Welcome to RW Mulligan
RW Mulligan has long been considered the premier roofing and siding company serving eastern Long Island. As the only GAF Master Elite Roofing Contractor and GAF Master Commercial Roofing Contractor on Long Island we are fully qualified to install all types of steep slope roof and low slope roof systems. And we stand behind our work by offering the industry's most comprehensive warranties on Long Island...or anywhere. Whether it's a private residence roofing job, a commercial or industrial building, or even an entire shopping center, we have the expertise to handle the job...and we have the credentials to prove it.

Our craftsmen are specialists in EPDM roofing and siding, cedar shingles and shakes for both roofing and sidewall applications, asphalt shingles, slate roofs, vinyl siding, window and door systems, and custom metal work including copper and seamless gutters.

We know that our customers expect the highest quality when taking on a roofing, siding or other renovation project and we've built our reputation by delivering that quality in every roofing job we do. We make professionalism, quality materials, craftsmanship, safety and cleanliness our top priorities and our list of repeat customers is testament to that policy.

This web site has been designed to be as informative as possible so that you can make certain decisions about your project in the privacy of your own home without the pressure or influence of sales people. In doing so, one feature you should take advantage of is the Glossary page, where you can easily look up the definitions of industry terms with which you may not be familiar. Then, when you feel ready, we will welcome the opportunity to speak with you about your roofing, siding or renovation project and answer any of your questions. See for yourself why RW Mulligan continues to be the area's finest roofing, siding, custom metal and window and door replacement contractor.
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