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Roof Leak Repair in New Jersey

A water stain on the ceiling is where a leak ends, not where it starts. We trace roof leaks to the real source and fix them for good, with a fixed written price before we start.

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Overview

Roof leak repair in NJ starts with the source

Roof leak repair is mostly detective work. Water gets in at one spot, runs along the underlayment or a rafter, and shows up as a water stain on the ceiling somewhere else, often several feet away. Patch the spot under the stain and the leak comes back. We fix roof leaks across New Jersey by finding where the water actually gets in, then repairing that detail properly, with a fixed written price before the work starts.

Roof leak detection starts in the attic, where the water trail is easiest to follow: stained sheathing, damp insulation, rusty nail tips. Then we check the roof above it, detail by detail. When the source still is not obvious, we water-test the likely spots one area at a time until the ceiling tells us which one it is. It takes longer than guessing, and it is the only way a repair holds.

Most leaks come from the same handful of places. A chimney leak is usually failed step or counter-flashing, or a cracked crown. A skylight leak is usually its flashing kit or a broken seal. A leak around a vent pipe is almost always a cracked rubber boot. Valleys carry more water than any other part of the roof and wear out first. And a leak after heavy rain, especially wind-driven rain, points to flashing that sheds ordinary rain but lets water blow in sideways.

Most roof leaks are repairs. If the roof is sound and the leak has one source, fixing that source is the right call, whether it means new flashing, a new boot or a rebuilt valley. When a roof leaks in several places at once, or the shingles are worn out across the whole surface, patching one leak just moves the problem, and it is time to price a roof replacement alongside the repair.

Some leaks lead to bigger work. A chimney leak often needs masonry too, which our chimney repair page covers; a skylight past its life needs a skylight replacement; and a winter leak at an outside wall is often an ice dam, which is an attic ventilation problem as much as a roofing one. Everything else we fix is on our roof repair page.

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  • $400–$1,500Typical leak diagnosis and patch in NJ
  • Attic firstEvery leak traced from the inside out
  • 1 visitMost leak repairs finished in a single trip
  • 10 yearsWorkmanship guarantee, in writing
What's included

Where roof leaks come from, and how we fix them

  • Chimney leaksStep and counter-flashing rebuilt, crowns sealed and caps replaced where the water is getting in.
  • Skylight leaksFlashing kits and seals checked, then re-flashed, or the unit replaced if it is past saving.
  • Leaks around vent pipesCracked rubber boots replaced with longer-lasting ones, and loose box and exhaust vents re-sealed.
  • Valley leaksWorn valley metal and shingles rebuilt with leak barrier underneath, where the most water runs.
  • Wall and dormer flashingStep flashing re-woven where the roof meets a wall or dormer, the classic wind-driven rain leak.
  • Missing and damaged shinglesBlown-off, cracked and lifted shingles replaced and sealed so the field sheds water again.
  • Roof leak detectionAttic checks and area-by-area water testing to find leaks that do not show from outside.
How it works

How we find and fix a roof leak

  1. 01

    Attic check

    We follow the water trail from the stain back up to the underside of the roof.

  2. 02

    Roof check

    Every flashing, boot, valley and seam above the trail is checked, and suspect spots are water-tested one at a time.

  3. 03

    Written price

    You see photos of the source and get a fixed written price for the fix before we start.

  4. 04

    Fix and test

    We repair the source, test it where we can, and back the work with our 10-year workmanship guarantee.

Where leaks get fixed

Chimneys, skylights, vent pipes and walls: the places water actually gets in, photographed by our own crews. Tap any photo to see it full size.

Our work

Recent roof leak repair projects across NJ

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Roofing in Englewood, NJ

Roofing in Englewood

Bergen County · NJ

View Englewood roofing
Roofing in Fort Lee, NJ

Roofing in Fort Lee

Bergen County · NJ

View Fort Lee roofing
Roofing in Morristown, NJ

Roofing in Morristown

Morris County · NJ

View Morristown roofing
Roofing in Tenafly, NJ

Roofing in Tenafly

Bergen County · NJ

View Tenafly roofing
Roofing in Paramus, NJ

Roofing in Paramus

Bergen County · NJ

View Paramus roofing
Roofing in Montclair, NJ

Roofing in Montclair

Essex County · NJ

View Montclair roofing
Warning signs

Signs of a roof leak

  • A water stain on a ceiling or high on a wall
  • Drips after heavy rain or wind-driven rain
  • Damp or matted insulation in the attic
  • Peeling paint or bubbling drywall near the ceiling
  • A musty smell or mold in the attic or an upstairs closet
  • Stains around a chimney, skylight or vent pipe
When to call us

Spotting these signs? Get a roof leak repair estimate before it gets worse.

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More services
View all services
Roof Repair in New Jersey

Roof Repair

Leak patching, missing shingles, flashing fixes.

See Roof Repair
Chimney Repair in New Jersey

Chimney Repair

Crowns, flashing, and masonry repair.

See Chimney Repair
Skylight Replacement in New Jersey

Skylight Replacement

New skylight installs and full-unit replacements.

See Skylight Replacement
Read more

Guides on roof leaks

Browse all roofing articles
Roof flashing in NJ: types, installation, and why it matters

Roof flashing in NJ: types, installation, and why it matters

The thin strips of metal you barely notice are doing most of the work keeping water out of your house.

Read: Roof flashing in NJ: types, installation, and why it matters
Roof repair prices in 2026: what NJ homeowners actually pay

Roof repair prices in 2026: what NJ homeowners actually pay

Real price ranges for the most common roof repairs, plus what drives the number up or down.

Read: Roof repair prices in 2026: what NJ homeowners actually pay
How to prevent ice dams on a New Jersey home

How to prevent ice dams on a New Jersey home

Ice dams are an attic problem, not a roof problem. Here is why they form, the fix that actually lasts, and what never to try yourself.

Read: How to prevent ice dams on a New Jersey home
Where we work

Where we do roof leak repair in NJ

From our Englewood headquarters we work across 12 New Jersey counties. Pick yours for local housing, weather and permit notes.

All service areas
Roof estimate

Need roof leak repair in New Jersey?Get a fixed-price estimate from a licensed local roofer, no obligation.

Request an Estimate (201) 908-0002
FAQ

Roof leak repair in NJ: common questions

Usually because a flashing detail has failed, not the shingles themselves. The most common sources are chimney flashing, skylight flashing, cracked vent pipe boots, worn valleys and missing or lifted shingles, plus ice dams in winter. Age makes all of them more likely, but even a newer roof leaks if one detail was installed wrong.
Start in the attic with a flashlight during or right after a rain. Look for wet or stained sheathing, damp insulation and water on the rafters, then follow the trail uphill, because water runs down the roof before it drips. The entry point is often feet above the stain on your ceiling. If you cannot find it, or cannot get into the attic safely, that is the job we do.
Water coming through a ceiling, a sagging wet ceiling or water near electrical fixtures needs attention now, and those calls go to the front of our schedule. A small stain that only appears after heavy rain is less urgent, but it is worth fixing soon, because every rain adds to damage you cannot see.
Most leak repairs in New Jersey cost $400–$1,500 for the diagnosis and the fix, because finding the source is half the job. Bigger fixes run higher: rebuilding chimney flashing is typically $800–$2,500 and a valley repair $700–$2,200. Our roof repair prices guide has the full list, and you get a fixed written price before we start.
Because a flashing detail sheds ordinary rain but not driving rain. Wind pushes water sideways and uphill, under step flashing, counter-flashing and the edges of shingles that have lost their seal. Leaks that only show up in storms almost always trace back to a chimney, a wall or a dormer.
Often, but not always. A stain on a top-floor ceiling or near an outside wall that appears after rain usually is the roof. A stain under a bathroom, or one that grows without rain, is more likely plumbing or condensation. Check the attic above the stain: if the wood there is wet or stained, it is the roof.
Usually, yes. A single leak on a sound roof is a repair. It is only when leaks keep showing up in different places, or the shingles are worn out everywhere, that repairs stop being worth the money, and we will tell you which one you are looking at, with photos.
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