Membrane Roofing Services

Flat and Low-Slope Roofing for Utah

Not every roof has a steep pitch. Commercial buildings, home additions, covered patios, modern architectural homes, and plenty of older residential properties across the Wasatch Front have flat or low-slope sections that need a completely different roofing approach than traditional shingles. That’s where membrane roofing comes in.

Membrane roofing systems use large sheets of synthetic material that create a continuous, watertight surface across your flat roof. Unlike shingles, which rely on gravity and overlap to shed water, membrane roofs are designed to handle water sitting on the surface — because on a flat or low-slope roof, that’s exactly what happens, especially during Utah’s spring snowmelt when your roof might have inches of standing water for days at a time.

Cardinal Roofing installs and repairs all three major membrane roofing systems: TPO, EPDM, and PVC. We’ve been working on flat roofs across Salt Lake, Provo, Park City, and everywhere in between with over two decades of combined experience, and we know which systems perform best under Utah’s specific combination of intense UV radiation, extreme temperature swings, heavy snow loads, and rapid freeze-thaw cycling. This isn’t a market where you can install any flat roof system and expect it to last. The wrong choice fails fast here.

Membrane Types: Which One Is Right for Utah?

We install all three major membrane systems. Here’s how they compare in Utah’s demanding climate.

TPO (Thermoplastic Polyolefin)

TPO is the most popular flat roofing material in Utah right now, and for good reason. It handles UV exposure extremely well, which matters a lot at Utah’s elevation where UV intensity is significantly higher than at sea level. TPO comes in white, which reflects sunlight and keeps your building cooler in summer — a real benefit along the Wasatch Front where summer temperatures regularly hit the mid-90s. The seams are heat-welded, creating a bond that’s actually stronger than the membrane itself. TPO lasts 20-30 years with proper installation and handles Utah’s temperature swings from sub-zero winter nights to 100-degree summer days without cracking or splitting.

Best for: Commercial buildings, new construction, and any flat roof where UV resistance and energy efficiency are priorities. This is our most-recommended membrane system for Utah.

EPDM (Ethylene Propylene Diene Monomer)

EPDM is the classic flat roof material — the black rubber membrane you’ve probably seen on commercial buildings. It’s been around for decades and has a proven track record. EPDM is extremely durable, flexible even in cold weather, and easy to repair. The flexibility is a big advantage in Utah because the membrane can expand and contract with our extreme temperature changes without tearing. It’s also the most affordable membrane option for most applications.

The downside in Utah? That black color absorbs heat and UV, which means it degrades faster than white TPO under our intense sun. It still lasts 20–30 years, but it doesn’t reflect heat the way TPO does, so your cooling costs will be higher. The seams are adhesive-bonded rather than heat-welded, which makes them the weakest point of an EPDM system.

Best for: Budget-conscious projects, residential flat sections where cost is the primary concern, and buildings where the roof isn’t visible (since the black color isn’t always aesthetically ideal).

PVC (Polyvinyl Chloride)

PVC is the premium membrane option. It has the best chemical resistance (important for commercial kitchens and restaurants where rooftop grease exhaust can damage other membrane types), outstanding UV resistance, and excellent fire ratings. Like TPO, the seams are heat-welded for maximum strength. PVC membranes have been in use for over 50 years in Europe, and we’ve seen PVC roofs in Utah that are 25+ years old and still going strong.

The tradeoff is cost — PVC is the most expensive membrane option. But for applications where chemical resistance matters, or where you want the absolute longest-lasting flat roof system, PVC is the way to go.

Best for: Restaurants, commercial kitchens, buildings with rooftop equipment, and anywhere chemical resistance or maximum longevity is the priority.

Our Flat Roof Inspection Process

Whether you’re having issues with your existing flat roof or you want to know its current condition, our inspection process is thorough and straightforward.

• Visual survey — We walk the entire roof surface looking for blistering, cracking, ponding evidence, seam separation, and punctures.
• Seam testing — We physically check seam integrity at multiple points, especially at corners, edges, and around penetrations.
• Drainage check — We verify that all drains, scuppers, and gutters are functioning and that the roof has proper slope to drainage points.
• Flashing inspection — We check every wall termination, curb, penetration, and edge detail where the membrane meets other building components.
• Core sample (when needed) — For suspected moisture infiltration, we can take a small core sample to check the insulation and deck condition underneath.
• Detailed report — You get photos, findings, and our recommendation: repair, coat, or replace, with estimated costs for each option.

We do flat roof inspections for property managers, commercial building owners, and homeowners across Salt Lake County, Utah County, and Summit County. If you manage a portfolio of commercial properties, we can set up a regular inspection schedule to catch problems early and extend your roof’s life.