferable on building sale. The catch: nearly all manufacturer warranties require documented annual inspections to remain in force, which is why we offer commercial maintenance contracts that include the inspection paperwork. Skip the inspection in year three and the warranty quietly stops covering you.