If Your Roof
Has One Open Lap
A single seam has lifted near a drain, and the board around it is dry.
Start WithA welded or taped seam patch
Greenwood Flat Roof Repair Contractor
Flat Roof Repair That Keeps Membrane Roofs Working Longer
As a Greenwood flat roof repair contractor, we patch TPO, EPDM, and built-up roofs, reset leaking drains, and replace the wet board under each repair.
- Same membrane back
- Drains reset low
- Wet board replaced
- TPO, EPDM, and built-up
- Drain bowls and clamps
- Ponding near low edges
- Blisters cut and patched
Repair Or Replace
Is Greenwood Flat Roof Repair Right For Your Roof?
Greenwood flat roof repair fits most low-slope roofs we walk. These four situations show where a patch works and where it stops making sense.
If Your Roof
Holds Water At A Drain
Rings of dirt mark where water sits around a drain set higher than the deck.
Start WithDrain reset and tapered fill
If Your Roof
Shows A Few Blisters
Bubbles sit in the field, and some are cracked along the top.
Start WithBlister repair under matching plies
If Your Roof
Is Wet Under Most Of The Field
Cores come up soaked across many bays, and patches keep failing side by side.
Start WithA replacement price
Roof Conditions
Flat Roof Repair Problems On Greenwood Retail Roofs
Low-slope roofs fail in a handful of predictable places. Each card names what drives the damage.
Water Standing Around A Drain
You See
Dark rings and silt on the membrane around a drain bowl.
What It Means
The strainer is packed or the drain sits high. Water stays for days and works under the clamping ring.
Peeling Seam Edge
You See
A lap edge curled up enough to slide a fingernail under.
What It Means
Summer heat and winter cold moved the sheet until the adhesive or weld let go at the outer edge.
Growing Blisters
You See
Bubbles in the field that get bigger every summer.
What It Means
Air or water trapped between plies expands in the heat. Cracked blisters let rain straight into the roof.
Punctures Near Units
You See
Small cuts and dropped-screw holes along the service path.
What It Means
Technicians kneel, drop parts, and drag tools. Each hole lets water into the board right where people walk.
Split Membrane At A Corner
You See
A short crack at an inside corner near a parapet.
What It Means
Cold weather shrinks aging membrane, and corners take the strain first. Ice in the crack opens it wider.
Loose Perimeter Edge
You See
Edge metal lifted at a roof corner after a windy night.
What It Means
Wind got under a loose cleat. The membrane folded over the edge now pulls away with it.
Repair Options
Greenwood Flat Roof Repair Options By Membrane
Every patch matches the roof already in place. Here is what goes on each type.
TPO Seam Welds
Heat-welded TPO patches fuse to the existing sheet once the surface is cleaned and primed, giving a seam as strong as the original.
EPDM Tape And Patches
Cleaned, primed rubber takes seam tape and cured EPDM patches rolled down hard, with lap sealant at every exposed edge.
Flat Roof Blister Repair
Cracked or growing blisters on built-up and modified roofs are cut open, dried, and sealed under new plies of compatible material.
Flat Roof Drain Repair
Clamping rings are replaced, membrane is resealed to the bowl, and drains set high get tapered fill around them.
What Changes
What Flat Roof Repair Changes On Greenwood Buildings
Here is the same low-slope roof before and after a repair visit.
Before The Repair
- Silt rings around a high drain
- Lap edges curling at the corners
- Cracked blisters across the field
- Screw holes along the service path
- Spongy board under the last patch
After The Repair
- Drain reset with water running off
- Laps welded or taped back down
- Blisters opened, dried, and capped
- Walkway pads laid along the path
- Dry insulation under every repair
Water Standing On The Roof?
Ponding near a drain tends to find the nearest weak lap. Book an estimate and we will clear the drain and check the seams around it.
How The Work Runs
How Greenwood Flat Roof Repair Gets Done
Five steps on every low-slope repair.
- 1
Walk And Probe
Every lap is probed, drains are checked for height and debris, and blisters are counted and marked on a roof sketch.
- 2
Core The Soft Spots
Cores come out wherever the board feels soft, so the wet area gets measured before anything is priced.
- 3
List With Prices
Each finding gets a photo and a price, ordered from open leaks down to items that can wait for the next season.
- 4
Patch In Kind
Wet board comes out, new board goes in, and the patch is welded, taped, or plied in the same membrane.
- 5
Photograph The Work
Finished patches and reset drains are photographed and dated for your records.
Related Repairs
Other Repairs For Greenwood Buildings
Steel roofs, hidden leaks, and plant roofs each have their own service.
Steel Panel Roofs
Commercial Metal Roof Repair
Screws, laps, trim, and rusted panels on steel roofs.
- Oversized screws with new washers
- Laps cleaned and resealed
- Rusted panels swapped in kind
Hidden Leaks
Commercial Roof Leak Repair
Stains traced uphill to the curb, boot, or lap.
- Leak path traced from the drip
- Entry point repaired and sealed
- Water test where the roof allows
Plant Roofs
Industrial Roof Repair
Fan curbs, exhaust areas, and roofs over production lines.
- Exhaust-rated membrane at fans
- Containment below any deck opening
- Hot work cleared with plant staff
Questions
Flat Roof Repair Questions From Greenwood Owners
Cost, methods, drains, and blisters on low-slope roofs.
What Is The Best Way To Repair A Flat Roof?
Match the membrane and fix whatever let the water in. A TPO roof gets a welded TPO patch, EPDM gets primed tape and rubber patches, and built-up roofs get compatible plies.
Before any patch goes on, wet insulation under it is cut out, and a high drain or sagging spot that held water gets corrected.
What Sets Flat Roof Repair Cost?
Four things drive it: the membrane type, how large the damaged area is, how much board under it is wet, and the drain or flashing work around it. A single lap patch is a short visit; a soaked section is a bigger job. The price comes after the walk.
How Does Flat Roof Drain Repair Work?
The clamping ring comes off, old sealant and loose membrane are cleaned away, and the sheet is reset into the drain bowl with a new ring. A cracked bowl gets replaced, and a drain sitting above the deck gets tapered fill so water reaches it.
When Do Blisters Need Flat Roof Blister Repair?
Leave small, intact blisters alone and watch them. Cracked ones, growing ones, and any blister in a walking path get cut, dried, and capped. Dozens of blisters across a roof point to wet board underneath, which calls for cores.
Why Does Water Pond On Retail Center Roofs?
Clogged strainers, drains set high, a sagging deck, or board crushed by foot traffic. Two days of standing water after rain is the usual line where it needs attention.
Can A Flat Roof Be Patched In Winter?
Yes, with the right materials. Welded TPO patches go down in cold weather on a dry surface; some adhesives and sealants wait for warmer days, so a temporary seal holds until then.
Hire A Greenwood Flat Roof Repair Contractor
Send the address and the membrane type if you know it. We will walk the roof and price each patch.