TPO and PVC are both durable single-ply roofing membranes, and many of their repair methods are similar. A proper repair begins by locating the true source of the leak, cleaning and preparing the existing membrane, removing damaged or contaminated material when necessary, and heat-welding compatible membrane patches over the affected area. Seams, penetrations, drains, equipment curbs, and rooftop transitions receive special attention because these are the areas where leaks most often develop.

Choosing the correct membrane is especially important around commercial kitchens. PVC is generally preferred on restaurants and food-processing facilities because it offers greater resistance to animal fats, cooking oils, grease, and many chemicals discharged through rooftop exhaust systems. TPO performs extremely well on most commercial buildings, but prolonged exposure to grease and oil can deteriorate the membrane and shorten its service life.

Pillar Roofing identifies the existing roof system and the conditions surrounding the repair so the materials used are compatible, properly welded, and suited to the building’s operation.

Modified-Bitumen Roofing is a polymer-enhanced asphalt membrane installed in rolls roughly three feet wide, generally as a base sheet and protective cap sheet.

Our Finding & Fixing method starts with a systematic inspection of all seams, penetrations, pitch pockets, curbs, drains, edge metal, ponding areas, cracks, and blisters, while also checking for trapped moisture beneath the membrane. When visual inspection is inconclusive, we can scan the roof surface with an infrared moisture scanning camera; we also use our water & blue dye method to find the leak.

Once we identify the problem area, we clean and dry the surface, cut back deteriorated material, and remove and replace wet insulation. A Modified-Bitumen patch is bonded over the leak repair area. We will properly reseal and waterproof any open laps, splits, large blisters, and failed flashings.

These aging ridge vents had become a liability because the facility’s customer contracts required a controlled, airtight interior for the products handled inside.

Pillar Roofing removed every vent, closed the large openings with matching metal panels, sealed each transition, treated the rusted areas, and applied a protective coating across the entire roof.

The completed system restored a continuous, watertight barrier while helping the building maintain the controlled environment its operation required.

Moisture trapped beneath a commercial roof can remain hidden long after the original leak occurs. Following a sunny, dry day, the roof begins releasing the heat it absorbed as the sun sets. Dry and moisture-damaged areas cool at different rates because water changes the thermal behavior of the insulation.

At the end of the day, through an infrared camera, suspected wet areas often appear as bright, warm anomalies against the cooler surrounding roof.

A Pillar Roofing Coordinator uses the infrared imaging gun to help narrow the investigation, define suspected damage, and avoid unnecessary demolition of dry roofing. Because the camera detects temperature differences rather than water itself, identified areas are evaluated and, when appropriate, verified with targeted moisture testing or roof cores before repairs are recommended.

When Pillar Roofing is called to stop a commercial roof leak, our responsibility does not end when the invoice is paid. Once we identify the source and complete the repair, our workmanship on that area is covered for two full years. If the repair itself fails during that period, contact us and we will treat it as a priority—returning promptly to inspect the problem and make it right under the terms of the written warranty.

That two-year term is deliberate and appropriate for commercial repair work. Many commercial roofs are already well into their service life and have endured years of Texas heat, hail, wind, standing water, aging materials, and layers of previous repairs. No contractor can responsibly guarantee an entire aging roof based on one localized repair. Our warranty covers the work we performed—not unrelated failures elsewhere—while giving the property owner two full years of written accountability for the repair entrusted to Pillar Roofing.