Commercial Division — Long Island

Long Island
Commercial Roofing.

Long Island commercial roofing contractors — TPO, EPDM and metal flat roof systems for warehouses, retail centers, offices and multi-tenant buildings across Nassau and Suffolk. Night and weekend crews. Minimal disruption. Licensed and insured.

Reserve Consultation Call (631) 312-7441

40.7712° N · 72.9934° W — SUFFOLK COUNTY

SERVICE: COMMERCIAL DIVISION — LONG ISLAND

LICENSE: VERIFIED

Commercial Division — Long Island

Commercial
Precision
Built to Code.

We install, repair, and maintain flat and low-slope commercial roofing systems across Suffolk County. From small retail buildings to large warehouses, we work with minimum disruption to your operations.

Our commercial crews follow OSHA safety protocols on every job and carry full commercial liability insurance. We're equipped for projects of any scale.

What's Included

TPO membrane systems (60mil, 80mil)
EPDM rubber flat roofing
Standing seam metal roofing
Modified bitumen systems
Roof coatings and restorations
Preventive maintenance programs
Emergency leak repairs
Skylight and drain installation

Get Free Estimate

Why Choose Alec's

The Alec's
Difference

Minimal Business Disruption

We schedule around your operations. Night shifts, weekend crews, and phased installations available to keep your business running during the project.

OSHA Safety Protocols

Every commercial job follows OSHA safety guidelines. Full insurance coverage, safety officers on-site, and documented safety plans before work begins.

Commercial Insurance Experts

We've managed hundreds of commercial insurance claims. We work directly with your carrier to maximize your settlement and minimize your out-of-pocket costs.

Execution Protocol

Our Process

How Every Project Gets Done

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Step 01 // Inspect

Site Assessment

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DRAIN_SURVEYINCLUDED

CODE_REVIEWNY_STATE

ESTIMATE_ETA48 HRS

Step 02 // Propose

System Specification

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PRICE_LOCKWRITTEN

SCHEDULECOORDINATED

DISRUPTIONMINIMAL

Step 03 // Execute

Professional Install

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INSPECTIONTHIRD_PARTY

WARRANTY15_25_YR

Flat Roof Systems

EPDM, TPO or
Metal — Specified
For the Building.

Most Long Island commercial roofing bids name a price before they name a system. We do it in the other order — here is how the three main flat-roof systems actually compare on a Suffolk County building.

TPO — The Energy Play

White heat-welded membrane in 60 and 80 mil. Reflects summer heat — the difference shows up on the cooling bill of every conditioned building under it. Welded seams beat glued seams in coastal wind. Our default recommendation for retail and office.

EPDM — The Budget Workhorse

Black rubber membrane with a 40-year track record on Long Island warehouses. Lowest installed cost, simplest repairs, handles freeze-thaw well. Where the space below is unconditioned — storage, light industrial — EPDM is usually the honest answer.

Metal & Coatings

Standing seam for low-slope and visible roofs; restoration coatings that add 10–15 years to an aging membrane for a fraction of replacement cost. On a roof that is tired but dry, a coating quote belongs next to the replacement quote — we price both.

For Property Managers

One point of contact across a portfolio: documented inspections with photo reports for ownership, annual maintenance contracts that catch ponding and seam failures before tenants call, emergency leak response, and night/weekend scheduling so occupied units never lose a business day. We already run partner relationships with Long Island PMs and realtors — ask for the commercial reference list.

Where We Work

The Suffolk commercial corridors are our backyard: the Hauppauge industrial park, the MacArthur/Veterans corridor through Bohemia and Ronkonkoma, Route 110 in Melville and Farmingdale, Sunrise Highway retail from Patchogue to Bay Shore, and Main Street storefronts in Patchogue, Sayville and Babylon village. Flat-roof detail by area in our Suffolk County commercial roofing guide.

Common Questions

Commercial Roofing FAQ

TPO is our most recommended system for commercial buildings — it reflects heat, resists UV, and performs well in Long Island's coastal climate. EPDM is excellent for budget-conscious projects. We'll recommend the best system for your specific building.

Depending on roof size, most commercial projects take 3–10 days. We can work nights and weekends to avoid disrupting your business hours.

Yes — we offer annual maintenance contracts for commercial properties. Regular inspections and preventive maintenance extend roof life significantly and catch problems before they become expensive.

Yes. We've handled roofing for retail shopping centers, industrial complexes, and multi-building campuses. We have the crew size and equipment for large-scale commercial work.

Manufacturer warranties range from 15 to 25 years depending on the system. We also provide a 2-year workmanship warranty on all commercial installations.

Yes — portfolio work is a core part of our commercial business. Property managers get one contact, documented photo inspections for ownership, annual maintenance contracts, and emergency leak response across all their Long Island buildings.

Often, yes. If the membrane is tired but the insulation below is dry, a restoration coating adds 10–15 years at a fraction of replacement cost. We moisture-scan first — coating over wet insulation wastes money — and quote the coating and the replacement side by side so you can compare real numbers.

Start Your Project

Get Your Free
Commercial Inspection

We inspect your roof, identify problem areas, and provide a detailed proposal. No obligation. We work around your business schedule.

CALL DIRECT: (631) 312-7441

Long Island
Commercial Roofing.