Flat Roof Repair in Hudson County, NJ

Flat Roof Specialist · 23+ Years · Open 24/7

Flat Roof Repair in Hudson County, NJ

Leaks, ponding water, failed flashing, split seams — we repair flat roofs every week across Union City, Jersey City, Hoboken, North Bergen, West New York, Weehawken, and Bayonne. Family-owned, 23+ years, and the owner inspects every roof we quote. Call 201-638-8556 for a same-day or next-day inspection.

Flat roof repair in Union City, NJ — Gaby Roofing Flat Roof Specialist

The Flat Roof Repairs We Handle Most

Hudson County’s housing stock is overwhelmingly flat-roofed — row homes, brownstones, multifamilies, and mixed-use buildings, most with modified bitumen (torch-down) membranes. After 23+ years working on these exact roofs, the failure points are predictable:

Active Leaks & Water Stains

A ceiling stain rarely sits directly below the entry point — water travels along the deck before it drips. We trace the leak on the roof, not by guessing from the ceiling, and repair the actual entry point: a torch-down patch heat-welded into the existing membrane, not a smear of roof cement that fails next season.

Parapet Walls & Flashing

The most common leak source on Hudson County row homes isn’t the field of the roof — it’s the parapet walls and the flashing where the membrane turns up against them. Cracked coping stones, open mortar joints, and pulled-away flashing let water in behind the membrane. We re-flash parapets with modified bitumen turned up and terminated correctly.

Ponding Water

Water still standing 48 hours after rain shortens any membrane’s life. Depending on severity we correct ponding with drainage improvements, tapered patching, or a silicone restoration system rated for ponding water. More on silicone coating →

Seams, Blisters & Splits

Torch-down seams open with age and thermal movement; trapped moisture forms blisters that eventually crack. We cut out and re-weld failed sections with matching Firestone SBS-modified bitumen so the repair moves with the roof instead of against it.

Drains, Scuppers & Gutters

Clogged or rusted-out drains and scuppers back water up under the membrane. We clear, re-flash, or replace roof drains and through-wall scuppers — a small repair that prevents a full-roof failure.

Repair, Restore, or Replace? We’ll Tell You Straight.

Not every leak needs a new roof — and not every roof should keep absorbing repairs. NJ’s reroofing code has a threshold (the 25% rule) where accumulated repair work triggers a full-replacement obligation. We inspect on-site, photograph what we find, and tell you exactly where your roof stands: a targeted repair, a silicone restoration at roughly half the cost of replacement, or a full torch-down replacement. Read about the 25% rule →

How a Repair Call Works

  1. Call or request online. Active leak? We prioritize same-day. Otherwise we’re on your roof within 48 hours.
  2. On-roof diagnosis. We trace the leak at the source, photograph everything, and check parapets, flashings, seams, and drains while we’re up there.
  3. Written line-item estimate. You see exactly what’s failing and what the fix costs — no over-the-phone guesses, no upselling a replacement you don’t need.
  4. Repair done right. Heat-welded modified bitumen patches, proper flashing terminations, and photos of the finished work.
Roof drain with dome strainer on a flat roof in Union City, NJ — drain repair by Gaby Roofing

Flat Roof Repair Across Hudson County

Union City & West New York

Our home turf — we’re based at 4404 Kennedy Blvd. The attached row homes along Bergenline and the side streets share parapet walls, which means a neighbor’s neglected roof can leak into yours. We know these party-wall details and repair them correctly. Union City roofing → · West New York roofing →

Jersey City

From Heights row homes to Downtown brownstones and Journal Square multifamilies — Jersey City’s mix of roof ages means everything from 5-year-old seam repairs to 40-year-old built-up roofs overdue for replacement. We repair what’s repairable and document what isn’t. Jersey City roofing →

Hoboken

Brownstone flat roofs with roof decks, skylights, and HVAC penetrations — every penetration is a potential leak. Tight access and shared walls make Hoboken repairs a staging problem as much as a roofing problem; we handle both. Hoboken roofing →

North Bergen, Weehawken & Guttenberg

Hilltop exposure along the Palisades means these roofs take more wind-driven rain than most of the county. Flashing and coping failures show up here first. North Bergen roofing → · Weehawken roofing →

Bayonne

Row homes plus the industrial and warehouse corridor — larger membrane fields, roof drains instead of scuppers, and commercial-scale repairs. Bayonne roofing →

Flat Roof Repair FAQ

How much does flat roof repair cost in Hudson County?

Small single-point repairs (a seam weld, a pipe flashing) are the least expensive work we do; parapet re-flashing and drain replacement cost more; widespread membrane failure usually makes restoration or replacement the smarter spend. Because pricing depends on what we find on the roof, we give a written line-item estimate after an on-site inspection — free, within 48 hours.

Can you repair a torch-down roof someone else installed?

Yes. Most of our repair work is on roofs other contractors installed. We heat-weld matching modified bitumen into the existing membrane so the repair bonds permanently instead of sitting on top.

Is it worth repairing an old flat roof, or should I replace it?

If the membrane is structurally sound and dry underneath, repairs and silicone restoration can add 10–15 years of life at a fraction of replacement cost. If the insulation is saturated or repairs would exceed NJ’s 25% threshold, replacement is required by code — and cheaper in the long run. We tell you which side of the line you’re on, with photos.

Do you do emergency leak repairs?

Yes — 24/7 across Hudson County. Temporary waterproofing, tarping, and drain clearing to stop active water intrusion, then a permanent repair once conditions allow. See our emergency roof repair page or call 201-638-8556 now.

Get Your Flat Roof Repaired Right

48-hour inspections. Written line-item pricing. Repairs that are heat-welded into the roof, not smeared on top. 155+ Google reviews, 4.9 stars.