Commercial Roof Repair

Commercial Roof Repair in Austin, TX

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  Membrane patches, flashing correction, and drain restoration for commercial flat roofs across the Austin metro — scoped to fix the actual failure point, not just the visible wet spot on the ceiling.

  Flat roof leaks on Austin commercial buildings rarely originate where the ceiling stain appears. Water migrates laterally through insulation before it finds a penetration point — on a typical sloped Austin commercial roof, the travel distance between the leak source and the interior wet spot can be 20 to 40 feet. We locate the failure point before we repair it.

  Our repair process starts with a roof walk that covers every probable failure zone: seams, penetration flashings, drain sumps and overflow drain details, parapet and coping, rooftop equipment curbs, and any prior repair sites. On buildings where the leak source isn't visible from the surface, we use infrared scan data or flood testing to confirm location before opening the roof. We do not apply a patch to the first suspicious area we find.

  Austin's storm profile creates specific repair scenarios. The Memorial Day 2015 flood and Halloween 2013 flood events demonstrated that Central Texas convective storms can drop 4 to 8 inches in under four hours — a rainfall intensity that overwhelms undersized or partially blocked drain systems on older Austin commercial roofs, producing ponding that pushes water through seams and flashings that would otherwise hold. After any significant storm, we assess drain condition and ponding extent alongside membrane condition.

  The 2nd Street District and Congress Ave corridor buildings we work on often have constrained rooftop access — shared elevator cores, active tenants below, and limited material staging space. We scope every repair with those logistics in mind. The repair documentation we deliver at closeout includes photo-keyed location records and a written condition note on adjacent areas — so the next inspection has a baseline rather than starting from zero.

  What We Fix and How We Find It

  Membrane seam failures are the most common repair on Austin commercial flat roofs. Heat-welded TPO and PVC seams that were installed at incorrect weld settings — or that have cycled through enough thermal expansion over Austin's wide temperature range (winter lows near 30°F, summer surface temps above 150°F) — delaminate at the lap edge. The failure often appears as a slight membrane lift at the seam rather than a visible gap. We probe-test suspect seams systematically, not just the sections near the reported leak.

  Penetration and curb flashings are the second most common failure. Rooftop HVAC equipment — common on Domain and Stonelake office buildings where server-room cooling requirements add significant rooftop mechanical loads — generates vibration and movement that cycles the flashing sealant at the curb-to-membrane interface. We strip failed flashing, clean to bare substrate, and reinstall with compatible flashing material welded or adhered per the original membrane manufacturer's specification.

  Drain and ponding issues are the third category. Austin's Edwards Plateau karst limestone geology creates drainage situations that differ from flat-terrain markets: some older commercial buildings east of I-35 and in the Mueller area have drain systems that were designed before current ponding-restriction interpretations of the building code. We document ponding extent and depth, clear debris and biological growth from drain bowls and standpipes, and where drain capacity is inadequate, scope the drain modification rather than just clearing the blockage.

  Repair Standards and Warranty Compatibility

  Repairs on roofs under active manufacturer warranty must be performed with compatible materials and to manufacturer-specified details to preserve the warranty. We identify the membrane manufacturer and installation date before scoping any repair on a building with a warranty in force. Some manufacturers require notification and approval before any repair to the warranted system — we verify that requirement and handle the notification rather than leaving the building owner to manage it.

  Repairs on out-of-warranty roofs are scoped to the same material standard as the original system where practical. We do not use off-spec patch materials on commercial flat roofs because the repair then becomes the next leak point. Patches on TPO roofs use TPO membrane welded with the same hot-air equipment used in full installation; patches on EPDM use EPDM-compatible adhesive and tape systems rated for the substrate condition. Silicone or urethane sealant is not used as a substitute for membrane patching.

  We provide written repair documentation at closeout: the failure mode, the repair method, materials used (including manufacturer product numbers), and a post-repair photo record. This documentation matters at lease renewal, property sale, and for any future warranty discussion. Buildings in the UT Austin research park corridor and the Seton/Dell Medical District campus often have institutional property management that requires this documentation format — we deliver it as standard, not as an add-on.

  When Repair Is and Isn't the Right Scope

  We will tell you when a building needs replacement, not repair. If a roof walk shows widespread seam deterioration, insulation saturation in multiple zones, or a system that has been repeatedly repaired with incompatible materials, patching is not a responsible recommendation. We document what we find and provide both a repair estimate (if repair is viable) and a replacement estimate so the building owner can make an informed capital decision.

  Repair is appropriate when the failure is isolated — one or two seam breaches, a single failed penetration flashing, a drain blockage with localized ponding — on a roof where the surrounding membrane is in serviceable condition. On newer Austin commercial buildings, including the warehouse and flex-industrial stock east of SH 130 near the Tesla Gigafactory Texas site in Del Valle, roofs under 10 years old with isolated failures almost always have repair as the right scope. On pre-, repair economics need to be evaluated against the full system's remaining life.

  How do you find a flat roof leak when the ceiling stain is far from the roof penetrations?

  We walk the full roof surface, probe all seams in the vicinity of the reported interior location, and check every penetration and drain within the likely water-travel radius. If the source isn't identifiable visually, we can do flood testing on a defined roof section — contained by temporary dams — to confirm the breach location before opening the roof. We do not guess and patch.

  Does repairing a roof void the manufacturer's warranty?

  Not if the repair is performed with compatible materials and to manufacturer-specified details. Some manufacturers require advance notification before any repair to the warranted system. We verify warranty status and notification requirements before starting any repair on an in-warranty roof, and we document the repair for the manufacturer's record.

  How long does a commercial roof repair take in Austin?

  Most isolated repairs — a failed seam section, a penetration flashing, a drain restoration — are completed in one day. Larger multi-zone repair scopes on older East Austin warehouse buildings or Domain-area office buildings with many penetrations may run two to three days. We provide a written scope and schedule before starting.

  Get a written repair assessment for your Austin commercial roof.

  Our project managers will walk the roof, locate the failure point, and deliver a written scope with repair cost — so you know what you are authorizing before any work starts.

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