Roofer nailing down a patched section of a shingle roof, with the old shingles cut back around the repair and a roll of underlayment beside it
Mercer County, NJ

Roof repair in Mercer County, NJ

In a Trenton rowhouse, a leak often starts at the seam with the next roof. In a 1960s Hamilton or Ewing house, it is more often the chimney, a valley or a vent. We trace the water to the opening before we fix anything.

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Modern Home Roofing & Chimney repairs roof leaks across Mercer County, NJ, including Trenton, Hamilton, Ewing and Lawrence Township. On attached houses we start at the seam with the next roof. On detached houses we check the chimney flashing, the valleys and the vent boots. We are open 24 hours and give a written price. NJ HIC 13VH13268400.

Mercer County roofs

Where water gets into a Mercer County roof

1964Median year a Hamilton or Ewing house was built.
43%Of Trenton homes are attached houses. New Jersey: 10%.
60%Of Trenton homes built before 1960. New Jersey: 36%.
15+Days a year above 90 degrees in central New Jersey (15 to 20, per the State Climatologist).

Hamilton and Ewing both have a 1964 median, and about six in ten homes in each are detached houses. On a roof that age, the shingles in the middle are rarely what fails first. The flashing at the chimney, the valleys and the rubber boots around plumbing vents usually go sooner.

Trenton is a different roof. With 43 percent of homes attached, the seam where one roof meets the next is often where the water gets in, and the stain can turn up on a wall instead of a ceiling. If the opening is on the neighbor's side, we show you the photos and leave their roof to them.

The weather works on both. In winter, storms in the Central Zone often switch between rain and snow, and slush in the valleys and gutters freezes again overnight. In summer, 15 to 20 days above 90 degrees heat a dark roof well past the air temperature, and rubber vent boots dry out and crack.

So the wet spot on the ceiling is where we start, not where we patch. We find the opening, photograph it, and then tell you what the fix costs.

Before we fix it

What we check on a leaking Mercer County roof

Water runs sideways along the deck and down a rafter, so the stain and the opening rarely line up. The roof and the attic come first, and we follow the water back to its source.

Overhead view of a fully stripped roof covered in synthetic underlayment, with around twenty shingle bundles staged in a row along the ridge and tarps below catching the torn off shingles

On Mercer County houses, we look at

  • On an attached house, the seam with the next roof, and which side the opening is on.
  • The flashing at the chimney, and any tar smeared over it in an earlier repair.
  • Rubber vent boots, which summer heat dries out until they crack.
  • The valleys, where slush sits after a mixed storm.
  • The attic under the stain, for wet wood and the path the water took.
  • Lifted or missing shingles after a windy storm.
Roofer laying the first courses of new shingles over synthetic underlayment while two crew members work further along the roof

When patch sits on patch and the shingles around them are worn out, a repair stops making sense. We tell you when that is the case. Roof replacement in Mercer County

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Two kinds of Mercer County roof

Leaks on a rowhouse, leaks on a house that stands alone

Roof stripped to new plywood decking with a continuous slot cut along the ridge and crew members working near the peak
Trenton

Rowhouses and attached roofs

Fewer than one Trenton home in five stands by itself. On a row, the seam with the next roof and the flashing against a taller wall next door are the first places we look. A repair on an attached house usually goes through the town's construction office, and we check with Trenton before we start.

Hand at the ridge of a shingle roof lifting a bundle of loose low voltage wires that run across the shingles beside a vent
Hamilton and Ewing

Houses from the 1960s

Both towns have a 1964 median. Here a leak usually starts at the chimney, a valley or a vent boot, and the chimney flashing may already carry an old tar patch. On a detached one- or two-family house, the repair needs no construction permit.

If the flashing is sound but the brick above it is loose, the leak is a chimney job. Chimney repair in Mercer County

How it works

How a roof repair works in Mercer County

Finding the cause comes first, and your written estimate lists what we will fix and how long it will take. All six steps are on the roof repair page.

  1. We find where the water gets in

    We get on the roof when it is safe to, check the attic under the stain, and trace the water back to where it enters. You get the photos.

  2. Written estimate

    What is wrong, what we will fix and the price, on paper. If the roof is past repairing, we tell you that and show you why.

  3. We fix the cause

    New flashing, replaced shingles or a section of new underlayment. If the deck under it is soft, you get photos and a price before we replace it.

  4. Seal, clean up and show you

    New shingles get nailed and sealed to the ones around them. We run a magnet over the lawn for nails and go over photos of the repair with you.

Skylight set into an asphalt shingle roof with metal flashing around the frame and a stone chimney behind it
Low slope roof covered in black membrane, with a skylight set into it and rolls of membrane laid out
Aerial view of a completed architectural shingle roof on a two storey house
Crew member standing on a finished shingle roof with a ladder set to the ridge, surrounded by neighbouring houses and driveways

Do you need a permit for a roof repair in Mercer County?

On a detached one- or two-family house, no. New Jersey's construction code treats repairing the roof covering on a detached one- or two-family house as ordinary maintenance, so there is no permit and no notice to the town. A townhouse or other attached house usually goes through the town's construction office. Princeton has historic districts, where exterior work needs a preservation plan, though replacing a worn feature with the same material, color and size counts as ordinary maintenance. We check with your town before we start, and any permit goes on the estimate.

Before you hire anyone

What you can check on us first

  • Our New Jersey Home Improvement Contractor license is 13VH13268400. Look it up with the Division of Consumer Affairs.
  • We carry insurance and can send you the certificate before work starts.
  • The inspection is free, and the estimate comes to you in writing.
  • We are open 24 hours.

GAFOn roofing work, we are also GAF Certified. What GAF Certified means

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FAQ

Roof repair questions in Mercer County

Still not covered? Call 732-682-9251 and ask.

If it is in Mercer County, yes. We cover all 12 municipalities, from East Windsor to West Windsor. Put your ZIP code in the estimate form and we confirm it when we call you back.

Call us. We are open 24 hours. Often the first visit stops the water and protects the rooms below. The permanent repair follows when the roof is dry and safe to work on, and in winter that can mean waiting for a milder day.

That depends on which side the opening is on. We check the seam from your roof, photograph it, and tell you. If the gap is on your neighbor's side, the photos give you something to show them. We only work on a roof when its owner says yes.

It could. Water that gets in at the chimney flashing can run along the deck or a rafter for several feet before it drips. We follow it back in the attic and on the roof, so the repair goes where the water enters.

It depends on what let the water in and how much roof around it has to be opened. A cracked vent boot on a Hamilton house and a failed seam on a Trenton row are different jobs. We do not quote over the phone. You get a written price once we have found the opening.

A detached one- or two-family house needs no construction permit for it. New Jersey counts roof covering repairs on those houses as ordinary maintenance. On a rowhouse, a townhouse or a building of three or more units, the repair goes through the town's construction office. We check with your town before we start.

Call us, but check with your association first. In most condos the roof and the siding belong to the association, and the board hires the contractor. Townhouses vary. Your association documents say who owns what.

Aerial view of a roof replacement near completion, with crew members setting the final courses

Trace the leak before anyone patches it

Tell us your town and where the water shows up. We call you back shortly, inspect the roof for free, and give you photos of the opening and a written price. If patching no longer makes sense, we tell you that too.

Or call 732-682-9251

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