Repair Fits
- Seams
- A few open laps or split corners
- Insulation
- Dry on core cuts
- Membrane
- Still takes a test weld or tape
- Ponding
- Small areas near drains
- Repair
- Weld, tape, or cap strip at each spot
Flat Roof Repair
Nicholasville Flat Roof Repair Contractor
Close Open Seams and Ponding Spots on Low-Slope Roofs
As a Nicholasville flat roof repair contractor, we reweld, retape, and patch TPO, PVC, EPDM, modified bitumen, and built-up roofs on commercial buildings.
- Membranes
- TPO, PVC, EPDM, Mod Bit, BUR
- Seam Method
- Matched to the Sheet
- Ponding
- Drains First, Then Slope
Repair Or Replace
Can This Flat Roof Still Be Repaired?
A Nicholasville flat roof repair contractor answers that by looking under the membrane. Dry insulation and holding seams mean repair, and saturated boards mean replacement.
Replacement Fits
- Seams
- Failing in long runs
- Insulation
- Wet across wide areas
- Membrane
- Refuses new welds
- Ponding
- Large ponds that never drain
- Repair
- Tear-off or recover with a new system
Flat Roof Conditions
Flat Roof Repair Problems on Nicholasville Buildings
Low-slope roofs leak at seams, flashing, and low spots long before the field wears out. These five show up most on commercial flat roofs.
You NoticeLikely CauseWhat We Do
Seam Edges Lifting on TPO or PVC
Likely Cause
Welds that never fully fused, or old sheet that has stiffened around the lap.
What We Do
Clean the lap, run a test weld, then reweld or weld a cover strip and probe the full length.
Blisters on Built-Up or Mod Bit
Likely Cause
Trapped moisture or poor adhesion under the cap sheet.
What We Do
Slice open blisters that have split or sit in foot traffic, let them dry, and patch with matching material.
Rings of Dirt Where Water Sat
Likely Cause
Clogged strainers and scuppers, or a sag with no slope to a drain.
What We Do
Clear drain bodies and leaders, mark the pond after rain, and cut tapered insulation into the low spot.
A Small Hole Near a Rooftop Unit
Likely Cause
Dropped screws, panels, and tools from HVAC service.
What We Do
Cut out wet insulation, then weld a rounded-corner TPO patch or roll an EPDM patch with factory tape.
Stains Along the Base of a Parapet
Likely Cause
Open coping cap joints letting water into the wall cavity above the flashing.
What We Do
Reseal splice plates under the coping, reattach base flashing, and redo the counterflashing sealant.
Repair Options
Flat Roof Repair Options for Nicholasville
Each membrane takes its own repair. Matching the method to the sheet is what keeps a patch from becoming the next leak.
TPO and PVC Seam Welding
Hot-air welding after the lap is cleaned. PVC repairs get probed along the whole repaired length before anyone leaves the roof.
EPDM Primer and Seam Tape
Old seam tape comes off, the rubber gets a primer-compatible cleaner, and new tape or a cover strip is rolled down with a pressure roller.
Mod Bit and Built-Up Cap Strips
A strip of new cap sheet is heated or adhered over open laps, and cracked base flashing gets rebuilt with matching plies.
Crickets and Tapered Fill
Where clearing drains still leaves standing water, tapered insulation or a cricket gets cut in, and an added drain or scupper goes where water has no exit.
Why Repair The Flat Roof
Benefits of Repairing Your Flat Roof
A repaired seam or drain protects more than the spot itself, since the water it stops would have spread under the membrane.
- Retail Strips
- Light Industrial
- Office Buildings
- Warehouses
- Churches and Schools
Less Weight on the Deck
Long-standing ponds add weight to the deck and wear the membrane faster. Clearing the drain and adding slope takes that load off.
Seams That Hold Again
A rewelded or retaped lap closes the opening that let water travel sideways under the sheet toward the next bay.
Dry Wall Cavities
Fixing coping joints and base flashing stops water from running down inside a parapet and showing up on interior walls.
A Clear Picture of the Field
Core cuts and a probe of each repair show how much of the roof is still dry, which helps you plan the budget for later years.
Water Sitting on the Roof Two Days After Rain?
Standing water past two days is the sign to act. We clear the drains and mark the pond outline so the low spot can be fixed.
Flat Roof Process
How a Flat Roof Repair Visit Goes
Flat roof repairs need dry, clean laps, so the steps run around the weather as much as around the roof.
- 1On The Roof
Inspect Your Roof
Every seam, curb, drain, and parapet gets a look, and the inspector probes laps and runs a test weld on older TPO before choosing the repair.
- 2Around The Building
Note Drains and Downspouts
Leaders and downspouts at ground level get checked for blockages, since a plugged leader backs water onto the roof like a clogged strainer.
- 3On The Roof
Weld, Tape, or Patch
Wet insulation comes out, then each seam, puncture, and blister gets the method that matches its membrane on a cleaned, dry surface.
- 4Around The Building
Watch the Low Spots
After the next rain, check the marked pond outlines. Water that clears within two days means the drain and slope fix is working.
Related Repairs
More Work From Your Nicholasville Flat Roof Repair Contractor
Flat roof problems often overlap with these two services.
Commercial Roof Leak Repair
When a drip shows up far from any visible seam, leak repair traces the water along deck flutes and insulation joints first.
Roof leak repair →
Industrial Roof Repair
Plant roofs with exhaust fans and heavy service traffic need flat roof repair planned around production and hot work rules.
Industrial roof repair →Flat Roof Questions
Flat Roof Repair Questions From Building Owners
How is flat roof seam repair done in Nicholasville, KY?
The method follows the membrane. TPO and PVC get heat welded, EPDM gets primer and seam tape, and modified bitumen gets a new cap sheet strip heated or adhered over the lap.
Older TPO sometimes refuses a new weld, which is why a test weld comes first. Long runs of failing seams point toward restoration or replacement.
Can blisters on a flat commercial roof be fixed?
Yes. On built-up and modified bitumen roofs, a blister gets sliced open, dried out, and patched with matching material. Small, firm blisters that stay closed are often left in place and watched.
Repair makes sense once a blister cracks, sits in a walking path, holds water, or merges with others into a wide bubble. A cluster of them points to trapped moisture under the cap sheet.
How do you stop ponding water on a flat roof?
Clear strainers, drain bodies, scuppers, downspouts, and leaders first. After the next rain, outline the standing water and add tapered insulation or a cricket in that low spot.
When water has no exit at all, an added drain or scupper goes in. Ponds that sit for more than two days wear the membrane faster and load the deck.
How is a puncture in a TPO or EPDM roof patched?
The membrane around the hole gets cleaned, and a patch with rounded corners is cut to reach past the damage on every side. TPO patches get hot-air welded and probed; EPDM patches get primer, factory tape, and a pressure roller.
Wet insulation under the puncture gets cut out and replaced first, so the patch keeps water out of the roof instead of sealing it in.
Why does a flat roof leak at the parapet wall?
Water gets in where the membrane turns up the wall or through joints in the coping cap along the top. Once inside the parapet, it runs down and appears at the roof edge or on an interior wall.
Parapet wall leak repair covers coping splice plates, loose base flashing, counterflashing and reglet sealant, masonry cracks, and scupper collars. A leak traced to the coping gets fixed at the cap, even when the stain shows at the base.
Hire a Nicholasville Flat Roof Repair Contractor
Tell us the membrane type if you know it and where water shows up inside. We will inspect the seams, drains, and parapets and explain the fix.