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Flat Roof & EPDM Roofing

Flat Roof & EPDM Roofing in Westhampton Beach & the Hamptons, NY

Expert flat roof repair and installation across the Hamptons using premium EPDM membrane systems built for Long Island’s coastal climate.

EPDM Flat Roofing on Long Island’s East End

Contemporary and modern homes throughout the Hamptons corridor — from the architect-designed residences of East Hampton to the newer construction in Bridgehampton and Water Mill — frequently feature flat or low-slope roofing sections. When these systems fail, the consequences are fast and expensive: interior water damage, mold, and structural compromise. Proper EPDM roofing contractor installation on Long Island is not a DIY project or a job for a general contractor.

EPDM (ethylene propylene diene terpolymer) rubber membrane is the gold standard for flat roofing in coastal environments. It flexes with temperature changes without cracking, resists UV degradation and ozone, and when properly adhered and seamed, creates a fully waterproof surface that can last 30+ years. Straightline Roofing has been installing and repairing flat roof systems in the Hamptons since 2002 — we know the common failure points and we install to prevent them.

What’s Included in Our Flat Roof Service

  • Full inspection of existing flat roof system and insulation
  • Complete tear-off to structural deck on replacements
  • Deck repair and leveling as needed
  • High-density polyiso or cover board installation
  • Fully adhered EPDM membrane (60 mil or 90 mil as specified)
  • All seams heat-welded or chemically bonded and inspected
  • Proper flashing at all walls, curbs, and penetrations
  • Drain and scupper inspection and replacement as needed
  • Ponding water assessment and correction

We Also Repair Existing Flat Roofs

If your flat roof is leaking but still has life left in the membrane, targeted flat roof repair in the Hamptons is often the right call. We locate the actual source of the leak (which is often not where the water appears inside), clean and prepare the membrane, and apply a permanent patch or re-seam. We never recommend replacement when repair will solve the problem.

Frequently Asked Questions

How long does an EPDM flat roof last?

A properly installed 60 mil EPDM membrane typically lasts 20–25 years. A 90 mil membrane can last 30+ years. Maintenance (annual inspection and minor seam touch-ups) is the biggest factor in longevity.

Is EPDM better than TPO for my Hamptons home?

Both are solid systems. EPDM has a longer track record in coastal environments and handles thermal movement extremely well. We recommend EPDM as our default flat roof system and will explain the specific tradeoffs during your estimate.

My flat roof is leaking. How quickly can you respond?

For active leaks causing interior damage, call us immediately at (631) 288-8277. We offer emergency response across the East End and can typically provide same-day temporary protection and schedule permanent repair promptly.

Service Area

Flat roof and EPDM services across the East End: Westhampton Beach, Southampton, East Hampton, Hampton Bays, Bridgehampton, Water Mill, Sag Harbor, Montauk, and all surrounding communities.

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Licensed & Insured  ·  Westhampton Beach, NY  ·  Since 2002

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