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Typical your area range for this kind of work, from regional averages — not a quote from Sentry Roofing. 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
Sentry Roofing & Solar describes itself as a Manchester, New Hampshire roofing contractor that also installs solar, and says it is a family-owned business that has served New Hampshire and northern Massachusetts since 2004. On Google it holds 4.7 stars from 199 ratings. A recent customer said six workers arrived about 8 am, hung netting to protect the house and plantings, and were done and gone by 6pm; it was the second job Sentry had done for that customer. One recent customer had 4 skylights replaced and 300 feet of gutter topper installed, and said TJ made sure everything went smoothly. A recent customer said TJ and Sentry kept them in the loop on a new roof and solar project and got it done sooner than expected. A 2025 customer said Sentry replaced failing ridge caps on a hip roof in about half a day, and that Dillon inspected the rest of the shingles with a drone and did not try to up-sell a whole roof job. A 2024 customer said a 45-square roof was completed within a few hours, with a quote about 5% below the nearest comparable one. A 2026 customer gave one star, saying Sentry did minimal patchwork and that problems at their condo continued every winter. A 2023 Reddit commenter in r/newhampshire said an emergent patch took 4 days and cost $600 for a tarp and 6 strips of wood. A 2022 customer said they were charged for 4 more pieces of plywood than were used, and said "they did honor the 8 in the end."
“I would get quotes from Sentry Roofing and Affordable Roofing.”
“IRoof came out and gave me what I thought were good quotes on different options and said some of the roof didn't need to be replaced yet. Sentry came and told me how to preserve the older sections of the roof for at least a couple more years. Said if it was his house he would wait which was good news. They also had slightly better quotes. So happy with the situation for now. We had an appointment with Adam V but cancelled it.”
“We went with Sentry Solar. They did a better design (in our opinion) than Granite State which got us extremely close to the 120% return. Also...the companies had different interpretations of the mounting regulations and the inspector agreed with Sentry which allowed way more panels. Ju”
“I would NOT recommend Sentry. Had them do an emergent patch (took 4 days to come and charged $600 for a tarp and 6 strips of wood for shingles that blew off). Then I had to chase them down to request a repair estimate after insurance would not do a replacement. Voicemails always full, d”
“We also went with Sentry. Competitive price, showed up when they said they would and their crew hustled until finished. Only feedback was a lot of nails were on ground even though they cleaned but it was pretty dark out when they wrapped it up. Would def recommend.”
“About a dozen workers from Sentry Roofing spent the day replacing the siding and roof of Jim Hill's Stark Highway home -- all at no cost for the family.”
I have used Sentry Roofing on several of my projects and they have been professional, responsive, and the crews were clean and efficient. Would not hesitate to recommend to any other contractors or homeowners.
I'm a contractor and I use Sentry Roofing for all my roofs. They get the job done fast and efficiently and are very reasonably priced.
Great experience with Sentry Roofing from start to finish, highly recommend.
Every thing about this job was handled very professionally, from Dave in sales to the work crew who did the installation. They worked great as a team and got the job done in record time. Thank you!
6 very hard working men arrived at my house about 8 am this past Thursday, they hung netting to protect the house and plantings, laid out tarps to collect the old shingles, etc. By 6pm they were done and gone, did a great job and the house looks great. Also their price was very competitive. This is the second job they have done for me.
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Certified attributes are verified against the public registry. Others are the business's own statement.
3 changes recorded — last scanned Sep 30, 2026.
Honest assessments5.0
Whole-exterior packages5.0