Seam Reweld Or Retape
Cleaning and rewelding a TPO or PVC lap, or priming and taping an EPDM lap, when the failure stays along one seam run and the sheet beside it is still flexible.
TPO, EPDM, PVC, Mod Bit, Built-Up
Bowling Green Flat Roof Repair Contractor
Extend Your Flat Roof's Life With Matched Patches and Rewelded Seams
As a Bowling Green flat roof repair contractor, we fix open seams, punctures, blisters, ponding, and loose base flashing with materials that match your membrane.
- Patch method follows the membrane
- Seams probed past the leak
- Drains cleared before slope work
- Parapet and curb flashing reset
Fit Check
Is This Flat Roof a Fit for Repair?
A Bowling Green flat roof repair contractor can fix a membrane that is still flexible and mostly dry. Here is how to tell which side your roof sits on.
Repair Fits When
- One or two seams have lifted at the edge
- A puncture sits near the hatch or a unit
- Blisters are few, firm, and outside the walk path
- Base flashing has pulled away along one parapet run
- Ponding traces back to a clogged strainer
Plan For More When
- Seams are letting go along most of the laps
- Blister clusters cover large parts of the field
- Core cuts show soaked insulation across whole bays
- The sheet has shrunk and is pulling flashing off the walls
- The membrane cracks when you fold a loose corner
Flat Roof Signs
Flat Roof Repair Problems We See in Bowling Green
Each row pairs what you notice with the failure behind it and the repair that matches your sheet.
Leak under a TPO or PVC lap
Likely Cause
Weathered seam edges that lost their weld, often at T-joints where three sheets meet.
What We Do
We scrub the lap with membrane cleaner, reweld it with hot air, and probe the rest of the seam line.
Loose seam tape on EPDM
Likely Cause
Old adhesive and talc under the tape, plus shrinkage pulling at the laps near parapets.
What We Do
Laps are cleaned to bare rubber, primed, and covered with new seam tape or a cover strip.
Ponds that sit for days
Likely Cause
Debris over the strainer, a drain set high, or a deck that sags between joists.
What We Do
Strainers are cleared, high drains lowered or sumped, and crickets built behind curbs that dam the water.
Bubbles in a modified bitumen roof
Likely Cause
Moisture or air trapped between plies that expands in the sun and lifts the cap sheet.
What We Do
Cracked or growing blisters are cut, dried, re-adhered, and patched; small firm ones get marked and watched.
Water at a parapet or rooftop unit
Likely Cause
Base flashing pulled off as the sheet shrank, or open coping joints feeding water inside the wall.
What We Do
New base flashing, a reset termination bar, coping joint covers, and fresh sealant at the counterflashing.
Repair Options
Commercial Roof Repair Options for Bowling Green
Four ways a flat roof repair can go, from a spot patch to a section rebuild.
Matched Membrane Patch
A patch of the same sheet, welded or primed and rolled, with rounded corners, over a puncture, a cut blister, or a scuffed spot near the hatch. Wet insulation under it comes out first.
Flashing And Coping Rework
New base flashing at parapets and curbs, termination bars reset, coping joint covers added, and counterflashing resealed where water was getting behind the membrane.
Drain And Slope Fixes
Cleared strainers, lowered or sumped drains, tapered saddles behind units, and overflow scuppers through the parapet when a pond keeps forming in one place.
Why Repair
Benefits of Repairing Your Roof
How a flat roof reads before and after the failed details are fixed.
Before The Repair
- Lifted laps. The seam edge curls up, and wind-driven rain pushes under it toward the insulation.
- Mastic smears. Old roof cement over a TPO seam traps dirt and keeps a welded patch from bonding.
- Standing ponds. Water sits for days at a clogged drain and wears the surface around it faster.
- Soft spots. Crushed or wet insulation under the walk path flexes the sheet with every step.
After The Repair
- Welded or taped laps. The seam is bonded again across its full width and probed along the run.
- Clean patches. The mastic comes off, the area is cleaned, and the patch bonds to the membrane itself.
- Drains that flow. Cleared and reset drains pull rain off the field instead of holding it.
- Firm footing. New insulation and cover board go in under the patch so the sheet stops flexing.
Water Coming Through a Flat Roof?
Note which bay or unit the drip sits under.
Planning A Repair
Seams lifting or water ponding after storms? Send the address and we will set up a roof walk.
Get A Free EstimateRepair Steps
How a Bowling Green Flat Roof Repair Contractor Works the Job
The membrane on your roof decides the materials; the order stays the same.
- 1
Inspect Your Roof
Identify the sheet first: TPO, EPDM, PVC, modified bitumen, or built-up. Then we probe seams near the leak, check flashing heights, and take moisture readings around each suspect spot.
- 2
Open And Dry
Wet insulation under a puncture or blister is cut out and replaced with matching board, and the surrounding membrane is cleaned until it shows bare, firm sheet.
- 3
Weld, Tape, Or Torch
TPO and PVC patches are hot-air welded, EPDM gets primer and peel-and-stick, and mod bit gets a cut-in cap sheet. Every edge is probed or rolled before moving on.
- 4
Close The Area
Drains get cleared, tools and screws are swept off the field, and you get photos of each repair marked on a simple roof plan.
Related Repairs
More Repair Services for the Same Building
Flat roofs often share a building with metal sections, plant equipment, or a leak that needs tracing.
Commercial Metal Roof Repair
A metal shop or canopy beside the flat roof? Backed-out screws, end laps, and rusted panels get fixed with matching profiles.
Commercial metal roof repair
Commercial Roof Leak Repair
When the stain inside lines up with no seam you can see, leak tracing finds the entry point before anything gets cut.
Commercial roof leak repair
Industrial Roof Repair
Plant roofs with exhaust fans and long service routes get repairs staged around production and shutdown windows.
Industrial roof repairFlat Roof Questions
Best Flat Roof Repair Answers for Bowling Green Owners
How is open seam repair done on TPO and EPDM roofs in Bowling Green?
It follows the sheet. A TPO lap gets scrubbed with membrane cleaner so hot air can fuse it, then rewelded or covered with a welded patch.
An EPDM lap gets old adhesive and talc removed, primer, and seam tape or a cover strip. A probe along the rest of the seam shows whether one spot failed or the whole lap is going.
When does a flat roof blister need to be cut out?
Cut it out when it is cracked, growing, or sitting in a walk path. Blisters form when trapped moisture or air expands in the sun and lifts the felts or the membrane.
Small firm ones with intact surfaces get marked and watched. A cluster across the field points to wet insulation, so a core cut or moisture scan comes before any repair plan.
What is the fix for ponding water on a flat roof?
Get the water to a drain. That starts with clearing strainers and scuppers, then lowering a high drain or adding a sump, building saddles behind units, or cutting an overflow scupper through the parapet.
Water that returns to the same spot after every rain points to slope or deck sag, so the deck under it gets checked too.
How is a flat roof puncture patched by membrane type?
Each sheet gets its own patch. TPO and PVC take a hot-air welded patch with rounded corners, EPDM takes a primed peel-and-stick patch rolled tight, modified bitumen takes a cut-in cap sheet, and built-up roofs get layered felts and bitumen with the gravel put back.
Wet insulation under the hole is replaced before the patch goes down.
Why do flat roofs leak at parapet walls and curbs?
That is where the sheet turns up the wall and takes the most movement and sun. Base flashing pulls away as the membrane shrinks, termination bars loosen, and counterflashing caulk dries out. Open coping joints also let water run down inside the wall, and rusted curb caps let rain in behind unit flashing.
Hire a Bowling Green Flat Roof Repair Contractor
Tell us the membrane type if you know it, and where the water shows up inside.