Residential & Commercial Roofing
Professional Roofing Contractor Serving Long Island, New York & New Jersey
Roof repairs, replacements, leak detection, storm damage service, flat roofing, and emergency roofing solutions for homes and businesses.
- Residential & commercial roofing
- Roof repair & replacement
- Emergency leak response
- Serving Long Island, NYC area & New Jersey
- Free estimate available
Roof Emergency?
Need Roof Repair Fast?
Active leaks, storm damage, missing shingles, or water coming through the ceiling can’t wait. The longer water sits, the more it costs — damaging insulation, drywall, and framing. Call now and we’ll move quickly to stop the damage and protect your property.
What We Do
Roofing Services for Every Roof
From a single leak to a full replacement, Mariani Roofing handles the roofing problems homeowners and property owners face across the Northeast.
Roof Repair
Targeted fixes for leaks, damaged shingles, flashing, and worn roof sections.
Learn more →Roof Replacement
Full tear-off and new roof installation when repairs no longer make sense.
Learn more →Emergency Roof Repair
Fast response for active leaks and sudden storm damage.
Learn more →Roof Leak Detection
Tracking down the true source of a leak — not just the stain on the ceiling.
Learn more →Shingle Roofing
Asphalt and architectural shingle installation and replacement.
Learn more →Flat Roofing
Flat and low-slope roof repair and replacement for homes and businesses.
Learn more →Commercial Roofing
Roofing service for storefronts, offices, and commercial buildings.
Learn more →Residential Roofing
Roofing built for Northeast homes and the weather they take.
Learn more →Storm Damage Repair
Wind, hail, and storm damage assessment and repair.
Learn more →Gutter & Roof Edge
Roof edge, fascia, and drainage issues that lead to leaks.
Learn more →Skylight Leak Repair
Sealing and repairing leaks around skylights and roof penetrations.
Learn more →Roof Inspection
Honest assessment of your roof’s condition and remaining life.
Learn more →Why Mariani Roofing
Roofing Done Right, Explained Clearly
You shouldn’t need to be a roofer to understand what your roof needs. We keep it straightforward.
Clear Communication
Straight answers about what’s wrong, your options, and what we recommend — no pressure.
Repair-First When Possible
If a repair will solve the problem, we’ll say so instead of pushing a full replacement.
Local Service Areas
We know Northeast roofs and the weather they face across Long Island, NYC, and New Jersey.
Clean Job Sites
We protect your property and clean up thoroughly, including nail and debris cleanup.
Responsive Scheduling
We show up when we say we will and keep you updated through the project.
Durable Materials & Workmanship
Quality materials installed properly — because a roof is only as good as its installation.
Sound Familiar?
Common Roofing Problems We Solve
Roof Leaks
Water stains, drips, or active leaks during rain.
Missing Shingles
Shingles blown off or cracked after wind and storms.
Damaged Flashing
Failed metal flashing at chimneys, walls, and valleys.
Storm Damage
Wind, hail, and falling-branch damage to the roof surface.
Ponding Water
Standing water on flat or low-slope roofs that won’t drain.
Clogged Gutters & Edges
Backed-up drainage causing roof-edge and fascia rot.
Aging Roof Systems
Old roofs near the end of their service life.
Skylight Leaks
Water intrusion around skylights and roof penetrations.
Ventilation Problems
Poor attic ventilation shortening the life of your roof.
For Homeowners
Residential Roofing
Your roof is the first line of defense for everything underneath it. We help homeowners across Long Island, Queens, Brooklyn, Staten Island, and New Jersey keep their roofs sound — with honest repairs, careful replacements, and clear advice on what your roof actually needs.
- Asphalt & architectural shingle roofing
- Leak repair and roof-section replacement
- Storm and wind damage repair
- Full roof replacement when it’s time
For Property Owners
Commercial Roofing
Property managers, landlords, and small business owners count on us for flat and low-slope roofing that keeps tenants dry and operations running. We handle leaks, ponding water, membrane repairs, and full commercial roof replacement with minimal disruption.
- Flat & low-slope commercial roofs
- Leak and ponding-water solutions
- Storefronts, offices & multi-unit buildings
- Scheduled around your business
Where We Work
Serving Long Island, NYC & New Jersey
We’re a service-area roofing contractor — we come to you across the Tri-State region. Choose your area for local roofing details.
Simple & Straightforward
How It Works
Call or Request an Estimate
Tell us what’s going on with your roof by phone or through our form.
Roof Inspection
We inspect the roof and find the real source of the problem.
Clear Recommendation
You get a straight explanation and a written estimate — repair or replace.
We Get to Work
We complete the work cleanly and leave your property tidy.
Roofing Service Imagery
The Work We Do
A look at the roofing details and problems we handle every day. Service imagery
See more roofing imagery → Licensed stock imagery used to illustrate services — not represented as specific Mariani Roofing projects.
Roofing FAQ
Questions Homeowners Ask
Do I need a roof repair or a full replacement?
It depends on the roof’s age, the extent of the damage, and whether the problem is isolated or widespread. A localized leak on a relatively young roof is usually a repair; widespread wear, multiple leaks, or an aging roof often points to replacement. We’ll inspect and give you an honest recommendation. More on roof repair →
My roof is leaking right now — what should I do?
Move valuables away from the water, place a bucket, and if safe, contain the drip. Then call (347) 400-9473 for emergency roof repair. The faster a leak is addressed, the less interior damage you’ll face.
Do you serve both homes and businesses?
Yes. We handle residential roofing and commercial / flat roofing across Long Island, NYC, and New Jersey.
How much does a new roof cost?
Cost depends on roof size, slope, material, number of layers to remove, and access. We don’t quote a real price without seeing the roof — but the estimate is free and the figure is in writing. Roof replacement cost factors →
What areas do you cover?
Long Island (Nassau & Suffolk), Queens, Brooklyn, Staten Island, and New Jersey. See all service areas.
Let’s Protect Your Roof
Need a Roofer in New York, Long Island, or New Jersey?
From roof leaks and missing shingles to full roof replacement, Mariani Roofing helps homeowners and property owners protect their properties with professional roofing service and clear communication.