A flat or low-slope roof lives or dies by its membrane. One continuous sheet of TPO roofing, EPDM roofing, or PVC roofing stands between your building and every rainstorm, heatwave, and rooftop service visit. StormPeak installs and repairs single-ply membrane roofing across West Covina, California, and nearby areas including Baldwin Park, Azusa, Glendora, San Dimas, Pomona, Irwindale, Charter Oak, Vincent, and Covina. Whether you need a full membrane roof installation on a new commercial building, a replacement for a worn-out flat roof membrane, or a targeted TPO roof repair, our licensed and insured crew matches the system to your roof, welds or bonds every seam properly, and leaves you with a watertight roof backed in writing. Call (626) 778-2088 any time — we are available 24/7.
Single-ply membrane roofing covers a flat or low-slope roof with one flexible, waterproof sheet. There are no shingles to lift and no overlapping layers to hide leaks — the membrane, its seams, and its flashing do all the work. That makes the choice of system, and the quality of the seam work, the whole job.
TPO roofing is a white, reflective thermoplastic membrane, and for TPO roofing West Covina property owners often choose it for bright, low-slope roofs that face long hours of sun. Its seams are heat-welded into one continuous sheet, and its bright surface reflects the valley sun instead of absorbing it, which helps keep the building cooler and supports Title 24 cool-roof rules for low-slope roofs in California. EPDM roofing is a synthetic rubber membrane, installed fully adhered or ballasted, that stays flexible through temperature swings and handles foot traffic from rooftop equipment and service visits. PVC roofing is a chemical-resistant thermoplastic with heat-welded seams that stay strong where grease, oils, and chemicals reach the roof — a common problem near restaurant vents and exhausts. Every system needs the same careful details: sealed seams, flashed penetrations around vents and skylights, and drainage that moves water off the roof before it can pond. Not sure which membrane your roof already has, or where the water is getting in? Start with our roof inspection and assessment or roof leak repair service, and we will identify the system and the failure point before recommending anything.
Our single-ply membrane roofing covers new installation, replacement, and repair for flat and low-slope roofs — with the seams, flashing, and drainage done properly on every job. For urgent membrane leaks, we also offer 24/7 emergency roof leak repair.
We install white TPO roofing with heat-welded seams that fuse into a single watertight sheet. The reflective surface helps meet Title 24 cool-roof rules for low-slope roofs in California, and the welded seams stand up to long hours of valley sun without the adhesives drying out or lifting.
We install EPDM roofing fully adhered or ballasted, and we carry out EPDM roof repair with compatible primer, adhesive, and reinforced patches. The flexible rubber membrane handles building movement and foot traffic from rooftop equipment, and punctures are patched so the repair bonds and lasts.
We install PVC roofing where chemical resistance matters most — above restaurants, kitchens, and workshops where grease and fumes reach the roof. Heat-welded PVC seams form a strong, continuous bond, and the membrane resists the chemicals that break down other flat roof materials.
Most membrane failures start at a seam or a flashing, not in the middle of the sheet. We weld, reseal, and reinforce seams, curbs, parapets, and penetrations with system-matched materials, and we check drainage and ponding so water leaves the roof instead of sitting on the new membrane.
We walk the full roof, identify the existing membrane, and map seams, flashing, ponding, and damage.
We recommend TPO, EPDM, or PVC based on your roof slope, sun exposure, foot traffic, and nearby vents or chemicals.
You get a clear written estimate with your membrane options explained — no work starts without your approval.
Our crew installs the membrane, heat-welds or bonds the seams, and flashes every penetration and edge.
We test seams and drainage, walk the finished roof with you, and back the work in writing.
We walk the full roof, identify the existing membrane, and map seams, flashing, ponding, and damage.
Fuses TPO and PVC membrane seams with hot air into one continuous, watertight sheet that resists the California sun.
Presses freshly welded seams flat and tight, so every joint is fully bonded with no lifted edges or air pockets.
Finds trapped water under the membrane without cutting into it, so we know how far hidden damage has spread.
Prepares and bonds EPDM patches and seams so rubber membrane repairs hold through heat, movement, and foot traffic.
A retail building in West Covina had TPO seams pulling apart after years of heat exposure. Water was running under the membrane and staining the ceiling inside the shop, and every heavy rain made the leak worse.
After: We cleaned and re-welded the failed seams, reinforced the perimeter flashing, and tested every joint. The TPO roof repair left the membrane watertight again, and the shop has stayed dry through the rainy season since.
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Repeated foot traffic from HVAC servicing had punctured the EPDM membrane on an office roof in several places. Small holes let water into the insulation below, and the damage was spreading quietly under the surface.
After: We located every puncture with a moisture scan, patched each one with reinforced EPDM, and added walkway pads along the service route. The EPDM roof repair is holding strong, and the walkway pads protect the membrane from future service visits.
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A restaurant roof was failing where kitchen exhaust grease drifted onto the old membrane. The grease was breaking the material down around the vents, and the owner needed a system that could handle it.
After: We installed a new PVC membrane with heat-welded seams around every vent and penetration. PVC resists the grease and chemicals from the kitchen exhaust, the seams are fully bonded, and the roof now drains cleanly away from the cooking area.
Book this service →Single-ply membrane roofing solves the specific failures that plague flat and low-slope roofs in West Covina and across the San Gabriel Valley. Here are the critical problems we fix: Regular roof maintenance and yearly roof inspections catch these early, and our flat roof repair and commercial roofing teams handle the wider roof around the membrane.
Ask a pro →Heat, movement, and age pull seams apart. We re-weld TPO and PVC seams or re-bond EPDM seams with system-matched materials so the joint becomes watertight again.
Standing water soaks seams and finds every weak point. We correct low spots and clear drains and scuppers so water leaves the membrane roof instead of ponding on it.
Service visits, dropped tools, and rooftop equipment tear single-ply membranes. We patch punctures with reinforced material and add walkway pads where traffic is heaviest.
Our team follows NRCA guidelines and OSHA safety standards.
Contact us for a free estimate, or browse the areas we serve across the San Gabriel Valley.
It depends on how the roof is used. White TPO is a popular choice for bright, reflective low-slope roofs. EPDM is a tough, flexible rubber membrane that handles movement and foot traffic well. PVC is the strongest choice where grease or chemicals reach the roof. After a survey of your roof, we recommend the system that fits your building best.
A well-installed TPO roof commonly lasts 20 years or more with regular maintenance. Lifespan depends on membrane thickness, sun exposure, foot traffic, and how promptly small issues are repaired. Yearly inspections and prompt seam checks help it reach its full service life.
Yes. If the membrane itself is still in good condition, a failed seam can usually be cleaned and re-welded, or patched with new TPO material. We first check the surrounding membrane and the deck below, so the repair holds instead of failing again at the next joint.
Yes. White TPO reflects sunlight instead of absorbing it, so the roof surface stays cooler through hot San Gabriel Valley summers. That reduces heat gain into the building and eases the load on rooftop cooling equipment.
White TPO and PVC cool-roof membranes can help meet California Title 24 cool-roof requirements for low-slope roofs. We check the current requirements for your building type and confirm the right membrane and reflectivity for your project before work begins.
Don't let a failed seam or a worn membrane damage your building. Contact us now for reliable TPO, EPDM & PVC membrane roofing services.
Schedule a Repair +1 626-778-2088 →Tell us about your membrane roofing issue and we will arrange a visit to inspect your TPO, EPDM, or PVC roof.