Roof Leak Repair

Roof Leak Repair in Austin, TX

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  Finding the source of a commercial flat roof leak is a diagnostic problem before it is a repair problem. We locate the breach, document it, deliver a temporary dry-in if the situation requires it, and execute a permanent repair — with a written scope before we start and a written closeout when we finish.

  Commercial flat roof leaks almost never enter through the ceiling directly below where the water appears inside the building. Water travels horizontally across the roof deck, down sloped insulation, along vapor barriers, and through cable and conduit penetrations before it finds a ceiling tile or a stained floor. On an East Austin commercial building with a 30-year-old roof, the active ceiling stain in might trace back to a failed curb flashing on an HVAC feet away.

  That diagnostic reality is why leak repair on commercial buildings starts with a methodical roof walk — not a quick look at the area above the stain. We walk the full roof, map all potential entry points in the vicinity of the reported interior water location, and rank them by probability. Perimeter flashings, parapet caps, penetration curbs, and seam locations are the primary candidates. We document each suspect point with photos before we start any repair.

  Austin's building stock creates specific leak contexts. The older warehouse and light-manufacturing buildings along Airport Boulevard and the East Cesar Chavez corridor often have modified bitumen or built-up roof systems over 20 years old — where the leak is usually a systemic membrane failure, not a point repair. The 2000s-era commercial construction in Mueller and the South Lamar mixed-use corridor tends to have TPO with failed pipe-boot or curb-flashing details. The mid-century retail strip on South Congress and Burnet Road has its own specific parapet and edge-metal failure modes. Context matters.

  How We Diagnose a Commercial Roof Leak

  Roof walk and visual survey: We start with a full roof walk, paying particular attention to the area downslope of the reported interior location. Every penetration, seam, flashing termination, and perimeter edge in the suspect zone gets probed and photographed. We look for prior repairs — previous attempts that may have partially addressed the breach but left adjacent failures — which are a common complication on roofs that have been maintained reactively.

  Water test if needed: When the visual survey does not conclusively identify the source, we conduct a controlled water test — flooding a defined roof zone and observing the interior below with a contact at the ceiling level. We work systematically inward from the perimeter of the suspect area. Water testing adds time to the diagnostic process but eliminates guesswork on complex roofs where multiple potential entry points are present.

  Interior review: For facilities where interior access is possible, we review the ceiling and deck structure below the stain — often the direction of the water travel on the structural deck narrows the search zone on the roof significantly. On a Mueller-area office building where the concrete deck has a defined slope, the water trail under the deck is often more informative than the ceiling stain location.

  Temporary dry-in: If the building is actively taking water during a weather event or if permanent repair requires material lead time, we install a temporary dry-in immediately. For inner-Austin buildings — Rainey Street corridor, South Congress, 2nd Street District — we can have crews on-site within four business hours of confirmed authorization during business hours. Temporary dry-in uses compatible materials and is documented so the permanent repair can be evaluated against the dry-in condition.

  Permanent repair scope: We write the repair scope before we start work. The scope describes what was found, what will be repaired, the materials and methods, and what the repair will not address (conditions outside the identified breach that may need future attention). The scope is the basis for authorization — we do not do open-ended time-and-materials leak repair without a defined scope.

  Common repair types: Pipe boot replacement on a failed EPDM or TPO boot — the most common point repair on roofs under 15 years old in Austin's commercial stock. Parapet counter-flashing re-installation on a tilt-wall building where the through-wall flashing has pulled. Curb flashing replacement on an HVAC unit where the collar has separated at the weld. Seam repair on a TPO field membrane where a lap weld has de-bonded at a low point. Each repair type uses manufacturer-compatible materials and methods.

  Every leak repair we execute closes out with a written report: the identified breach location with before-and-after photos, the repair scope as executed (noting any deviations from the pre-job scope and why), materials used with product name and lot number, and any related conditions observed during repair that should be monitored. The closeout report goes into the building's roof file — which most buildings in the Domain submarket and Class A office inventory keep as part of their facilities management records.

  We flag conditions adjacent to the repair that are likely to produce future leaks. A pipe boot replacement on a 15-year-old TPO roof often reveals that adjacent pipe boots and curb flashings are in similar condition. Noting those conditions in the repair closeout gives the building owner a maintenance horizon to plan against rather than a series of reactive emergency calls.

  How quickly can you respond to an active commercial roof leak in Austin?

  For inner-city Austin — downtown, East Austin, South Congress, Mueller, Domain — we target four business hours from confirmed authorization to crew on-site during business hours. For Travis County suburban locations like Wells Branch, Pflugerville, and Del Valle, we target same-day response. We maintain emergency dry-in materials staged for rapid deployment — we do not source materials after authorization.

  My building is under a manufacturer's warranty. Will a repair void it?

  Repairs made by non-approved contractors can void manufacturer warranties. We are familiar with the approval requirements of the major TPO and EPDM manufacturers active in the Central Texas market. If your building is under a current NDL warranty, we verify the manufacturer's requirements before starting any repair and, where required, notify the manufacturer's regional representative. We document the repair to the standard the manufacturer requires for warranty compliance.

  Can you repair a leak on a roof that was installed by another contractor?

  Yes. We work on existing roof systems regardless of who installed them. We document the existing system condition before repair so the scope is based on what is actually there, not an assumed specification. For older roofs where the original installation record is unavailable — common on Austin buildings that have changed ownership multiple times — we identify the membrane type and system during the diagnostic walk and specify compatible repair materials accordingly.

  Report a commercial roof leak and get a diagnostic scope.

  We respond within four business hours in the Austin core and same-day in Travis County suburbs. Temporary dry-in available if the building is taking water.

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