Open Seams On TPO
- You See
- A lifted edge where two sheets of white membrane overlap.
- What It Means
- Summer heat cycles worked the weld loose; a heat-welded cover strip closes it.
As an Elkhart flat roof repair contractor, we fix seams, drains, edges, and blisters on membrane roofs with material that matches the roof already there.

Elkhart flat roof repair makes sense while the insulation under the membrane stays dry. The table shows where each path fits on a low-slope roof.
These are the conditions that bring owners of low-slope roofs in Elkhart to call, sorted by what drives them.
A targeted membrane repair keeps the dry parts of the roof working and stops water at the spot it was getting in.
Core cuts show where the board is wet, so only that patch of insulation comes out and the dry roof around it keeps its R-value and its membrane.
Clearing a strainer and re-flashing the drain bowl lets the roof shed rain and snowmelt, which takes pressure off the seams nearest the drain.
TPO gets welded TPO, EPDM gets primed EPDM tape, and built-up roofs get compatible plies, so the repair bonds and moves with the roof.
Each repair gets a written note with photos and the roof area marked, so the next person on the roof knows what was fixed and when.
A temporary patch over the opening comes first, then the permanent membrane repair once the roof is dry enough to bond.
Call Us(574) 384-0858Each step is a decision, made in this order, before any membrane gets cut.
We walk the membrane, seams, drains, edge metal, and curbs, then check ceilings inside where stains show. Moisture readings mark the wet area before anything else happens.
If the wet area is a small part of the roof, repair wins. If water has spread through most of the insulation, we tell you plainly that replacement is the better spend.
The membrane type decides the patch: welded TPO, taped and primed EPDM, or compatible plies for built-up and modified bitumen. Mixing systems shortens the life of a patch.
Some primers and adhesives need minimum temperatures. In cold months a temporary patch stops the leak, and the permanent repair waits for a dry, milder day.
Seams get probed after welding and drains get water-tested where possible. You get photos of the finished repair and the area marked on a roof sketch.
Flat roofs often share a building with metal sections, plant equipment, or a leak that needs tracing first.
Laps, trim, fasteners, and rusted panels on steel roofs.
Common FixesTraced from the ceiling stain to the roof opening.
Common FixesCurbs, stacks, and drains on working plant roofs.
Common FixesAnswers to the questions owners ask most before a membrane repair.
The size of the wet area, the membrane type, the number of penetrations inside the repair zone, and how easily the roof can be reached set the price. Details at drains, parapets, and curbs take longer than an open field patch. We price it after the inspection, at no charge.
Find the source first, because water travels under membranes before it drips. Then repair with the same system: heat-welded patches on TPO, primed tape on EPDM, and matching plies on built-up roofs. Any wet insulation under the patch comes out so moisture stays out of the new work.
Small blisters that are still sealed get logged and watched. Large, split, or growing ones are cut open, dried, and patched over with compatible material. A roof with many blisters gets a moisture survey, since a wide spread of them points to wet insulation below.
Temporary patches go on in cold weather to stop active leaks. The permanent repair needs a dry surface and, for some primers and adhesives, a minimum temperature, so it follows on a milder day or uses a cold-rated product. Snow is cleared from the work area first.
Indiana commercial buildings fall under 675 IAC 13. The state Fire Prevention and Building Safety Commission lists the 2014 Indiana Building Code as the edition in effect, and the local building department applies it to a specific repair.
Tell us where the water shows up inside and what kind of membrane is on top. We will inspect it and price the repair.