Repairing a Flat Roof with Bitumen in Queens
Repairing a flat roof with bitumen is what Flat Roofers NY does across Queens. We patch worn spots, re-seal seams and laps, and fix flashing on modified bitumen roofs.
Row houses, attached homes, storefronts, garage roofs, rear extensions. The estimate is free.
Want us to take a look?
Six signs worth a call
Any one of them is enough. Caught before the next Queens storm, it stays a small job.
Water still there two days after rain? Then fixing the ponding itself comes before any patch.
What to look for up there
- Blisters in the cap sheet
- Surface cracking
- Split seams or lifted laps
- Edges lifting at the parapet
- Granules worn off, dark felt showing
- Ponding water or a ceiling stain
What we fix on modified bitumen
Each one is matched to the sheet already up there.
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Patch repair
New base and cap sheet over a worn or cracked spot.
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Seam and lap repair
Open laps get cleaned, dried and bonded shut.
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Flashing repair
Rebuilt at the parapet wall and around the roof drain.
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Blister repair
Cut out, dried, patched flat.
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Leak repair and re-sealing
We find where water gets in and seal it. Water coming in right now gets an emergency visit.
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Partial re-roof
One failed section comes off and goes back down new.
Why repair it at all
It keeps water off your ceiling and out of the wiring.
The patch is the same modified bitumen as your base and cap sheet, so it fuses in.
Repairing a flat roof with bitumen buys years before a re-roof, even with Queens freeze-thaw and summer sun on a low-slope deck.
Once the base sheet is soaked, patching stops paying. Then check what a full replacement costs instead.
Three ways the new layer bonds
We pick by what sits around the damage.
| Compare | Our usual repairTorch-down | Cold-applied | Self-adhered |
|---|---|---|---|
| How it bonds | Torch heat melts it on | Cold bitumen and roofing cement | Membrane pressed onto primer |
| Best for | Seams and larger patches | Small patches, flashing details | Quick patches in tight spots |
| Where we use it in Queens | Open roofs, masonry parapets | Near wood trim and vents | Attached-home edges, no flame near wood |
| Walk on it | Once cooled | After it cures | Right away |
Four steps, in order
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Find the source
Seams, flashing and the drain get checked, since water often enters far from the stain.
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Clean, dry, prime
Loose granules and failed cement come off, then primer goes down.
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Build the layers
Reinforcing fabric or base sheet, then granulated cap sheet lapped past the damage.
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Seal and check
Laps and edges sealed, flashing checked before we leave.
Can you patch over old roofing cement and earlier patches?
Sometimes. Cracked or soft cement gets scraped off, since bitumen won't bond to it.
Can bitumen be repaired in cold Queens weather?
Yes. Torch-down works in the cold. We won't patch over ice or a wet deck.
How is a bitumen repair priced?
By the area and the details involved, like flashing or a drain. Here's how repairs are priced by the foot.
When does a partial re-roof make more sense than patching?
When one section keeps leaking or its base sheet is wet. Patching just traps that water.
Get the roof priced
Tell us what you're seeing up there. We'll price the repair free.
Rather talk it through? Call:
Call Flat Roofers NY(917) 473-9811