Flat Roof Leak Repair in Pittsburgh, PA
On a flat roof, the drip is almost never under the hole. Water gets in at a flashing, a seam, a drain or through the brick of a parapet, runs along the deck or between old layers, and comes out wherever the ceiling gives it a path. That is why so many leaks get patched three times. We start inside: where the stain is, and whether it shows in every rain, only in wind-driven rain, or only when snow melts. Then on the roof we work outward and uphill from above the stain, checking every detail by hand, feeling for soft decking, and water-testing a suspect detail if we have to. You get a photo of the actual failure before you pay to fix it.
What's included
- Interior check of the stain and its pattern
- Roof walked outward and uphill from the leak
- Every flashing, seam, penetration and drain checked
- Soft decking and wet insulation located
- Water testing of suspect details
- Parapet masonry checked, not just the membrane
- Repair in the roof's own material
- Photo of the failure and the fix
- Follow-up check after the next heavy rain
Sound like your roof?
- A stain that grows after every rain
- A leak that has been patched before and came back
- Drips only in wind-driven rain
- Leaks only when snow melts
- Water showing up far from any obvious hole
Leaking right now? Protect the inside first
Move belongings away from the drip, shut off power to any wet light fixture, and stay off the roof in a storm or on ice. Then request service: an active leak can usually be dried in until the permanent repair.
Roof Leak Repair — FAQs
Usually the patch went over the stain, not the entry point. See how flat roof leaks are traced.
Meltwater backs up behind ice at a frozen drain or gutter and rises over flashings. See flat roofs in winter.
Yes. Open mortar and loose coping on a parapet let water into the wall above the flashing. That is fixed in the masonry, not the roof.
Most run about $300–$1,800 on homes and $350–$2,500 on commercial roofs, priced in writing first.