Overview
About Us
The R.W. Mulligan Company has long been the premier roofing and siding company serving Eastern Long Island. As a GAF Master Elite Roofing Contractor and GAF Master Commercial Roofing Contractor we are fully qualified to install all types of steep slope roof and low slope roof systems. Our craftsmen are specialists in EPDM roofing and siding, Cedar shingle 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 stand behind our work by offering the industry's most comprehensive warranties on Long Island, or anywhere. Whether it is 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.
*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the Contractor Terms of Use.
Customer Reviews

"Did an amazing job!"
"We cannot say enough about the service and quality of RW Mulligan. Luis is a hard-working, honest and dependable professional. Catie, is incredible in the office. All the workers were respectful and dedicated. We cannot stop talking about how great our experience was with this business! Look no further. Need a new roof? This is the business to go with!"
"Needed a new roof on my house after 30 years and really was unsure what company to go with. Thrilled that I contacted R W Mulligan!!! The entire process was handled professionally. I set up appointment through Catie and Tom came out and walked me through what the job would entail. I got a detailed written estimate on every aspect of what was to be done.. Good price. We scheduled appointment and the day of the job Luis, Damien and entire crew were terrific in getting the entire project done to perfection just as had been outlined in estimate. Don't hesitate!!!"

"Completely Satisfied"
"Profession and knowledgeable. Worked efficiently was always on time. Excellent craftsman type work."
"RW MULLIGAN FIRM IS"

- "Completely Satisfied"
- "Profession and knowledgeable. Worked efficiently was always on time. Excellent craftsman type work."
- "RW MULLIGAN FIRM IS"
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "ROOFERS WERE FANTASTIC"
- "VERY KIND AND PROFESSIONAL!"
- "R W MULLIGAN"
- "EXCEEDED MY EXPECTATIONS"
- "EXCELLENT IN EVERY WAY."
- "PROFESSIONAL & KNOWLEDGEABLE CONTRACTOR"
- "EXCELLENT WORKERS"
- "Very Professional Workers"
- "RW MULLIGAN"
- "Excellent workmanship"
- "FAIR, PROFESSIONAL, KNOWLEDGEABLE"
- "ALWAYS PROFESSIONAL"
- "RW Mulligan%2C an outstand roofing company."
- "Professional and Efficient"
- "EXCELLENT CONTRACTOR"
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "KNOWLEDGEABLE CONTRACT"
- "PROFESSIONAL COMPANY"
- "3rd Roof in 25 years"
- "PROFESSIONAL, EXPERIENCED AND KNOWLEDGEA"
- "A MODEL FOR ALL CONTRACTORS"
- "TOTALLY PROFESSIONAL & KNOWLEDGEABLE"
- "Customer asked us not to share his/her review."
- "A well versed group of professionals"
- "PROFESSIONAL KNOWLEDGEABLE CONTRACTOR"
- "Amazing Contractor!"
- "NOT ONLY PROFESSIONAL BUT SO KIND"
- "Trusted knowledgeable contractor"
- "MASTER ELITE CONTRACTOR"
- "VERY PROFESSIONAL - CAME HIGHLY"
- "Customer asked us not to share his/her review."
- "EXCELLENT CONTRACTOR & FINISHED PRODUCT"
- "Customer asked us not to share his/her review."
- "EXCELLENT CONTRACTOR"
- "TOM WAS GREAT HE KNEW"
- "GREAT CONTRACTOR"
- "very satisfied customer. we are very pleased with both the professional manner with which the work was done and the finshed product. the work was completed on time and the clean up was excellent. Mr Mulligan is exceptionally knowledgeable and patiently answered all of our questions."
- "Great job will definitely recommend them to everyone that needs a roof"
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "IM 70 YEARS OLD OWN THREE"
- "Excellent contractor"
- "Customer asked us not to share his/her review."
- "Very happy with the work that was done. Large professional crew. Facinating to see that much work done so quickly and neatly."
- "Highly Professional Contractor"
- "Professional"
- "REPRESENTATIVE ASSESSED"
- "OUT PERFORMED ALL"
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "BOB GRUBE"
- "I CHOOSE RW MELLIGAN"
- "THE HOUSE DONE WAS MY SUMMER HOME"
- "Customer asked us not to share his/her review."
- "WERE PROFESSIONAL, ORGANIZED, EFFICIENT AND COURTEOUS."
- "Do a quality and professional job"
- "Are professionals with a true understangind of their products"
- "CHANGE NOTHING"
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "Did the job well"
- "performed every aspect of the job from initial contact to follow-up with an absolute high degree of courtesy, skill, and professionalism. Tom Mulligan and his crew went above and beyond, and more than exceeded my expectations."
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "do excellent work"
- "did exactly what they said they would do and went beyond that with improvement in ventilation and gutter work"
- "did a good job on time as expected."
- "assessed the job carefully, approached it professionally, and went above and beyond in performance of their work. Good Price, Outstanding Service!"
- "honest great price the person and the people who work clean friendly excellent"
- "would be as satisfied as I am."
- "Customer asked us not to share his/her review."
- "they were totally professional"
- "did a quality job at a fair price."
- "did a superb job."
- "Are reliable - Honest - Above and beyond any of competitors"
- "good job"
- "Customer asked us not to share his/her review."
- "completed my job to my satisfaction at a fair price"
- "Customer asked us not to share his/her review."
- "meet customer expectations regarding quality of products and services."
- "DID WHAT PROMISED IN A VERY PROFESSIONAL MANNER"
- "were professional in all aspects of the job"
- "understand the project"
- "respected my home as well as clearly explained all options and solutions for a lichen problem."
- "honest knowledgable and professional with confortable sales approach"
- "were very professional + they finished, you never knew they were there - other than the new roof"
- "are honest and experienced"
- "Yes I would recommend R.W. Mulligan to anyone who needs a new roof."
- "DO EXCELLENT WORK AND CLEAN UP"
- "Are true professionals. Give you a true estimate the first time and do great work."
- "represent the very best in the business and because they're service oriented!"
- "are professional, and about the price-reasonable."
- "excellent job"
- "do such a great job"
- "Customer asked us not to share his/her review."
- "do a super job"
- "are very professional. Their workers are efficient and work very well; they know what they are doing."
- "follow through with their obligations and promises"
- "Went above and beyond."
- "did what they said the would do, left our home clean, and were professional and courteous."
- "were professional"
- "did a good job"
- "have quality carpenters as workers."
- "performed better than expected clean neat and fast"
- "do quality work start and complete work when they will"
- "ARE THE BEST"
- "Tried to completely satisfy me and protect my property."
- "DID A GOOD JOB"
- "Customer asked us not to share his/her review."
- "not only did they understood my needs they also acted very professional and on time"
- "back up what they advertise"
- "good job great price"
- "are doing excellent work as a contractors and working appeared professional and listened to a few questions i had with answers"
- "do good work"
- "did a great job everyone knew what they had to do"
- "are the best"
- "Customer asked us not to share his/her review."
- "are professional compete job on time"
- "are the most professional contracting company i have seen in my 40years of masonary contracting"
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "see step 1 answers"
- "EXCEPTIONAL IN THEIR PERFORMANCE"
- "are professionals. They perform quality work for a reasonable price. They care for your property and do a through cleanup. They stand behind their work."
- "fast and excellent work"
- "DID AN EXTREMELY GOOD JOB ON ALL PHASES OF THE JOB"
- "they do the job right"
- "were very capable and professional in their work and clean up. Every worker knew their job and performed it well. They even went an extra mile and replace a few pieces of siding which were weathered to make the job look like new. Thanks"
- "did what they said an excellent job"
- "honest and very good at what they do"
- "ARE VERY PROFESSIONAL THEIR CLEAN UP WAS FANTASTIC"
- "did an excellent job"
- "tom did a good job his crew were fast but sloppy"
- "WOULD DO A GOOD JOB"
- "do an excellent job"
- "Customer asked us not to share his/her review."
- "THEYLL PERFORM OUTSTANDING PROFESSIONALY I RECOMENDED THE COMPANY TO PEOPLE"
- "Very professional, very competent"
- "PERFORMED ABOVE AND BEYOND MY EXPECTATIONS"
- "PROVIDE QUALITY SERVICE"
- "would get quality results when promised"
- "DELIVER WHAT THE PROMISE TO DO"
- "Stand by their work. Cedar wood siding was not replaced during installation but they sent someone out as so as possible afterwards. Onced scheduled they were there on that date and took only 1 day."
- "Customer asked us not to share his/her review."
- "DID THE JOB THE WAY THEY SAID THEY WOULD"
- "WORK FAST AND ARE FAIRLY ACCURATE"
- "do very high quality work and are extremely professional"
- "ARE HONEST AND CAREING"
- "WILL DO AN EXCELLENT JOB AND WILL NOT DISSAPOINT"
- "Customer asked us not to share his/her review."
- "Are professional,produce quality work and look out for the customer. They take time to do the work and get it done the right way. They strive to make the customer happy."
- "STAND BEHIND THEIR PROFESSIONALS KNOW HOW"
- "PERFORMED GOOD WORK AT THE LOWEST COST"
- "HE DID ANOTHER SWEEP WITH CREW DID A QUALITY JOB WORKED HARD GAVE ME FAIR VALUE"
- "DID THE BEST JOB GAVE THE BEST PRICE AND WAS VERY PROFESSIONAL IN EVERY ASPECT"
- "VERY FAST GOOD WORK COURTEOUS"
- "GREAT"
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "do a good job."
- "HONEST DEPENDABLE EXCELLENT WORK"
- "Customer asked us not to share his/her review."
- "THEY DO MORE THAN EXPECTED THEY BRING ATTENTION TO OTHERS POSSIBLE PROBLEMS AT THE HOUSE"
- "PROFESSIONAL , RESPONSIVE,TIMELY,PRICE COMPETITVE AND DO EXCELLENT WORK"
- "Customer asked us not to share his/her review."
- "PROFESSIONAL CLEANED UP GREAT PRICE FINISHED IN ONE DAY"
- "act professionally and stand behind their work"
- "DID A NEAT CLEAN JOB PROFESSIONALLY AND IN A GREAT TIME"
- "are professionals. Completed the job and explained all work provided."
- "would be pleased with the way the workers did the the job and were fast and good. They were also most friendly and agreeable. Left my property as they found it."
- "WORKED VERY EFFECIENTLY AND THE PROCESS WAS VERY WELL WORKED OUT"
- "DO GOOD WORK AND CUST. STAISFACTION"
- "AN EXCELLENT JOB PERFORM EXACTLY AN EXCEPTIOANL JOB"
- "are dependable, neat and accomodating."
- "Customer asked us not to share his/her review."
- "ACTED PROFESSIONALY AND GOT THE JOB DONE"
- "ARE FAIRLY FAST"
- "did an excellent job in installation and clean up"
- "Customer asked us not to share his/her review."
- "DO A FANTASTIC JOB I HAVE USED THEM BEFORE ON A DENTAL HOUSE GREAT"
- "ARE VERY PROFESSIONAL"
- "Customer asked us not to share his/her review."
- "DID AN EXCELLENT JOB"
- "Acted extremely courteously. They are roofing professionals."
- "have done outstanding job."
- "as I say are professionals, Mr. Mulligan and his crew were exceptional."
- "Customer asked us not to share his/her review."
- "perform professionally, are neat and clean."
- "really do their work as professionals as they really are."
- "the best."
- "ARE VERY GOOD"
- "were very professional while doing the work"
- "DO EXCATLY WHAT THEY SAY THEY ARE GOING TO DO AND MORE GREAT TEAM"
- "did what they said they were going to do."
- "good"
- "cared about the customer and the well being of their product"
- "are reputable, well equipped, professional."
- "THEY ARE THE BEST ROOFER I HAVE EVER HAD"
- "they did an excellent job!"
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "i already have recommended them for their speed neatness and courtesy"
- "did a great job"
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "do an excellent job."
- "did a good job"
- "WILL LIVE UP TO THEIR WORD"
- "exceed expectations."
- "Customer asked us not to share his/her review."
- "ARE FAIR HONEST FAST AND EXTREMELY COMPETENT I HAVE ALREADY RECOMMENDED THEM TO 5 FAMILES IN THE AREA THEY ARE THE BEST"
- "did a thoroughly professional job."
- "On a scale of 1-10 they earn an 11. Easy to deal with, honest, excellent work, cost competitive and overall outstanding"
- "Very professional - and top quality workmanship"
- "did a good job."
- "have a great system of installation"
- "ARE AND EXCELLENT COMPANY TO WORK WITH"
- "WOULD TREAT THEM AS WELL AS THEY TREATED US"
- "LISTENED WELL NEGOTIATED FAIRLY"
- "Deliver..."
- "DELIVERED AS PROMISED"
- "ANSWERED ALL OF MY QUESTION AND WERE FAIR PRICED"
- "FAIR PRICED ALL INCLUSIVE EST."
- "Customer asked us not to share his/her review."
- "THE ESTIMATOR DID AN EXCELLENT JOB WITH A DESCRIPTION OF WHAT WOULD BE DONE"
- "did a good job"
- "ARE RELIABLE AND DO EXCELLENT WORK"
- "ARE VERY GOOD AND CONSIENCE"
- "Customer asked us not to share his/her review."
- "did a good job!"
- "are competent professionals exceptional attention to detail honest"
- "are reliable and honest"
- "wuld be more than pleased with the conrteous and excellent workmanship."
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "did a good job and did what they said they would do. I am very pleased with their workmanship. All the workers were courteous, hard working & knew what they were doing. Robert Nill explained everything, Good Guy."
- "are extremely efficient and worked quickly"
- "they do a quality job at a reasonable price."
- "do an excellent job."
- "are competitively priced and do quality professional work in timely manner ... they clean up during and after the work!"
- "perform timely and professionally and they do the the necessary extras to assure the job is done to the owner's satisfaction!"
- "deliverd as promised"
- "delivered on their promise"
- "We quick, cleanup every day, did the job on time and at the price quoted."
- "will provide the highest professional standards to everyone the do work for, at very competative prices."
- "did a good job on my roof."
- "are an excellent company to deal with. I have reccommended them to others and will continue to do so."
- "are sincerely dedicated to providing the best service possible. We have recommend RW Mulligan to our next door neighbor who has already had work completed."
- "do what they said they would"
Awards
Habitat For Humanity Roofer
This contractor has been awarded the GAF Habitat for Humanity's "Community Contractor" designation by participating in at least one Habitat for Humanity project in partnership with GAF in a year. Participation include donating their time and labor (while GAF donates the materials) and demonstrating a commitment to his/her local community and helping those in need. A contractor receives the GAF / Habitat for Humanity "Community Champion" designation when completing at least 5 projects over a rolling 5 year period.
Installation Excellence Award
This award is for contractors that consistently install with a very high level of quality and provide their customers the highest protection that GAF offers.
Consumer Protection Excellence Award
This award recognizes those contractors that best protect their clients with system selling and enhanced warranties.
Training Excellence Award
This award is for contractors that are committed to training and continuous improvement.
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