Leak Detection & Repair
Roof Leak Repair in Long Island, NY & New Jersey
That stain on your ceiling is rarely where the leak starts. We track water back to its true source and fix the cause — not just the symptom.
Find It, Then Fix It
Why leaks are tricky
Water travels. It can enter at a failed flashing or a single lifted shingle, run along the roof deck or a rafter, and show up several feet away on your ceiling.
That’s why a guess-and-patch approach so often fails. Mariani Roofing inspects the roof, flashing, valleys, and penetrations to find the real entry point, then makes a lasting repair. If the roof has multiple failures, we’ll be honest about whether replacement is the smarter long-term move.
Usual Suspects
Common sources of roof leaks
Failed Flashing
Around chimneys, walls, valleys, and skylights — the #1 cause of leaks.
Damaged Shingles
Cracked, lifted, or missing shingles letting water under the surface.
Skylight & Vent Seals
Worn seals around roof penetrations.
Clogged Gutters
Backed-up water forced under the roof edge.
Ponding on Flat Roofs
Standing water finding seams. Flat roofing →
Aging Roof
A worn-out roof that has simply reached the end of its life.
Leaking right now?
If water is actively coming in, don’t wait for a form — call (347) 400-9473 for emergency roof repair. Fast action limits interior damage.
Catching leaks early
- Ceiling or wall stains, especially after rain
- Musty smells or peeling paint
- Dampness or daylight in the attic
- Drips during or after storms
- Bubbling on flat-roof membranes
- Granule loss and worn flashing
Leak Repair FAQ
Roof leak questions
Can you find a leak even if you can’t see it?
Yes. We trace water back from the interior stain and inspect the likely entry points on the roof — flashing, valleys, penetrations, and shingles — to locate the true source.
Is a leak always a sign I need a new roof?
No. Many leaks are isolated and fixable with a targeted repair. We only recommend replacement when the roof has widespread problems.
How soon can the leak be fixed?
For emergencies we can stop active water intrusion quickly, then schedule the permanent repair. Call (347) 400-9473.
Stop the leak at the source
Call Mariani Roofing for leak detection and repair across Long Island, NYC, and New Jersey.