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.
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.
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.
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 is the gold standard in roofing. Our installations qualify for GAF's System Plus, Silver Pledge, and Golden Pledge warranties — the strongest in the industry. Non-certified contractors cannot offer these.
From Valley Stream to Montauk — every community in Nassau and Suffolk County. We have crews positioned across the Island so response times are fast whether you're in Hempstead or Riverhead.
Detailed, written estimates at no cost. We itemize everything — materials, labor, disposal, and any additional work. No surprises on the final invoice.
"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 1–2 days for an average-sized home. Larger roofs or complex designs may take 2–3 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 — most storm-damaged roofs are replaced at little or no out-of-pocket cost.
GAF certification means our crews have completed factory training and our installations qualify for GAF's System Plus, Silver Pledge, and Golden Pledge warranties. Non-certified contractors cannot offer these warranty levels.
Shingle roofs run $9,000–$18,000. Metal roofing runs $18,000–$35,000. Flat roofing runs $4,000–$12,000. We provide free detailed written estimates.
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.
Serving all of Nassau and Suffolk County — GAF certified, fully insured.
(631) 532-7346