Project · Commercial Roofing
Nineteen places on a commercial flat roof where water could get in — rips in the TPO membrane, separated seams, and earlier repairs and penetrations that had never been sealed properly. Each one was cleaned, heat-welded or sealed, numbered on the roof and photographed.
What We Found
A TPO roof is a single layer of membrane, so it only takes one opening to let water into the building. On this roof there were nineteen. Some were rips and cuts in the membrane itself. The rest were seams that had pulled apart and earlier repairs around pipes, vents and HVAC lines that had not been sealed properly — the kind of fault that leaks a little in every rain and shows up inside long after it started.
We walked the whole roof, marked every fault, and repaired each one with TPO welded into the existing membrane rather than covered over with caulk or tape.
What We Repaired
Wherever a pipe or equipment support passes through the roof, the membrane has to be sealed around it. We rebuilt the seal at the base so the joint is watertight again.
Why it is done
Refrigerant lines run from the rooftop units down into the building. The opening around them was not properly sealed, so we closed it off and tied it into the membrane.
Why it is done
Vent pipes need flashing that is welded to the roof membrane around them. Where it had failed, we repaired the flashing and the membrane at its base.
Why it is done
TPO sheets are joined by welding them together with hot air. Separated seams, rips and cuts were cleaned and covered with TPO patches welded into the membrane, with rounded corners.
Why it is done
How It Was Done
We walked the entire roof and numbered every fault, so nothing was missed and the owner could check each repair afterward.
TPO will only weld to clean membrane. Each area was scrubbed and prepared before any patch went down.
Patches were heat-welded into the existing membrane, and penetrations were flashed and sealed around their base.
Every finished repair was photographed with its number — the log below is that record.
Repair Log
Each repair is labelled on the membrane with its number. Click any photograph to open it full size.
Have a flat roof that leaks, or one that has been patched more than once? We inspect commercial TPO roofs across the Dallas–Fort Worth Metroplex, mark what we find, and give you a written estimate before any work starts.
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