Verified record
Typical your area range for this kind of work, from regional averages — not a quote from DeNisco Construction Company 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
Denisco Roofing describes itself as a Manchester, NH roofing contractor doing residential and commercial roof replacement, repair, inspection and maintenance, plus gutters, siding and decks, and says it has been in business for 20 years. A local paper has described John Denisco founding Denisco Construction Co. in Manchester. A recent Google customer said John had all the materials at the house the next day without taking a deposit, and that three of their neighbors have used him since. A 2020 Angi customer said the company rebuilt the deteriorated rakes, fascia and soffits on an 1830 barn, that John's crew roofed the barn and the home, and that the project was completed in 3.5 days. A 2020 Angi customer said John replaced their roof and helped resolve the ventilation issues that had caused the old roof to fail. A 2022 Google customer said the company stripped and reshingled a 200-plus-year-old house, garage and barn. A 2021 Google customer with a home in Nashua said the workers came in the morning and were done by the afternoon, and that John did some additional work for no charge. A 2021 Google customer said that after the contract was signed, John ordered the materials ahead of time in case prices went up. A 2020 Angi customer said one of the men went around the entire house with a roller that picked up any nails. A 2022 Google customer said a roof the company redid collapsed and that they reached out several times without getting a response. A 2024 Google reviewer who never hired the company said it set up equipment, machines and ladders in their driveway while roofing the house on the right, and that a call to its 24-hour emergency line was not returned. The company holds an A+ grade from the Better Business Bureau and is BBB accredited.
“denisco construction.”
“John Denisco founded Denisco Construction Co. in Manchester with help from training that Knowledge Institute developed and that he received from Vocational Rehabilitation.”
Very pleased with my roof John had all the materials at my house the next day without even taking a deposit,was impressed with the trust and communication,roof came out great and 3 of my neighbors have used him since with zero issues as well,I wouldn't recommend another roofing company but DeNisco they really go above and beyond Thanks again John let me know when you have time to roof the barn in back !!!!!!!!
Showed up as scheduled. Did the job quickly and efficiently. Looks great.
This is the second time we’ve used Denisco Construction to do a roof. First at our home several years ago and then just recently at our parents home. They really are the best out there from fair price to fast scheduling and then superb job! Everything is done carefully and clean up was great. I really can’t say enough good things. Give them a call!
Excellent communication and service! I still can’t believe how fast they stripped the two layers of roofing shingles. My new roof is just perfect! Thanks for a great job at a fair price!
Only because it's not possible to give ZERO STARS. First, may I say we never hired them to do a roofing job. The attached photos are what I came home to. I asked why they were set up in our driveway with equipment, machines, ladders and they had their work truck parked in the other space we pay to have plowed. No one answered. Not one word. Not excuse me, not sorry. Nothing. I thought there could be a language barrier. My Spanish is minimal at best. I tried to speak to the person in charge and he was receptive to me in Spanish, but as I said I am limited. I called the "24 hours emergency line" I am still waiting for a call back. Please note the house on the right was having the roof done. They have a full driveway. This is how they chose to set up. The person that disperses the crew is responsible. As I said he has still not bothered to call.
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2 changes recorded — last scanned Sep 30, 2026.
Communication about work outside the contract4.4