GAF-certified roofing contractor serving all of Nassau and Suffolk County. Shingle, metal, flat, cedar shake, gutters, repair and full replacement — every roofing need, one trusted team.
Our Roofing Work
Tear-off through final nail. These are our own Nassau and Suffolk County roofing jobs — full removal, new decking, and finished installation.
Architectural and premium shingles — the most popular roofing choice on Long Island. Installation, repair, and replacement.
Standing seam and metal panel roofing — the longest-lasting option. 40–70 year lifespan. Ideal for Long Island's storm exposure.
TPO and EPDM flat roofing for low-slope roofs — garages, additions, and commercial roofing sections.
Authentic wood shake installation and restoration for Long Island's character homes across Nassau and Suffolk County.
Seamless gutter installation, replacement, guards, and cleaning across Long Island.
From a single missing shingle to major storm damage — fast, lasting repairs by GAF-certified technicians.
Complete roof replacement with premium materials, manufacturer warranties, and full insurance claim handling.
Asphalt shingles typically run 20 to 30 years, with GAF's Timberline line carrying a lifetime materials warranty when installed by a certified contractor. Standing seam and metal panel roofing typically run 40 to 70 years and holds up best against Long Island's salt air and wind-driven rain. Flat TPO roofing typically runs 20 to 25 years, EPDM 15 to 25 years. Cedar shake typically runs 25 to 30 years with regular maintenance, less near direct salt spray. These are industry-typical ranges, not a warranty. Actual lifespan depends on ventilation, installation quality, and exposure.
Greene Group Construction Corp. is a GAF-certified roofing contractor serving every community in Nassau and Suffolk County. GAF certification means our crews meet factory training standards and our installations carry manufacturer-backed warranties that standard contractors can't offer.
We've replaced and repaired over 500 Long Island roofs. We know the specific challenges Long Island homes face — the salt air corrosion along the South Shore, the ice dam risks in the North Shore woodlands, the hurricane exposure of the East End, and the wind-driven rain that tests every flashing joint and valley on the Island.
Long Island roofs face a wind exposure most of the country doesn't deal with. Nassau and Suffolk County fall in a 115 to 130 mph design wind zone under ASCE 7-22, and homes on direct ocean or sound frontage land at the higher end of that range. Wind and hail aren't a rare event here, they're the single largest cause of homeowners insurance claims nationally: 40.7% of all claims, according to Insurance Information Institute analysis of ISO claims data covering 2018 through 2022, published December 2023. The average wind and hail claim paid out $13,511 over that period. We build every roof to hold up against that exposure, not a generic national minimum, and we document every inspection with photos whether or not you plan to file a claim.
New York's residential building code also requires an ice and water shield membrane along the eaves of every asphalt shingle roof in any part of the state with a history of ice damming, which includes Long Island, extending from the roof edge to a point inside the exterior wall line. That requirement traces back to a provision that has been part of the International Residential Code for two decades and was carried into New York's Uniform Code. It's an easy step to skip on a fast reroof, and it's the difference between a roof that handles a February freeze-thaw cycle and one that backs water up under the shingles.
This is general information, not engineering or code advice. Wind design pressures and current code requirements depend on your specific address and should be confirmed with a licensed engineer or your local building department before you rely on them for permit purposes.
Storm damage on Long Island rarely looks dramatic from the ground. A nor'easter can lift a dozen shingles, pop nails along a ridge, or tear flashing loose around a chimney without ever leaving a hole you can see from the driveway. Water finds those gaps on the next heavy rain, and by the time it shows up as a stain on a ceiling, it may have already been traveling along the rafters for weeks. We inspect the whole roof after any named storm or wind event, not just the spot a homeowner points to, and we photograph everything before we touch it. That documentation is what gets a legitimate claim approved without a fight.
If your roof was damaged by a storm, we handle the entire insurance claim — documentation, adjuster meeting, supplement filing, and all paperwork. Most storm-damaged roofs are replaced at little or no out-of-pocket cost to the homeowner.
GAF certification isn't one tier, it's three, and the warranty a contractor can offer depends on which one they hold. System Plus requires a GAF Certified, Certified Plus, or Master Elite contractor and covers materials plus tear-off and disposal, no workmanship. Silver Pledge requires Certified Plus or Master Elite and adds 10 to 15 years of workmanship coverage. Golden Pledge, the strongest tier, is available only through a Master Elite contractor and covers materials, tear-off, disposal, and workmanship for 25 to 30 years, non-prorated. A non-certified contractor cannot offer any of the three, regardless of what materials they install.
From Valley Stream to Montauk — every community in Nassau and Suffolk County. That coverage isn't just Nassau and Suffolk on paper. We've put crews on roofs from the North Shore's ice-dam-prone woodlands in places like Huntington and Port Jefferson, to the South Shore's salt air corridor through Massapequa, Babylon, and Long Beach, to the East End's full hurricane exposure out past Riverhead and Southampton. Each of those environments stresses a roof differently, and a crew that only works one part of the Island tends to install the same roof everywhere. We don't.
A roof doesn't fail all at once, it fails at the seams. Flashing around chimneys, skylights, and vent pipes is where the overwhelming majority of leaks start, not the shingle field itself. We recommend a roof inspection after any major storm and at least once every two to three years otherwise, especially on a roof past its 15-year mark. Catching a lifted shingle or a cracked pipe boot before a rainstorm finds it is the difference between a $200 repair and a $4,000 ceiling and insulation replacement. If you're not sure how old your roof is or when it was last inspected, that's a free call, not a sales pitch.
Detailed, written estimates at no cost. We itemize everything — materials, labor, disposal, and any additional work. No surprises on the final invoice.
| GAF Warranty Tier | Contractor Required | Coverage |
| System Plus | Certified, Certified Plus, or Master Elite | Materials, tear-off, and disposal. No workmanship coverage. |
| Silver Pledge | Certified Plus or Master Elite | Materials, tear-off, disposal, plus 10 to 15 years workmanship. |
| Golden Pledge | Master Elite only | Materials, tear-off, disposal, plus 25 to 30 years workmanship, non-prorated. |
Shingle roofs run $9,000 to $18,000. Metal roofing runs $18,000 to $35,000. Flat roofing runs $4,000 to $12,000. Those are our planning ranges for a typical single-layer tear-off and replacement on an average Long Island home, and every estimate we give is itemized and specific to your roof, not pulled from a chart.
For comparison, JLC's 2025 Cost vs. Value Report puts the average asphalt shingle roofing replacement job in the Middle Atlantic region at $37,201, recouping 58.3% at resale, down from 67.5% the year before. That figure runs well above our typical Long Island range because the Cost vs. Value survey benchmarks a larger home with full disposal and complexity built into the model. It's a useful ceiling to know about, not a quote for your house.
Material costs are also moving. Section 232 tariffs on imported steel and aluminum stood at 50% as of early 2026 and were unaffected by a February 2026 Supreme Court ruling on a separate set of tariffs, according to roofing trade press reporting. That adds real cost to metal roofing, flashing, gutters, and fasteners, and manufacturer price increases from GAF, Owens Corning, and Johns Manville followed in April 2026. It has less effect on asphalt shingles, which are petroleum and fiberglass based rather than metal. We build current material pricing into every estimate rather than quoting last year's numbers.
The biggest lever on what you actually pay, though, is usually insurance, not the material tier. If your roof was damaged by wind, hail, or a fallen limb, most or all of a shingle replacement is typically covered, and we handle the documentation, adjuster meeting, and supplement filing so nothing legitimate gets denied for lack of paperwork.
This is general information, not insurance or tax advice. Your specific policy, your adjuster's determination, and current tariff rates can all change, so confirm the numbers that matter to your project before you rely on them.
| Material | Typical Long Island Cost | Typical Lifespan |
| Asphalt shingle | $9,000 – $18,000 | 20 – 30 years |
| Metal (standing seam / panel) | $18,000 – $35,000 | 40 – 70 years |
| Flat (TPO / EPDM) | $4,000 – $12,000 | 15 – 25 years |
| Cedar shake | Quoted per project | 25 – 30 years |
"Greene Group replaced our entire roof after storm damage. They handled everything with our insurance — we paid almost nothing out of pocket. Professional crew, perfect cleanup, incredible result."
"Called at 7am after finding a leak. They were on my roof by 9am, diagnosed the flashing failure immediately, and repaired it same day. You don't get that kind of service anymore."
"Got three quotes. Greene Group's GAF certification and the warranty they could offer made it a no-brainer. Two years later the roof has been through two nor'easters without a problem."
Most Long Island roof replacements take 1 to 2 days for an average-sized home. Larger roofs or complex designs may take 2 to 3 days. We complete the full tear-off, deck inspection, and new installation in a single visit when possible.
If your roof was damaged by a storm, wind, or hail, your homeowners insurance typically covers most or all of the replacement cost. Greene Group handles the entire claims process, and most storm-damaged roofs are replaced at little or no out-of-pocket cost. This is general information, not insurance advice. Coverage depends on your specific policy, and your adjuster makes the final coverage determination.
GAF certification means our crews completed factory training and our installations can qualify for GAF's enhanced warranties. System Plus requires a GAF Certified, Certified Plus, or Master Elite contractor and covers materials plus tear-off and disposal, no workmanship. Silver Pledge requires Certified Plus or Master Elite and adds 10 to 15 years of workmanship coverage. Golden Pledge, the strongest tier, requires a Master Elite contractor and covers materials, tear-off, disposal, and workmanship for 25 to 30 years, non-prorated. A non-certified contractor cannot offer any of the three.
Shingle roofs run $9,000 to $18,000. Metal roofing runs $18,000 to $35,000. Flat roofing runs $4,000 to $12,000. Those are our planning ranges for a typical single-layer tear-off and replacement. For comparison, JLC's 2025 Cost vs. Value Report puts the average asphalt shingle roofing replacement job in the Middle Atlantic region at $37,201, reflecting the survey's benchmark project, which assumes a larger home with full disposal costs built in. We provide free, itemized written estimates for your actual roof, not a regional average.
Yes, every community from Valley Stream to Montauk. We have crews across Long Island for fast response times whether you're in Hempstead, Babylon, Huntington, or Riverhead.
Nassau and Suffolk County fall in a 115 to 130 mph design wind zone under ASCE 7-22, with the higher end applying closest to open ocean and sound-facing exposure. The exact wind pressure your roof needs to withstand depends on your address, elevation, and exposure category, and for permit purposes it should be calculated or confirmed by a licensed engineer. We install shingles and fastening patterns rated for Long Island's wind exposure, not a generic national minimum.
Wind and hail were the largest single cause of homeowners insurance claims nationally, 40.7% of all claims, according to Insurance Information Institute analysis of ISO claims data covering 2018 through 2022, published December 2023. The average wind and hail claim paid out $13,511 over that same period. Long Island's coastal exposure puts it squarely in that risk category, which is why we document every inspection with photos whether or not you plan to file a claim.
Asphalt shingles typically run 20 to 30 years, with GAF's Timberline line carrying a lifetime materials warranty when installed by a certified contractor. Standing seam and metal panel roofing typically run 40 to 70 years and holds up best against Long Island's salt air and wind-driven rain. Flat TPO roofing typically runs 20 to 25 years, EPDM 15 to 25 years. Cedar shake typically runs 25 to 30 years with regular maintenance, less near direct salt spray. These are industry-typical ranges, not a warranty. Actual lifespan depends on ventilation, installation quality, and exposure.
Section 232 tariffs on imported steel and aluminum stood at 50% as of early 2026 and were unaffected by a February 2026 Supreme Court ruling on a separate set of tariffs, according to roofing trade press reporting. That adds real cost to metal roofing, flashing, gutters, and fasteners. It has less effect on asphalt shingles, which are petroleum and fiberglass based rather than metal. We build current material pricing into every estimate rather than quoting last year's numbers.
Serving all of Nassau and Suffolk County. GAF certified, fully insured, Nassau HIC #EF-65498 · Suffolk HIC #HI-72958.
Whether you're dealing with an active leak, planning ahead for a roof that's showing its age, or working through a storm damage claim with your insurer, the first step is the same: a free, honest inspection with photos and a written scope, no pressure attached.
(631) 532-7346