As an Ashland flat roof repair contractor, we weld, prime and cap patches on low-slope membranes so seams, blisters and drains stop letting water in.
An Ashland flat roof repair contractor looks first at the boards under the sheet. Dry insulation with damage in a few spots keeps the roof on the repair side.
Flat roofs fail at the same handful of spots. The visible gap is usually shorter than the failed bond around it.
Water that sits at a drain or a T-joint works into the weld or tape until the lap lets go. On TPO the bond fails before the gap shows, so we probe both directions and mark where the opening really ends.
Usually Means: Scrub, reweld or prime and tape, then a cover strip past both ends.
Air or moisture trapped between layers swells in the sun and pushes the surface up, most often on built-up and mod bit roofs.
Dirt rings around a drain set too high or a sagging board show where water sits after rain.
Dropped screws near rooftop units, hail on thin sheets and foot traffic over conduit open small holes.
A slipped clamping ring lets water bypass the drain bowl and run under the membrane.
Each membrane takes its own primer, patch and tool. Mixing methods leads to patches that peel off within a season.
Oxidized sheet gets scrubbed clean, then a new TPO patch is hot-air welded with round corners well past the damage.
Matching PVC goes on with hot air, kept clear of any asphalt product that would soften it.
Primer and a peel-and-stick EPDM patch, rolled firmly so the edges stay down on rubber seams and T-joints.
Torch, cold adhesive or self-adhered cap patches with granules embedded on any exposed patch.
Loose gravel comes off first, then new plies of felt and asphalt and fresh gravel over the repair.
A flat roof repaired at the first open seam stays on the cheaper side of every decision that follows.
A lap closed before the next storm keeps water out of the cover board and insulation. Once those boards soak, the fix grows from a patch to cutting out the wet section down to the deck.
Cleared strainers and reset clamps move water off the roof before it finds a weak lap.
A welded patch becomes part of the membrane instead of a cement smear that needs redoing.
Tapered sumps and small crickets stop water sitting against curbs and seams.
A clogged strainer or a drain set high holds water against the nearest seam. We clear it, check the clamp and look at the laps around it.
A seam repair on a flat roof follows the same order every time.
We walk the membrane, probe every lap near the leak and mark both ends of each opening with paint.
An unknown sheet gets a small test cut so we order the right patch, primer and adhesive.
Dirt and oxidation get scrubbed off both sides of the lap, and torn edges are cut back so the patch lies flat.
TPO and PVC get hot air, EPDM gets primer and tape, and mod bit gets a cap patch.
Once the patch cools or cures, the repaired lap is probed end to end before we leave.
Flat roofs often share a building with other repair needs.
When the stain inside is far from any obvious seam, leak tracing finds the entry point before we patch.
Commercial Roof Leak Repair in AshlandPlant roofs with exhaust fan residue need membrane rated for that exposure, plus walk pads along service paths.
Industrial Roof Repair in AshlandA steel shop with a flat office addition needs repairs on both systems in one visit.
Commercial Metal Roof Repair in AshlandThe flat roof questions owners ask us most.
We find where the open lap starts and stops with a probe, scrub both sides, then reweld TPO or PVC with hot air or prime and tape EPDM. A cover strip runs past the opening, and the lap is probed again once it cools. Seams at drains and T-joints fail first.
Small, firm blisters that stay closed get marked and watched. Soft or cracked ones get cut, dried and patched. A cluster across one section points to wet insulation, and a fresh blister near a leak calls for a core cut. Service paths go around blisters until they are repaired.
It starts as drainage and turns into a repair once standing water finds a weak lap. A clogged strainer gets cleared, a high drain gets a tapered sump or retrofit insert, sagging boards get replaced, and water trapped behind a curb gets a small cricket. Ponding over large areas belongs with a recover or replacement.
Torn edges are cut back, the area is cleaned and a matching patch with rounded corners is welded or adhered well past the hole. We press around it first: soft insulation underneath means water got in, and that board is cut out and replaced before patching.
Clogged drains, scuppers and downspouts let storm water pile up behind parapets. The city's Floodwall Division runs six pump stations and over three miles of wall, but rooftop water is the building's job. Clearing strainers, enlarging overflow scuppers and resealing downspout joints come before any seam work.
TPO and PVC take hot-air welded patches, EPDM takes primer and a peel-and-stick patch, modified bitumen takes a torch, cold adhesive or self-adhered cap, and built-up roofs take new plies of felt and asphalt under fresh gravel. An unknown sheet gets a test cut first.
Tell us the membrane if you know it and where the water shows up. We will probe the laps and show you what opened.
