As a Frankfort commercial flat roof repair contractor, we weld, tape, and patch TPO, EPDM, PVC, modified bitumen, and built-up roofs with material matched to each membrane.
Frankfort commercial flat roof repair fits roofs where the damage is local and the insulation underneath is still dry.
| Roof Factor | Repair Fits | Look at Restoration or Replacement |
|---|---|---|
| Leak count | One area or a few separate spots | New leaks every season in new places |
| Insulation | Dry under and around the opening | Wet readings across large sections |
| Membrane | Flexible and still taking welds or tape | Brittle, shrinking, or refusing new patches |
| Seams | A few open laps or T-joints | Laps opening along whole runs |
| Blisters | A handful, firm and away from traffic | Blisters spread across the whole field |
Water sits longer on a low-slope roof, so every weak detail gets tested with each rain. These are the conditions we repair most on flat roofs.
Flashing at walls, curbs, and drains is where most flat roof leaks begin. As the membrane ages and shrinks, base flashing lifts at the wall and opens a path straight down the inside face of the parapet.
Usually Means: the wall flashing needs re-adhering or replacing, plus a check of the nearby laps.
Seams lift at their edges and at three-way joints where welds or tape thin out.
Dropped screws, tools, and metal shavings from HVAC work pierce the sheet around equipment.
Clogged strainers, high drains, or deck sag leave ponds that wear seams and feed algae.
Trapped moisture swells between plies in summer heat and can split the surface open.
Each membrane bonds its own way, so the repair method follows the sheet already on your roof.
Membrane cleaner goes on first, then a hot-air welded cover patch over the open lap. Older TPO gets a small test weld, since a weathered surface can resist bonding.
Clean, prime, and set pressure-sensitive seam tape or a cover strip that runs past the opening on both sides onto firm rubber.
Laps get reheated or set in cold adhesive, then a granulated cap patch covers the repair to shield it from sun and foot traffic.
Blistered plies are cut out and rebuilt with new felts and bitumen once the insulation beneath them is dried or replaced.
Flat roof repairs pay off where the problem starts: the seam, drain, or curb that let water in.
A welded TPO patch or taped EPDM strip bonds into the existing sheet, so the repair moves with the roof through hot afternoons and cold snaps.
Clearing a strainer, lowering a drain bowl, or adding tapered crickets gets water off the roof faster and takes daily stress off nearby laps.
Reflashed curbs and new pipe boots close the openings around rooftop units, where flat roofs take on water most often.
Cutting out the wet board under a puncture keeps the deck and surrounding insulation dry, which keeps the roof on the repair path longer.
Ponds still there two days after rain mark the spots that need drain work or tapered fill. Call us to set up a roof walk and a look at the drains.
Call UsFlat roof repairs follow a set order so every patch bonds to clean, dry membrane.
Moisture meters and probes check the membrane around each stain location, and every lap, curb, and drain nearby gets a close look before anything is cut.
Saturated insulation under the opening is removed and replaced, since a patch laid over wet board traps water under the new material.
Membrane cleaner comes first, then primer where the system calls for it, then a patch that runs past the opening on every side.
Strainers, drain bowls, and scuppers on that section get cleared so the next rain runs off the roof and away from the new work.
Flat roofs often share a building with metal sections or plant equipment. These services cover the rest of the roof.
Metal additions and canopies on the same building leak at screws and end laps, which call for fastener and lap work.
Metal roof repair for screws, laps, and rust
When the stain inside sits far from any obvious opening, leak tracing finds the water path before a patch goes on.
Commercial roof leak repair
Plant roofs add exhaust residue and heat around fans, which need membrane rated for that exposure.
Industrial roof repairFlashing failures at curbs, walls, and drains cause most of them, with open seams and punctures close behind. Water sits on a low-slope roof long enough to test every weak spot.
Pitch pans with shrunken filler and clogged scuppers add to the list, so a full walk around the main leak tends to turn up a second problem worth fixing on the same visit.
Each membrane gets its own method. TPO and PVC are cleaned and hot-air welded, EPDM is primed and taped, modified bitumen laps are reheated or cold-adhered under a cap patch, and built-up plies are rebuilt. Every patch extends past the opening onto clean, firm membrane on all sides.
Active blisters can. The blister is cut open, the plies and insulation underneath are dried, the flaps are re-adhered, and a patch covers the cut with overlap all around. Small firm blisters away from foot traffic are often left and checked at the next roof walk. Blisters across the whole field point to moisture in the system.
Start with the simplest cause, since clearing a clogged strainer fixes many ponds. A drain set above the low spot gets a sump or a lowered bowl, missing crickets behind curbs get added, and an undersized scupper gets enlarged or paired with an overflow. Deck sag between joists needs a structural check before tapered fill.
A patch of matching membrane, welded on TPO and PVC or taped on EPDM, that extends past the hole on every side. If water already went through, the wet insulation below gets cut out first. Walkway pads along service routes and a cleanup check after HVAC work keep new punctures down.
Tell us the membrane type if you know it and where water shows up inside, and we will set up the roof walk.
