RW Mulligan was easy to work with. Their staff communicates well. They arrived on time in the am and were completely finished with the entire project in one day. We have a beautiful new roof, that is much more sound than before. The workers were professionals and left the yard spotless. We received quotes from about seven different companies and RW Mulligan offered the same quality and materials for a much more reasonable price. If you are in need of any roof repair or replacement, I highly recommend this company.
Bob M
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January 09, 2026
Very professional, well equipped team. I was surprised by the size of the crew, 9 men plus supervisor, 4 trucks plus 2 motorized lifts for the old roof shingles.(2 layers) Well managed crew arrived on time and cleaned ALL debris.
B Ritchie
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January 11, 2019
I highly recommend RW Mulligan. Working with them was a pleasure. We recently moved into a home that had 2 small 2nd floor balcony patios. Turns out both were leaking through roof overhang below. In order to get the job done correctly RW Mulligan had to remove old flat roof, sub-floor, damaged trim, and doors. The doors were then re-flashed, raised and put back in. RW installed new drain (that works), new sub-floor, replaced all trim and moldings. The roofers/carpenters did a great job and all water drains properly. RW Mulligan's communication throughout the whole process was fantastic. Emails included pictures and all decisions were discussed and explained prior to any work being completed. If I ever need any more roof work RW Mulligan will be the only company I will call!
Brian R.
Cutchogue, NY
John Gillespie
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August 26, 2025
We just had our roof on Shelter Island replaced by R.W. Mulligan. The job was done professionally in a timely manner. Damian was on site for the whole job to make sure nothing was overlooked. Great work done by a great crew!
Michael Napoli
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October 24, 2019
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!!!
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RW Mulligan was easy to work with. Their staff communicates well. They arrived on time in the am and were completely finished with the entire project in one day. We have a beautiful new roof, that is much more sound than before. The workers were professionals and left the yard spotless. We received quotes from about seven different companies and RW Mulligan offered the same quality and materials for a much more reasonable price. If you are in need of any roof repair or replacement, I highly recommend this company.
Very professional, well equipped team. I was surprised by the size of the crew, 9 men plus supervisor, 4 trucks plus 2 motorized lifts for the old roof shingles.(2 layers) Well managed crew arrived on time and cleaned ALL debris.
I highly recommend RW Mulligan. Working with them was a pleasure. We recently moved into a home that had 2 small 2nd floor balcony patios. Turns out both were leaking through roof overhang below. In order to get the job done correctly RW Mulligan had to remove old flat roof, sub-floor, damaged trim, and doors. The doors were then re-flashed, raised and put back in. RW installed new drain (that works), new sub-floor, replaced all trim and moldings. The roofers/carpenters did a great job and all water drains properly. RW Mulligan's communication throughout the whole process was fantastic. Emails included pictures and all decisions were discussed and explained prior to any work being completed. If I ever need any more roof work RW Mulligan will be the only company I will call! Brian R. Cutchogue, NY
We just had our roof on Shelter Island replaced by R.W. Mulligan. The job was done professionally in a timely manner. Damian was on site for the whole job to make sure nothing was overlooked. Great work done by a great crew!
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!!!