Old Bridge Roofing handles roof leak repair in Old Bridge, NJ, serving surrounding cities including South River, Aberdeen, South Amboy, Holmdel and Highland Park, after more than 20 years of chasing water through attics and across roofs. A leak is rarely where the stain is. Our work starts with finding exactly where water gets in, because a repair in the wrong place only moves the drip.
Every leak call includes a look in the attic as well as on the roof. From the attic, water marks on rafters and the underside of the deck show the path the water took. From the roof, we look at the flashing, boots and shingles uphill of that path until we find the opening.
Only then do we price the repair. You see photos of the cause from both sides and a written scope for fixing it. If the leak is a sign of a roof that is wearing out everywhere, we say so honestly rather than selling a repair that will not last.
Finding Where a Roof Leak Starts
Reading the Ceiling Stain
The shape and timing of a stain tell us a lot. A ring that grows after hard rain points to an opening in the roof, while a stain that appears on cold mornings or after showers points to condensation or a fan duct. Stains near exterior walls often trace back to flashing or ice dams at the eaves.
We ask when you first noticed it, which storms make it worse, and whether it drips or just spreads. Wind direction matters too, since wind-driven rain can push water under laps that shed ordinary rain. Those answers narrow the search before we climb a ladder.
Tracing the Water Path in the Attic
In the attic, we follow the water upstream. Stains run down rafters and trusses, darken the underside of the decking, and leave drip marks on insulation. Nail tips that are rusty or wet show where moisture has been sitting.
We follow the trail to its highest point, which is usually right under or just below the opening. From there, we can measure from a fixed point such as a vent pipe or chimney to locate the spot on the roof. That keeps us from tearing up shingles in the wrong place.
Water Testing a Suspected Spot
When the source is still unclear, we water test. One person runs a hose on a small section of the roof, starting low and working up, while another watches in the attic. Water appearing inside pinpoints the area that is letting it through.
Testing takes time, but it beats guessing. It is especially useful on chimneys and dormers, where several flashing details sit close together. Finding the one that fails means the repair goes where it is needed.
Common Roof Leak Sources
Chimney Flashing, Crowns and Crickets
Chimneys are the most common leak source we find. Step flashing is woven into the shingles along the sides, counter flashing is set into the mortar joints above it, and the two together keep water out. When the mortar ages and the counter flashing pulls loose, water runs behind it.
A cracked chimney crown or open mortar joints can also let water into the masonry, where it shows up inside as a leak. On wider chimneys, a missing cricket lets water pile up on the uphill side. We repair the flashing, crown or cricket as needed, and on a re-roof we always replace chimney flashing rather than reuse it.
Valleys and Sidewall Flashing
Valleys carry water from two slopes, so any gap in the valley lining or a nail placed too close to the center shows up quickly. Where a roof meets a wall, step flashing and the siding above it have to overlap correctly. A missing kick-out flashing at the bottom of a wall sends water behind the siding instead of into the gutter.
These leaks often show up inside as stains near a corner or along an exterior wall. Fixing them means lifting shingles and siding to correct the flashing, not caulking the outside. Done right, the water is turned back onto the roof surface.
Skylights and Vent Pipe Boots
Rubber pipe boots crack after years of sun, and the crack usually starts on the uphill side where it is hard to see from the ground. Skylights leak where the flashing fails, often at the upper corners, or when the unit’s seals break down. Both can leak steadily for months before the ceiling shows it.
We replace cracked boots with new pipe boots or lead flashing boots and reflash skylights where the unit is still sound. If a skylight is fogged and failing, replacing it is often the better choice. Some owners choose to remove a skylight they no longer want and close the opening.
Ice Dams Along the Eaves
Ice dams form when heat escaping into the attic melts snow higher on the roof, and the water refreezes at the cold eave. The ice holds back more meltwater, which backs up under the shingles and drips through. These leaks usually appear along exterior walls during or after a snowy spell.
Removing the ice is a short-term fix. The lasting answer is reducing heat loss into the attic through air sealing and insulation, and improving soffit and ridge ventilation. On a re-roof, ASTM D1970 self-adhering ice and water barrier along the eaves adds protection where ice dams have been a problem.
Leaks That Are Not the Roof
Attic Condensation and Fan Ducts
Bathroom and kitchen fans that vent into the attic instead of outdoors put warm, wet air onto the cold underside of the roof. In winter that moisture can frost on the nails and decking, then melt and drip on the first warm day. From inside the house it looks exactly like a leak.
We check where every fan duct ends and whether the attic is ventilated enough to clear moisture. Running a duct outdoors and balancing ventilation solves the problem without touching the shingles. Catching it saves you from paying for a roof repair that would not help.
Plumbing and HVAC Drips
A leaking pipe in an upstairs bathroom, a clogged air conditioner condensate line in the attic, or a sweating duct can all drip onto a ceiling. These leaks often show up regardless of the weather. If a stain appears on dry days, the roof is probably not the cause.
When we find signs that the water is coming from plumbing or mechanical equipment, we tell you plainly and point you to the right trade. Our job is to find the source, and sometimes the source is not ours to fix. Better that than a roof repair that leaves the drip running.
Gutters, Fascia and Siding
Water that overflows a clogged gutter, or runs behind a gutter because of missing drip edge, can soak the fascia and run into the wall. Gaps around windows and in siding can also let wind-driven rain into the wall, where it shows up inside as a leak near the ceiling. These are often blamed on the roof.
We check the gutter line, drip edge and fascia along with the roof. Correcting the drip edge and the gutter height, or resizing and repitching gutters and leaders, is often what stops a leak along an exterior wall. If the issue is a window or siding, we say so.
What Happens on a Leak Call
Protecting the House First
If the roof is open or water is coming in heavily, we tarp the area before anything else, fastened over the ridge and into solid framing so it holds in wind. Damage is photographed before it is covered. That record matters if you later file an insurance claim.
Showing You the Cause
You get photos of the problem from the roof and the attic and a plain explanation of what failed. If we found more than one issue, they are listed in order of urgency. The written scope shows exactly what will be replaced and what it costs.
Repairing and Confirming
We replace the failed flashing, boot or shingles, clean up the work area and gutters, and sweep for nails. After the next heavy rain from the same direction, check the attic and ceiling. If water is still getting in, we come back and keep looking until the leak is stopped.
- 20+ Years in Business
- Attic Checked on Every Leak
- Itemized Written Scopes