Flat & Low-Slope Roofing
Flat Roof Repair & Replacement in Long Island, NY & NJ
Flat and low-slope roofs need a different approach than pitched roofs. We repair leaks, solve ponding water, and replace failing flat roofs for homes and businesses.
Specialized Work
Flat roofing for homes & buildings
Flat roofs are common on commercial buildings, extensions, porches, and many city homes — and they fail in their own particular ways.
Mariani Roofing repairs and replaces flat and low-slope roofs across Long Island, NYC, and New Jersey, addressing the seams, flashing, and drainage issues that cause most flat-roof leaks. Whether it’s a small membrane repair or a full replacement, we’ll find the problem and give you a straight recommendation.
- Flat & low-slope leak repair
- Ponding-water & drainage solutions
- Membrane repair & full replacement
- Residential & commercial flat roofs
Watch For
Common flat roof problems
Ponding Water
Standing water that won’t drain and eventually finds a seam.
Open Seams & Blisters
Lifted seams and bubbles in the membrane that let water in.
Failed Flashing
Edges, drains, and penetrations that have lost their seal.
Cracking & Aging
Membranes that have dried out and cracked over time.
Drain Clogs
Blocked roof drains and scuppers backing up water.
Punctures
Foot traffic, debris, or equipment damaging the surface.
Flat Roofing FAQ
Flat roof questions
Why does my flat roof keep leaking?
Most flat-roof leaks come from seams, flashing, and poor drainage rather than the field of the membrane. We find and address the actual failure point instead of repeatedly patching.
Can a flat roof be repaired, or does it need replacing?
If the membrane is generally sound and the problem is localized, repair is often enough. Widespread cracking, saturation, or repeated failures point to replacement.
Do you handle commercial flat roofs?
Yes — see commercial roofing for storefronts, offices, and multi-unit buildings.
Flat roof giving you trouble?
Call Mariani Roofing for flat roof repair or replacement across Long Island, NYC, and New Jersey.