R.W. Mulligan

4.1(18 reviews on Google)

Roofer listing in Riverhead, NY

About R.W. Mulligan

R.W. Mulligan is a roofing and siding company in eastern Long Island with offices in Riverhead, Cutchogue and Southampton. It is a GAF Master Elite contractor and takes on commercial roofing as well as homes. The company installs EPDM flat roofs, cedar shingles, asphalt shingles and slate roofs, along with gutters, vinyl siding, windows, doors and custom metal work. Roofs carry comprehensive warranties and a lifetime warranty program, and financing options are offered. The company is fully licensed and fully insured, and it runs a Roofs for Troops program. Rated 4.1 from 18 Google reviews, 13 of them five stars and 4 one star.

What reviewers mention: job (7), roof replacement (5), punctuality (3), debris cleanup (2), dedicated workers (2), office staff (2), the office (2), crew (2)

Services and details

  • Roofing work

    Yes

  • Commercial roofing

    Yes

  • Flat roofs

    Yes

  • Asphalt shingles

    Yes

  • Slate roofing

    Yes

  • Gutters

    Yes

  • Financing

    Yes

  • Warranty

    Yes

  • States a contractor license

    Yes

  • Manufacturer certified

    Yes

No information yet on leak repair, emergency service, storm damage repair, helps with insurance claims, metal roofing. The website did not say; call and ask.

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Listing compiled from public sources on 2026-11-11. Report a correction or request removal. Back to roofers in Riverhead.