Verified record
M Gendron & Son Construction is a Salem, NH roofing outfit that keeps showing up in the same kind of story: a storm knocks a roof loose, a tree falls, and Mike or Al is the one who calls back the same day. One customer says they called several roofers after a tree fell on their house, and in a 2023 review recalls MGS was the only one who returned the call, arriving that same day with an estimate. The written record covers 2017 through 2023 and runs to 20 quoted reviews across two platforms, plus permit records: BuildZoom's permit-derived profile lists 223 completed roofing projects, 15 of them in the past three years, with a typical job around $17,400 — mostly strip-and-reroof work alongside siding and skylight replacements. On the review side, the company is described as fast and thorough: full roof replacements finished in a single day, crews arriving before 7am and cleaning up completely before leaving, and, in a 2023 review, a 3,600-square-foot home with multiple roof sections and eight skylights redone in one day. A multi-family property owner, also writing in 2023, describes MGS diagnosing water intrusion traced to improperly installed rolled roofing on part of the building and fixing it. The reviews consistently name Mike and Al personally handling quotes, walkthroughs, and communication — from a sales rep explaining rain deflectors and sealing methods on site to a 2023 review where the new roof was planned with future solar panel installation in mind. Worth knowing: the company's Angi and HomeAdvisor pages both carry a headline of 84 ratings at 5.0 stars, but the review text behind that number is thinner than it looks — the two pages mirror each other exactly, one of the listed reviews is itself a copy of a Google review rather than an independent one, and most of the individual review dates cluster on the same day in February 2023 rather than spreading naturally, which looks like a capture quirk more than anything about the work itself. The "fully licensed and insured" line on those pages carries no licence number; BuildZoom separately lists an active Massachusetts Home Improvement Contractor registration for the company, worth confirming directly before signing anything. For a roof replacement or storm-damage repair, the volume of permitted work and the repeated same-day-response stories make a strong case — this is a crew built for exactly that call. Confirm the licence number directly, and get the skylight and siding scope spelled out in writing if your project includes either.
Mike from MGS responded immediately to my request from Angi for a roofing contractor. He came for an estimate the following day. He gave us a price that was half of another competitor - plus replacing a large skylight. The price included the permit and dumpster. He explained everything thoroughly and answered all our questions - and we didn't have to sit through a two-hour sales pitch. All materials were top quality and installed above standard practice. This was in December and we were concerned about the weather and short daylight. Mike assured us they should have the job done in a day, barring some unexpected repairs to the roof. Their crew came a week later. Crew leader Rick was fantastic. They stripped two layers of ashphalt shingles off the house, breezeway and garage, replaced the skylight, and were done in about seven hours. This included replacing the lead flashing around the chimney and building a cricket above it to divert the water. Amazing! They spent about another hour thouroughly cleaning up all the debris around the property, including scouring for nails with a large rolling magnet. The dumpster was picked up two days later. Except for the great looking new roof, the property looks like they were never here. We had three days of rain starting a few hours after they left, and the house is completely dry. This was one of the most pleasant experiences I've had dealing with a contractor. From start to finish, everyone has been friendly, respectful and professional. Mike was in constant contact with us throughout the process and responded immediately if I had a question. I highly recommend MGS for any roofing job. [Job cost stated on the page: $16,500]
MGS just replaced my roof shingles, and I must say I am greatly impressed. They did it when they said they would, took as long as they said they would (one day), and cost exactly what we had agreed upon in the contract. They were efficient and skilled. Very hard workers! No glitches at all, and that in itself is unusual in the contracting world. I highly, highly recommend them! [Angi labels this entry "Google Review" — it is a syndicated copy of a Google review, not an independent Angi review]
More than happy. They showed up on time worked hard and finished early.
MGS was a great company to do business with. We found them through Angie's list reading nothing but good reviews! Mike called us promptly to set up an appointment to answer additional questions and give an estimate. Our initial phone conversation made us very comfortable with considering MGS, but after meeting Mike and hearing all they do....we were confident in our choice. MGS uses GAF shingles and underlayment which come with a warranty. I believe the company is approximately 25 years old and most of the crew have been together for a long time. On a cold October our old roof was being prepared to be torn off at 7:30 am. By 5:30 pm we had a new roof with newly clad soffits and a very clean yard! Throughout the day the owner of MGS came to check on the job and say hello as well as Mike. At the end of the day the foreman of the job walked my husband around the house to show him everything that was done while he was at work. My husband and I are very pleased. Bonnie Norton
We recently had an incident requiring extensive roof repair due to a large tree falling on our house. We called several roofing companies and contractors and MGS was the only company to return our call. Mike came out on the same day we spoke to him and gave us an estimate and a time frame for the work to be done. We called him back the next day and hired MGS to do the job. Not only did they come out much sooner than anticipated but the work was done quickly and efficiently. Everything was done and cleaned up by early afternoon and looks fantastic! We are very pleased and highly recommend MGS Construction for any project, large or small that you may need to have done.
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1 change recorded — last scanned Jul 30, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from M Gendron & Son Construction LLC. Use it to sanity-check bids, then get the real number in writing.
A square is 100 sq ft of roof surface — bigger than the floor plan because of pitch and overhangs.
Estimated range
$9,000 – $18,600
Typical roofing project around $13,800
Seven skylight replacements in one day5.0
Answers in a storm5.0
Detailed craftsmanship5.0