Nassau & Suffolk County, NY
GreenLeaf Roofing
A roof is the one part of your home you never want to think about. GreenLeaf Roofing is built so you don’t have to. We are a GAF Certified roofing contractor installing architectural shingle roofs across Long Island, from single-family homes to barns and commercial buildings, with the same in-house crews and East Setauket office that have stood behind 3,000+ solar installations since 2012.
Most residential roofs are torn off, re-decked where needed, and finished in a single day. You get a clean property, a written warranty, and a company that will still answer the phone in 20 years.
GAF Certified Roofing
GAF is North America’s largest roofing manufacturer, and they don’t certify just anyone. GAF Certified contractors are vetted for proper licensing, insurance, and a track record of quality installs. For you it means factory-backed materials, installers trained to GAF’s specifications, and warranty coverage that a non-certified roofer simply cannot offer.
GAF Timberline® Shingles
America’s best-selling architectural shingle. Dimensional look, Class A fire rating, and algae-resistant granules that keep Long Island’s salt air and humidity from streaking your roof.
Enhanced Warranty Coverage
As a GAF Certified contractor we can register your roof for GAF’s enhanced limited warranties, covering the full roofing system and not just the shingles, backed by GAF rather than by the installer alone.
Complete Roofing System
Synthetic underlayment, ice-and-water shield at eaves and valleys, starter strip, ridge vent, and ridge cap, all GAF-matched components installed as one system so every layer is covered.
What We Do
Residential, agricultural, and commercial roofing across Nassau and Suffolk County.
Full Roof Replacement
Complete tear-off down to the deck, inspection and replacement of rotted plywood, new GAF system installed, and a magnetic nail sweep of your yard before we leave. Most homes are finished in one day.
Roof + Solar Together
Putting panels on a tired roof means paying to remove and reinstall them later. We replace the roof and install solar as one coordinated project, one point of contact, so your new roof and your new array age together.
Barns & Commercial Buildings
Large-format roofs like horse barns, dealerships, and light-industrial buildings need crews comfortable with scale. Our Hidden Pond Stables barn in Manorville is a recent example.
Gutters, Fascia & Decking
New seamless gutters and leaders, fascia and drip edge, skylight flashing, and plywood re-decking, priced up front so there are no surprises on install day.
Why Hire a Solar Company for Your Roof?
We have inspected more Long Island roofs than almost anyone. Every solar install starts with a roof assessment, so our crews have been on thousands of local roofs and know exactly where they fail: valleys, chimney flashing, and the north-facing slopes that never dry out.
We are not going anywhere. Storm-chaser roofers appear after a nor’easter and vanish before the warranty matters. GreenLeaf has operated from the same East Setauket headquarters since 2012, with 26 employees and a service department that answers the phone.
One permit path, one crew, one warranty. If you ever want solar, batteries, or an EV charger, the people who built your roof are the people who will mount to it, and nobody can point fingers at anyone else.
How a GreenLeaf Roof Happens
1
Free Inspection & Quote
We measure the roof, check the decking and attic ventilation, and give you a written, itemized price. No deposit to get a number.
2
Pick Your Shingle
Choose your GAF Timberline color with real samples at your home. We order materials for delivery the day before install.
3
One-Day Install
Tear-off, deck repairs, full GAF system, and ridge vent, usually complete by late afternoon with a project lead on site all day.
4
Cleanup & Walkthrough
Magnetic nail sweep, debris hauled away, final walkthrough with you, and your GAF warranty registration filed.