Professional Commercial Roofing You Can Rely On
Low-slope roofing for mixed-use, retail and multifamily buildings installed in phases that keep tenants operating and rooftop equipment accessible.
Alliance General Contracting NY Inc is a licensed and fully insured contractor operating out of 2362 Westchester Ave in the Bronx. Commercial Roofing is one of the services our roofing service division performs week in and week out, and searching for commercial roofing contractor NYC or commercial roofing near me should bring you to a team that actually works in your neighborhood rather than a call center three states away.
Most of the roof failures we are called for are not mysterious. They start at flashing, at parapet walls, at skylight curbs, at drains that were never re-pitched, and at seams that were cold-lapped on a day that was too cold. Because we inspect before we quote, you get told what actually failed not a reflex recommendation to replace everything.
What's Included
- ✓TPO
- ✓ EPDM and modified bitumen
- ✓ Tapered insulation for drainage
- ✓ Curb and equipment flashing
- ✓ Roof hatch and access details
- ✓ Reflective cool-roof options
- ✓ Maintenance program options
Why NYC Properties Need Commercial Roofing
Roofs in New York City take a beating that most of the country never sees: freeze-thaw cycles, ponding water on low-slope decks, coastal wind uplift, rooftop mechanical traffic and a hundred years of patch-on-patch history. Alliance General Contracting NY Inc is a licensed roofing contractor working across the Bronx, Brooklyn, Queens and Manhattan on flat and pitched roofs alike, from a single blistered seam on a Westchester Avenue two-family to a full modified-bitumen replacement on a multifamily building.
Across the four boroughs we work on two-family brick homes, pre-war walk-ups, semi-detached row houses and mixed-use storefront buildings; limestone and brownstone rowhouses, three-family frame homes and converted industrial lofts; attached brick colonials, Tudor-style singles, garden co-ops and two-family investment properties; pre-war co-ops, brownstone conversions, tenement-era multifamily buildings and high-rise condo interiors. Each of those building types ages differently, and commercial roofing is specified accordingly what suits a detached Bayside colonial is not what suits a shared-wall Bed-Stuy rowhouse or a fifth-floor pre-war apartment in Washington Heights. That judgment is the part you are really hiring a licensed contractor for.
Signs You Need Commercial Roofing Now
Property owners usually call us after they notice one of the following: visible staining or discoloration on interior finishes, a musty smell that returns after every rain, hairline cracking that keeps widening season over season, materials that are loose, spalling, sagging or separating, rising utility bills that suggest a compromised building envelope, or a condition flagged on an inspection or violation notice. None of these get cheaper with time. Water in particular finds a path and then keeps using it, and by the time damage is obvious the repair has usually doubled in scope.
If you are seeing any of that, book the free estimate. We will tell you honestly whether it is urgent, whether a targeted repair will do, or whether you can safely budget for it next season.
Timeline and What To Expect
After your free walkthrough you receive a written, line-item scope with materials named and allowances stated. Once you approve it we confirm material lead times, arrange any filings the work requires, and give you a start date with a realistic duration. On site we protect the surrounding areas before work begins, keep the space clean at the end of each day, and send you progress photos of anything that will be covered up. When the work is done we walk it with you and close out every punch item before invoicing the balance.
Permits and code compliance are handled as part of the job where applicable. New York City has real requirements around structural work, sidewalks, facades, plumbing and electrical, and doing it properly protects your resale, your insurance position and your neighbors.
