Commercial roofing · Long Island

Commercial flat roofing.

Installation, repair, replacement and maintenance for flat roofs on commercial buildings, planned around your business.

Most commercial buildings on Long Island have flat or low-slope roofs. They make room for HVAC units, cost less to build over a large footprint and suit the look of modern storefronts and offices. They also need different care than a pitched home roof. Home Crew Construction provides commercial flat roofing across Long Island, in Nassau County and Suffolk County, including installation, repair, replacement and maintenance.

Quick answer: What commercial flat roofing services does Home Crew Construction offer?

Home Crew Construction installs, repairs, replaces and maintains flat roofs on commercial buildings across Long Island, from retail stores and offices to industrial buildings in Nassau and Suffolk County. Every job starts with an inspection and a clear written price, and the work is scheduled to keep disruption to your business low.

Commercial flat roofing services

Aerial view of a roof replacement in progress, new blue underlayment going on beside a backyard pool — Roof replacement, underlayment going on· Home Crew Construction

Flat roof installation for new buildings and additions.
Flat roof replacement when the existing roof membrane is worn out.
Flat roof repair for leaks, blisters, open seams and damaged flashing.
Maintenance and inspections to catch problems early and keep the roof draining.

We work on retail stores, office buildings and industrial facilities, and plan every job around how the building is used so the business can keep running.

Building owners and property managers get one point of contact, a written scope and price before work starts, and a crew that shows up when scheduled and cleans up before it leaves. We’re a family-owned, third-generation business based in Rocky Point, rated 5.0 on Google, and property managers are among the clients who leave those reviews.

Common flat roof problems

Ponding water. Water that sits for days after rain, where the roof has settled or drains are blocked.
Open seams and blisters in the membrane, where water can get underneath.
Flashing failures at parapet walls, curbs, rooftop units and pipe penetrations.
Clogged drains, scuppers and gutters that back water up onto the roof. See gutter repair.
Damage from foot traffic around HVAC equipment.
Wet insulation under the membrane, which adds weight and hides where a leak started.

Need help with commercial flat roofing?

Free quotes, a reply within 24 hours, and we answer the phone 24/7.

5.0 on Google

Get a Free Quote Call 631-965-0881

Flat roofs and Long Island weather

Aerial view of a large home with a cedar shake roof, surrounded by trees — Cedar shake roof· Home Crew Construction

A flat roof takes Long Island weather head-on. Heavy rain from nor’easters and summer storms has to find its way to the drains, not sit on the membrane. Snow piles up instead of sliding off, adding weight and meltwater. Summer sun heats a dark roof surface far above the air temperature, and freeze-thaw cycles in winter work at every seam and flashing joint. Salt air near the shore is hard on metal edges and fasteners. A flat roof that’s built and maintained with those conditions in mind lasts; one that isn’t starts leaking at the seams and edges first.

Should you repair or replace a flat roof?

A flat roof with a few leaks, open seams or one damaged area can usually be repaired. When the membrane is worn out across the roof, leaks keep appearing in new places, or there’s widespread wet insulation underneath, replacement is usually the better investment. We inspect the roof, explain what we found and give you a clear written price for the option that makes sense for the building.

How we handle a commercial roofing job

Cedar shake roof with dormers and a stone chimney on a white house beside a pool, seen from above — Cedar shake roof with dormers· Home Crew Construction

Site visit and inspectionWe check the membrane, seams, flashing, drains and deck, and talk through how the building is used.
Clear written quoteScope, materials and price in writing before any work starts.
Scheduling around your businessWe plan the work to keep disruption to tenants, staff and customers low.
Installation or repairDurable roofing membranes and proper flashing at every edge, wall and penetration.
Clean-up and walkthroughWe clean up the site completely and walk the finished roof with you.

Need help with commercial flat roofing?

Free quotes, a reply within 24 hours, and we answer the phone 24/7.

5.0 on Google

Get a Free Quote Call 631-965-0881

Keeping a flat roof in shape

Flat roofs last longest when someone looks at them regularly. Keep drains and scuppers clear, keep foot traffic to set paths, and have the roof checked after major storms, while problems are still small. Our roof inspections and roof repairs cover commercial buildings as well as homes.

For a leak that can’t wait, we’re open 24/7. See emergency roof services.

Managing a building with a flat roof? Call 631-965-0881 or request a free quote. We reply within 24 hours.

Commercial flat roofing FAQ

Common questions.

Still not sure?

Call 631-965-0881 any time. We'll tell you straight whether it's a repair or a replacement.

Do you repair flat roofs or only replace them?

Both. We repair leaks, seams, blisters and flashing on commercial flat roofs, and replace the roof when the membrane is worn out across the building.

What causes ponding water on a flat roof?

Usually blocked drains or scuppers, or low spots where the roof deck or insulation has settled. Water that sits for days speeds up wear on the membrane and should be looked at.