Every Roof Line
in Brentwood, Covered
Few Long Island communities pack in as many roof lines as Brentwood. With more than 62,000 residents and roughly 15,000 single-family homes, this Town of Islip hamlet is the most populous community in Suffolk County — and the housing runs the full range.
Tight postwar Capes and ranches sit shoulder to shoulder near the LIRR station, then give way to 1970s and 80s split-levels and larger colonials out toward Baywood. After 25 years across the South Shore and inland Islip, that mix is exactly what J. Great Roofing handles every week.
Inland Sun, UV,
and Cold-Weather Ice Dams
Brentwood sits away from the water, so homes off Suffolk Avenue, Crooked Hill Road, and Fifth Avenue don't fight tidal flooding or heavy salt air. What they fight instead is age and exposure.
Most central-grid Capes and ranches went up in the 1950s and 60s under three-tab asphalt rated for 20 to 25 years — and a lot of those roofs are now well past the mark. Here's what puts a Brentwood roof on the clock:
- Sun-baked shingles — decades of inland UV curling tabs and streaking south-facing slopes
- Granule loss — worn three-tab roofs washing grit into the gutters
- Ice dams — cold inland winters backing meltwater under the eaves of shallow-attic Capes
- Wind uplift — nail pops and lifted courses from wind driving off open ground
- Tired aluminum siding — original envelopes on the older grid ready for replacement
- Complex colonials — steeper pitches out east that need flashing spec'd to the house
Roofing Services
in Brentwood
From a single wind-lifted shingle to a full tear-off, every roofing and exterior need across the hamlet, handled by one crew with one point of contact.
Roof Replacement
Full tear-off and a complete GAF Master Elite system, sized to your Cape, ranch, split, or colonial. Most homes finished in a single day.
Explore Roofing
Roof Repair
Leaks, wind-lifted and missing shingles, worn flashing, and ice-dam damage traced to the real source and fixed for good.
Roof Repair
Siding & Gutters
Vinyl and fiber-cement siding to replace tired aluminum, plus seamless gutters, soffit, and fascia to close the whole envelope.
Siding & Gutters
24/7 Emergency Service
Active leak after a nor'easter or summer wind event? We tarp, stabilize, and return for a permanent fix — day or night.
Storm DamageWhy Brentwood Homeowners
Choose J. Great Roofing
Plenty of contractors will hand you a low number and a crew you never see again. The difference here shows up in the certification, the warranty, and the cleanup.
GAF Master Elite®
A certification held by only the top 3% of roofing contractors in the country.
Golden Pledge® Warranty
Lifetime coverage on both materials and our workmanship — protection most local roofers can't offer.
Single-Day Installs
Most full replacements are torn off, installed, and swept for nails before we leave for the day.
Trusted Since 1999
Founded in 1999, based at 619 Sunrise Hwy in West Babylon — a short drive from every Brentwood street.
Rated 5.0 Stars by Long Island Homeowners
Across 87+ verified reviews, homeowners point to the same things: clean single-day installs, honest estimates, and a driveway swept clear of nails. Licensed and insured in New York State, open 7am–7pm Monday through Saturday.
Areas We Serve Near Brentwood
From the older grid near the Brentwood LIRR station and the neighborhoods around Ross Memorial Park and Brentwood State Park out to Baywood and the eastern colonials — plus the communities next door.
See the full service areas list for every town we cover across Long Island.
Brentwood Roofing FAQs
Straight answers to what Brentwood homeowners ask us most.
Most of the postwar Capes and ranches near the LIRR station were built with three-tab asphalt shingles rated for about 20 to 25 years. If your roof is 20-plus years old, curling at the edges, shedding granules into the gutters, or showing bald patches from years of inland sun and UV, it is time for an inspection. We give Brentwood homeowners an honest read on whether a repair will hold or a full GAF replacement is the smarter spend.
Yes. Brentwood sits inland from the South Shore, so it runs colder in winter than the waterfront hamlets and holds snow longer. Older Capes and ranches with shallow attics and thin insulation are prone to ice dams, where melt refreezes at the eaves and backs water up under the shingles. We install proper ice-and-water shield along the eaves and valleys and check ventilation to keep it from happening again.
For the great majority of Brentwood's single-family Capes, ranches, and split-levels, yes. We tear off the old roof, inspect the decking, and install a complete GAF system in one day, then do a full magnetic nail sweep of the yard and driveway before we leave. Larger colonials in the eastern sections may take longer, and we tell you the timeline up front.
We cover all of Brentwood (11717), from the neighborhoods off Suffolk Avenue and Crooked Hill Road to the sections near Ross Memorial Park and Brentwood State Park, plus Baywood, Central Islip, Bay Shore, North Bay Shore, and Islandia. Call (631) 669-6269 for a free local estimate.