Full-service roofing for Somerville’s triple-deckers, Victorians, and multi-family homes — replacements, repairs, and flat roof systems with full tearoff and ice protection in the tightest working conditions in Greater Boston. Google Guaranteed. 150+ five-star reviews.






Somerville is the densest city in New England — 81,000 people in 4.2 square miles. The housing is overwhelmingly triple-deckers and two-families, most built before 1940, packed onto lots with zero side yards and shared driveways. Roofing here isn’t just about materials — it’s about logistics, access, and doing quality work in conditions that leave no room for error.
CUSTOMER FEEDBACK ・ HEAR FROM OUR CLIENTS
5.0 Stars Across 150+ Reviews
Posted on Bradford JonesTrustindex verifies that the original source of the review is Google. We had been in our home a long time and exterior was due for serious updates. Roof was from the early 90s, siding was peeling in layers, and the windows were old vinyl with seal failure and had no insulation. We kept putting it off until a neighbor recommended John. He spent over an hour walking the property with us on the first visit, pointing out things we hadn't even noticed, including a section where moisture had been getting behind the siding for years. He didn’t pressure us, just a clear explanation of what was going on and what it would take to fix it right. We ended up doing everything. Full roof, new siding, all new windows, and complete trim. The crew showed up early, kept the property clean (and cleaned up after), and communicated well throughout. When they found more damage than expected behind one wall, John called same day with pictures and options before moving forward. The transparency was both refreshing and important. It's been about a year and a half and everything still looks and performs exactly as it should. Heating costs dropped noticeably and was especially apparent this year. We live on a main street and the noise in our front bedrooms is gone. The house legitimately looks like a completely different property. If you're in the north shore area thinking about exterior work, get a quote and talk to John. You'll see the difference.Posted on Roman CooperTrustindex verifies that the original source of the review is Google. We have a big old farmhouse out in Boxford with a roof that probably should've been replaced five years ago. Finally pulled the trigger and called D&G Exteriors. John came out, looked everything over, and gave us a quote that was fair and detailed. Crew did the whole tear off and install in three days. No complaints at all.Posted on Parker SimmonsTrustindex verifies that the original source of the review is Google. I’m so impressed with the service I received. The team was friendly, efficient, and professional. They took care of every detail, and my home looks amazing. I can’t thank them enough for the high-quality work!Posted on James MatthewsTrustindex verifies that the original source of the review is Google. Replaced siding, trim and gutters on front of house with Hardie board. Came out great. Crew came as scheduled and cleaned up every day. We love the new color.Posted on Michael RohanTrustindex verifies that the original source of the review is Google. The team was quick, careful, clean and the final decks look even better than expected. Would definitely use them again.Posted on Nina MercerTrustindex verifies that the original source of the review is Google. The work done was beyond what I expected. The team was punctual, professional, and really took the time to make sure the project was completed to a high standard. My home’s exterior looks amazing, and I’m extremely satisfied with the entire process.Posted on Sydney WardTrustindex verifies that the original source of the review is Google. What an excellent experience! The crew was professional and efficient, and they truly transformed the look of my property. They were respectful of my space, worked diligently, and the results speak for themselves. I would definitely recommend their services!Posted on Abigail ThomasTrustindex verifies that the original source of the review is Google. I couldn’t be more pleased with the exterior services I received. The team was knowledgeable, courteous, and made sure everything was done right. They completed the job on time, and my home looks incredible. I’m so happy with the outcome.Posted on Dylan HarrisonTrustindex verifies that the original source of the review is Google. I’m thrilled with the work done on my property. The team was prompt, professional, and made sure everything was completed to perfection. They were friendly and respectful, and the final result exceeded my expectations. My home looks better than ever!Posted on Adrian FoxleyTrustindex verifies that the original source of the review is Google. The team did an outstanding job with the exterior work on my home. They were professional, efficient, and really paid attention to the details. My home looks fantastic, and I’m so happy with the results. Highly recommend!
From triple-deckers near Winter Hill to Victorians in Spring Hill to renovated multi-families around Union Square, the roofing work changes block by block. Here’s what we handle.

OUR SERVICES
D&G Exteriors offers a wide range of exterior construction services in Somerville, MA. Contact us today for a free consultation and estimate!

Our roof replacement uses quality materials and expert installation to deliver a strong, weather-resistant finish. We ensure lasting protection that adds value to your home.

Our roofing services include installation, repairs, and replacements using top-quality materials. We ensure durable and attractive results that protect your home

We offer premium siding services, providing durable protection for your home while enhancing its curb appeal with modern, long-lasting materials.

Our window services include installations and replacements to improve energy efficiency and add natural light, all while complementing your home’s style.

We build and repair decks that transform your outdoor space into a functional and stylish area for relaxation and entertainment.
Repairs typically run $850–$3,000. Full replacements range from $14,000 to $30,000 depending on roof size, pitch, and deck condition. Somerville’s triple-deckers with both pitched and flat sections can run higher due to the dual-system approach and multi-story access requirements. We provide a written estimate after inspecting the roof in person.
Yes — and in Somerville, that’s the majority of our work. Triple-deckers typically have a pitched front section and a flat rear section, sometimes with a rubber membrane on a third-floor porch. We handle all of it — pitched, flat, transitions, and the tenant coordination that comes with an occupied multi-family building.
Heat escaping through poorly ventilated attics melts roof snow unevenly. The meltwater refreezes at colder eaves, backing water under shingles. Somerville’s triple-deckers are especially prone because heat from the lower two units rises through the building, supercharging the attic temperature. We address ventilation and install ice & water shield well beyond code minimum on every project.
Planning. Somerville has zero lot lines on many streets — buildings three feet apart, shared driveways, no side access. We plan material staging, dumpster placement, crane access (when needed), and debris containment before the project starts. Your project manager coordinates everything, including neighbor notification when scaffolding or access requires it.
Yes. EPDM and TPO membrane systems with proper seam welding, tapered insulation for drainage, and sealed transitions where flat meets pitched. In Somerville, flat roof work is as routine for us as shingle work — the city’s housing stock demands it.
Most single-family homes take 1–2 days. Triple-deckers typically take 2–4 days depending on roof sections and deck condition. Somerville’s access constraints can add staging time, but we build that into the schedule upfront.
Yes. The City of Somerville requires building permits for roof replacement. We handle the application, schedule inspections, and ensure the work meets current code. Somerville’s Inspectional Services department is busy — we coordinate the timeline so you’re not waiting.
CertainTeed Master Craftsman certified, Google Guaranteed, BBB Accredited with an A+ rating, and NRCA Affiliated. Every Somerville project gets the same standards whether it’s a single-family Victorian or a triple-decker.
Serving Somerville, MA, D&G Exteriors provides expert roofing services designed to protect your property and enhance its value. From installations to repairs, our durable and stylish solutions ensure long-term satisfaction. Contact us today to learn more about our professional services.