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D&G Roofing & Siding, doing business online as D&G Exteriors, handles roofing, siding, window, and deck work across Burlington, Woburn, Lexington, Winchester, Bedford, and other towns in the Middlesex County area. Reviewers describe John tracing problems to their root cause — a persistent roof leak traced to a failed pipe boot and step flashing rather than a recommended full replacement — and crews that keep job sites clean and protect landscaping and flooring during larger projects. The company regularly takes on multi-trade jobs, combining a full roof replacement with new siding and windows in a single coordinated scope, including steep, multi-dormer roofs like a three-dormer Winchester colonial. Google shows a 5-star rating from 130 ratings. D&G's own site lists HIC registration number 210073 and a CertainTeed 5-Star Contractor certification.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from D&G Roofing & Siding. 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
We went back and forth for months on whether to do a standing seam metal roof on our colonial. It's a less common choice around here and a few people told us we were crazy. John was one of the only contractors who didn't try to talk us out of it. He walked us through the pros and cons honestly, explained how the installation differs from shingles, and helped us pick a color that works with the style of the house. The finished roof is stunning. It has this clean, crisp look that shingles just can't match, and knowing it's going to outlast us in this house makes the higher upfront cost feel like a smart decision. We've had people slow down driving past to look at it, which is kind of funny. Zero regrets.
New roof on our Woburn garrison. Looks sharp, went fast, no issues. Solid company.
Had a roof leak that showed up every time we got a heavy northeast rain. Called three companies. Two wanted to sell us a full replacement. John came out, spent time in the attic tracing the water path, and found a failed pipe boot and a section of step flashing that had pulled away from the wall. His crew fixed both and the leak is gone. That was seven months ago. Really appreciate that he diagnosed the actual problem instead of jumping to the most expensive option.
We selected D&G for a rather involved project on our Lexington home. Full roof replacement with an upgraded architectural shingle, new fiber cement siding, and custom aluminum trim work throughout. Our home is a 1960s contemporary with a lot of angles and large overhangs, so the execution had to be precise or it would have looked terrible. John clearly understood what we were going for. His crew handled the transitions between materials and roof planes with care, and the finished result is exactly what we envisioned. The house has a completely different character now. Clean, modern, well proportioned. Several neighbors have commented on how much the property has changed. We are very pleased with the outcome.
"We moved to Burlington two years ago and the house needed exterior work badly. Roof was at the end of its life, the siding had seen better days, and the whole place just looked tired. We asked John to come take a look and he put together a scope that covered everything, roof, siding, trim wrap, and gutters. It was a big investment for us but the house honestly needed all of it. The project ran about three and a half weeks total. There were a couple of weather delays but the crew communicated well about scheduling and never left things half done when they had to stop for the day. The transformation is pretty remarkable. We went from having one of the most run down houses on the street to one that people actually compliment. My mother in law said it looks like a different house entirely, and she's not easy to impress. Very happy we went with D&G Roofing & Siding."
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1 change recorded — last scanned Sep 19, 2026.