Roofing in Boston, MA

Boston is a city of dense, historic housing, and its rooftops are as varied as its neighborhoods — brick rowhouses and brownstones downtown, three-deckers block after block through the streetcar neighborhoods, flat-roofed condos, and everything in between. That variety, plus the age and density of the buildings, makes roofing in Boston its own discipline. The Mighty Dog Roofing of North Boston team works throughout the city, and its tightly packed, older housing is exactly the kind of roofing we do best.

Roofing here comes down to a few things Boston has more of than most places: flat and low-slope roofs on rowhouses, brownstones, and three-deckers; tight urban access on narrow streets with nowhere to stage; and historic buildings — some in districts with real design review. Add older roofs that have often been patched and layered over the decades, and you have roofing that rewards a crew who knows the city's buildings. Below is how we think about it, and what we'd want you to know before you spend a dollar.

We serve Boston as part of our North Boston service area. We don't keep a separate Boston storefront — but we're in the city and its neighborhoods regularly.

Neighborhoods we serve in Boston

Boston spans dozens of neighborhoods and many ZIP codes, and we cover the city broadly, including:

• East Boston and the waterfront
• Charlestown and the North End
• Beacon Hill and Downtown
• Back Bay and the South End
• South Boston and the Seaport
• Dorchester, Roxbury, and Jamaica Plain

Wherever your roof is — a brownstone in the South End, a three-decker in Dorchester, or a condo in East Boston — give us the address and we'll come look.

Roofing for Boston's rowhouses, brownstones, and triple-deckers

This is the heart of roofing in Boston. Much of the city's housing is attached, stacked, and close together, and those buildings share a few traits that shape everything we do here.

Many are flat or low-slope. Behind a rowhouse or brownstone parapet, and on top of a three-decker, the roof usually runs flat or nearly flat, so it isn't shedding water so much as holding it until it drains. That puts the pressure on the membrane, the seams, and the flashing rather than on shingles (more on flat roofs below).

They're packed tight, with difficult access. Narrow one-way streets, no driveways, shared walls, and neighbors a few feet away mean staging a roof job in the city takes planning — where the dumpster goes, how materials get up, how we protect the building next door. We sort that out before we start rather than discover it on day one.

They share walls, so a leak isn't one owner's problem. On an attached or stacked building, water that gets in at the top works its way down through every unit below. Getting it right the first time matters more here than almost anywhere, and we're used to coordinating with owners, condo trustees, associations, and property managers.

Many have decades of history under the roofing. Older Boston roofs often carry a long record of patches and past work. When a roof has been worked on repeatedly, the real source of a leak can be hard to find — which is exactly why we track it down before we start, instead of patching over it again.

Boston's historic districts and permitting

Boston takes its history seriously, and for some properties that means real design review — so it's worth knowing where your building stands before any work begins.

Roofing permits are filed with the City of Boston's Inspectional Services Division, and a permit is required to replace a roof. On top of that, Boston has a number of local historic districts overseen by the Boston Landmarks Commission — among them Beacon Hill, Back Bay, the South End, Bay Village, and several architectural conservation districts. If your property sits in one of those districts, exterior work visible from a public way — which can include roofing material and color — may need the Commission's approval before a permit is issued. There are also individually designated landmark buildings throughout the city.

The good news: most of Boston is not inside one of those districts, and a typical re-roof there just needs the standard city permit. If your building is in a historic district or is individually landmarked, we'll flag it early and help you sort out the review before we schedule the work.

Asphalt shingle roofs, installed as a complete system

Where a Boston roof is pitched — on a single-family, the sloped section of a rowhouse, or a three-decker with a peaked roof — a quality asphalt shingle system is usually the right answer. We're an Owens Corning Platinum Preferred Contractor, the top tier of their contractor network, which is why we can install and stand behind the complete Owens Corning system rather than a pile of loose parts.

A roof rarely fails because the shingles were cheap; it fails at the edges, the valleys, and the penetrations. Installing the full system means every layer does its job:

• Synthetic underlayment across the deck as a secondary water barrier
• Leak barriers (ice-and-water membrane) at the eaves and in the valleys — the exact spots where ice dams push water backward
• Starter shingles along the eaves and rakes so wind can't get under the first course
• Shingles — modern laminate/architectural shingles that lie flat and hold their line
• Hip and ridge caps finished to match
• Ventilation — balanced intake and exhaust so the roof doesn't cook from below or feed ice dams from above

Installed as a system, the components are also what make the manufacturer warranty coverage meaningful. Installed piecemeal, you've just got shingles.

Flat and low-slope roofing (EPDM and modified bitumen)

In Boston, the flat roof isn't an afterthought — on a rowhouse, a brownstone, or a three-decker, it's often the whole roof. So this is work we do constantly, and we install two different low-slope systems depending on the roof.

A flat rubber (EPDM) roof is simpler in principle and less forgiving in practice, because water doesn't run off; it sits and waits for a weak point. The usual culprits:

• Seams and flashing. Where the rubber laps itself or meets a parapet, a wall, a chimney, or a railing post is where most flat roofs let go first.
• Ponding. Standing water that never drains accelerates aging and finds the smallest gap.
• Roof decks and foot traffic. A lot of city roofs double as decks for the views. Every footstep, planter, and dragged chair works against the membrane.
• Age and shrinkage. EPDM shrinks as it ages, pulling at its own edges and flashings until a seam opens.
• Animals. Even downtown, wildlife finds the roofline. Raccoons will claw and tear at a rubber membrane to reach a warm space beneath it, and squirrels work at chimney flashing.

Modified bitumen: our two-ply low-slope system

Beyond EPDM, we also install a two-ply modified bitumen system on low-slope roofs — a TopShield base ply (PlyBase) covered with a granulated cap sheet. It goes down as a self-adhered, peel-and-stick membrane, so there's no torch, kettle, or hot asphalt anywhere near your building — a cleaner, lower-risk install, which matters a great deal on an occupied city building. The base ply seals to the deck and the cap sheet takes the weather and the sun, giving you a tough, two-layer membrane for parapets, additions, and larger low-slope sections alike. Whether EPDM rubber or a modified-bitumen cap sheet is the better fit depends on the roof, and we'll walk you through the choice.

Whether the flat roof is the whole top of your building or just a low-slope section out back, we inspect, repair, and fully replace flat and low-slope roofs — and we'll look at yours as part of any visit to your property.

New England weather and Boston roofs

Boston gets the full New England winter, and it lands hard on older, flat-roofed city buildings.

Ice dams. When snow on an upper roof melts, runs down to the cold eave, and refreezes, it builds a dam of ice that forces meltwater backward — up under the shingles or behind a parapet, where it finds the seams and drips into the units below. The Blizzard of 2026 capped one of the snowiest Boston-area seasons in years, and the repeated freeze-thaw that came with it was a textbook ice-dam machine.

Snow load. Heavy, wet snow stacked on an aging or under-ventilated flat roof is a stress test, and older buildings tend to reveal it in February.

Nor'easters and wind. High-wind storms are especially hard on old 3-tab shingles and on the edges of a flat membrane; modern laminate/architectural shingles and properly fastened edge metal hold far better. Buildings near the harbor catch extra wind and salt.

Freeze-thaw. The daily cycle of melting and refreezing works open every small gap it can find — around flashing, in aging sealant, at the seams of a flat roof — a little more each winter.

Our roofing services in Boston

• Roof repair and leak investigation — leaks, storm damage, failed flashing, missing shingles, problem valleys, and nail pops. When the source of a leak isn't obvious — and on a patched city roof it often isn't — we track it down before we patch it.
• Roof replacement — full tear-off and a complete Owens Corning system, sized and detailed for your building.
• Chimney flashing repair — the flashing and step flashing where a masonry chimney meets the roof is one of the most common leak points on Boston's older buildings. We repair and reseal these details to stop the leaks that start there.
• Roof inspection — free, drone-assisted, with a written report and photos you keep, whether or not you hire us.
• Storm and emergency response — fast tarping and stabilization after wind, ice, or a storm.
• Roof snow clearing — after heavy snowfall, we can remove built-up snow from the roof to reduce the load it places on the structure.
• Flat and low-slope EPDM and modified bitumen — repair and full replacement, from a whole rowhouse roof to a low-slope section out back, including parapet flashing and drainage.
• Beyond the roof — siding, replacement windows, gutters, and skylights (installation, replacement, and leak repair), so the whole exterior works together and the water goes where it should.

Commercial and industrial roofing

Boston's business districts and mixed-use blocks mean a lot of commercial roofing, and we handle commercial and industrial roofing across the area:

• Membrane roof systems — EPDM and other commercial membrane systems suited to low-slope commercial roofs.
• Drainage and ponding fixes — correcting the standing-water problems that quietly destroy flat commercial roofs.
• Inspections and maintenance programs — scheduled care that catches small failures before they become interior damage and downtime.
• Emergency response — rapid stabilization to protect the building and what's inside it.

Optional extended warranty (commercial only). On a full commercial EPDM installation, the property owner can optionally add an RPI full-system warranty — 40 years on the EPDM membrane and 20 years on labor and accessories. It's an add-on, entirely the owner's call, and we'll lay out the cost and terms so you can decide. Please note this warranty applies to commercial roofs only — it is not available on one-family residential flat roofs.

Siding Replacement and Repair Services

Looking to make a statement and be the envy of your neighbors? Refresh the look of your home with new siding. Increasing your home's curb appeal will only help increase its resale value, an investment worth making. Protect your home from the weather elements while improving your insulation and reducing roof maintenance issues for the longevity of your exterior.

Types of Siding

• James Hardie fiber cement
• Vinyl
• Red cedar shakes and shingles
• Red cedar clapboards

Window Installation Services

Your windows can be the statement of your exterior's beauty. High-efficiency new and replacement windows with industry-leading warranties can add function, comfortability, and energy savings to your home, increasing the resale value. Walking into a bright space with many windows will give your family and guests a comfortable and cheery environment to enjoy. Be sure to keep the energy rating documentation for your new windows to share with prospective buyers. Mighty Dog professionals will consult with you for the best options for your Boston Massachusetts home. Let us do the homework for you.

Types of Windows

• Single Hung
• Double Hung
• Slider
• Picture
• Patio Door
• Casement

Gutter Installation Services

Gutters can be mostly functional or the envy of your neighbors. Either way, Mighty Dog Roofing is the company you can trust with your gutter repair & installation needs. We can install the right type of gutter with comprehensive warranty coverage to meet your needs, from seamless aluminum gutters with baked-on enamel finish to custom copper gutters and downspouts. It is your choice, but our Mighty Dog Pledge gives you peace of mind by making sure we safely and effectively move rainwater from your Boston Massachusetts home's exterior.

We will accurately assess your gutter project needs and the current system for any repairs or updates that might be warranted. Our expert project managers will review the bigger picture around the perimeter of your home, and any drainage issues we see around your foundation.

Types of Gutters

• Aluminum Seamless Gutters
• Copper Gutters

Gutter guard and flashing installation

On Boston's tightly packed streets, water that overflows a clogged gutter has nowhere good to go — it spills over the back edge onto the fascia, runs down the brick and siding, and pools between closely spaced buildings. Gutter guards keep leaves and debris out and the gutters flowing, so rain drains off the building instead of backing up — which matters even more on a stacked rowhouse or three-decker, where a small problem can reach more than one unit. We can add them to your existing gutters or install them as part of a new gutter system.

We also install gutter flashing — aluminum flashing set behind the drip edge and over the gutter, so runoff is carried over the back edge and into the gutter instead of slipping behind it. That's what keeps the wooden fascia and soffit boards from staying wet and rotting out — a common and expensive problem on Boston's older wood-frame buildings when that flashing is missing or has failed.

From first call to final inspection

We keep the process the same every time so there are no surprises:

1. Inspect. We come out and look at the whole roof — including the flat sections, parapets, and penetrations — and document what we find.
2. Measure. We take precise measurements so the estimate reflects your actual roof, not a guess.
3. Estimate, in writing. We provide a complete written estimate and review it with you. Nothing moves forward until you've signed off on it.
4. Permits. We apply for the required City of Boston building permits (and flag any historic-district step if your building is in one).
5. Schedule. We set a date that works around the weather, the access, and your building.
6. Install. Our crew installs the complete system, protects your property and your neighbors', and cleans up the site.
7. Final walkthrough and city inspection. We walk the finished roof with you and file for the city's final inspection so the job is closed out properly.

Protecting your property during a roof replacement

A roof replacement is a messy job, and how a crew handles that says a lot about them. Before we start, we take steps to protect the area around your building and shield your deck, patio furniture, and AC unit from falling debris. When the work is done, we remove the debris and run a magnetic sweep across the sidewalk, driveway, and any yard to pick up stray roofing nails.

Why Boston owners choose us

• We know city buildings. Rowhouses, brownstones, three-deckers, parapet flat roofs, and the tight-access, coordinate-with-the-neighbors, mind-the-historic-district reality of roofing in Boston.
• We're in the city constantly. Boston is part of our regular territory, not a place we visit.
• Owens Corning Platinum Preferred Contractor — the top tier of Owens Corning's network, installing the complete system.
• Licensed and insured, with the documentation to prove it before we set foot on your roof.
• Free, no-pressure inspections — drone-assisted, with a written report and photos you keep.
• The Mighty Watchdog Warranty standing behind our work.
• Financing available, so a sudden roof problem doesn't have to become a financial emergency.

Frequently asked questions

How much does a new roof cost in Boston?

There's no honest flat number, because price follows the roof: its size, whether it's flat or pitched, how many layers have to come off, the condition of the decking underneath, the flashing and parapet detail, how tough the access is, and whether the building is in a historic district. A small flat rowhouse roof and a full three-decker are very different jobs. What we can tell you is that our estimate is all-in, with no surprises tacked on later. Our estimate includes: all the materials needed to complete the project, labor, all permits, dumpster and disposal to the landfill. The right way to get a real figure is a free inspection and a written estimate — and we'd rather quote your actual roof than throw out a number that changes the day we get up there.

Are you licensed and insured?

Yes. Mighty Dog Roofing of North Boston is fully licensed and insured — Massachusetts licensing, general liability coverage, and workers' compensation.

What warranty do you offer?

Your roof is covered on two levels. The materials carry the manufacturer's warranty from Owens Corning, whose complete system we're certified to install as a Platinum Preferred Contractor. On top of that, our own Mighty Watchdog Warranty covers our workmanship for five years: if a leak develops because of how the roof was installed, we come back and make it right — labor, materials, and disposal all included, at no cost to you. Put simply, the manufacturer stands behind the shingles, and we stand behind the installation.

Do you offer financing?

Yes. A roof usually isn't a planned purchase — it's something that goes wrong at an inconvenient time — so we offer financing to keep a sudden roof problem from becoming a financial emergency. We'll walk you through the options so you can spread the cost out and still get the work done when it needs doing.

How do I know if I need a new roof?

A few signs are worth watching for. On a flat roof, look for blisters, splits, or open seams in the membrane, and standing water that never drains. On a pitched roof, watch for shingles that are curling, buckling, or cracked, bald patches where the granules have worn away, or shingles gone missing after a storm. Inside, damp or stained spots after rain point to a roof letting water in. And a roof that leaks in more than one place, or that you're patching again and again, is usually telling you it's near the end. The honest way to know is a free inspection: we'll tell you whether you need a new roof or whether yours has years left in it.

Do I need historic-district approval to re-roof in Boston?

It depends on where your building is. Boston has several local historic districts — Beacon Hill, Back Bay, the South End, Bay Village, and others — where exterior work visible from the street can require Boston Landmarks Commission approval before a permit is issued, and there are individually landmarked buildings throughout the city. Most of Boston isn't in one of those districts, where a re-roof just needs the standard city permit. We'll help you check your address before any work begins.

Can you replace a roof in winter?

Yes — we work year-round. New England winters don't stop roofs from failing, so they don't stop us from fixing them; asphalt shingles and low-slope membranes can be installed safely in cold weather when the work is sequenced and detailed correctly. What we won't do is start a job we can't finish cleanly, so we watch the forecast and schedule around snow and storms. If your roof fails in February, you don't have to wait until spring.

Do you replace the flashing and drip edge when you install a new roof?

Yes. Because every roof we replace is a full tear-off down to the deck, we install new flashing and drip edge as part of the new system rather than reusing the old metal. Flashing — around chimneys, walls, parapets, valleys, and the roof edges — is where a large share of leaks begin, so putting a new roof over tired flashing would just build a new roof around an old problem. New roof, new flashing and edge metal.

I own a condo or a multi-family building — is roofing it different?

Yes. The roof is often flat or low-slope rather than shingled, the building shares walls, and a leak at the top reaches every unit below. That means the membrane, the seams, and the parapet flashing all matter more than on a single-family, and there's usually more than one owner to coordinate. We work for owners, condo trustees, associations, and property managers, and we're used to getting the job done with people living in the building.

How long does a new roof take to install?

Most roof replacements take 1–2 days. The biggest variable is what we find once the old roof comes off — the condition of the decking underneath. If it's sound, we stay on schedule; if it needs carpentry work before the new roof goes on, plan on about a day more. In the city, tight access can add time too, since materials and debris have to move through narrow streets. We won't start a job we can't finish cleanly, so we watch the forecast and schedule around it.

How long does a roof last?

A quality architectural-shingle roof, properly installed and ventilated, can last decades — but the shingle field is rarely what fails first. The penetrations and accessories are: rubber pipe boots around vents typically fail in roughly 15–20 years, and chimney flashing is worth checking once a roof passes 20 years. If your roof is a flat EPDM or modified-bitumen membrane — as many Boston roofs are — a well-installed one generally lasts about 20 to 30 years, with thicker membrane and less ponding and foot traffic pushing you toward the upper end. On a flat roof too, the field usually outlasts the details: seams, flashing, and edge terminations tend to open up first.

Should I repair my roof or replace it?

If the damage is localized — a bad seam, one flashing detail, a single leak — and the roof is otherwise sound and not too old, repair is the smart money. If the roof is near the end of its service life, leaking in more than one place, or you're patching the same spots repeatedly, replacement usually wins. We'll give you the honest read after we inspect, including when the answer is "this roof has years left in it."

Can you roof over my existing roof, or do you tear off?

We tear off. Mighty Dog Roofing of North Boston does not install a new roof over an existing one — every replacement starts with a complete tear-off down to the deck. Massachusetts building code (780 CMR) allows a maximum of two layers of asphalt shingles, so a single-layer roof could technically be overlaid, but we don't do it. A layover looks like it saves money, but that's an illusion — you're just pushing the tear-off cost down the road, where inflation makes it more expensive later. Worse, it hides the deck, so no one can see or fix the rot, soft spots, or failed flashing underneath. On a flat roof it's the same story: a new membrane over an old, wet one just traps the problem.

Do you work on slate roofs?

Rarely, and it's not our focus. Boston has plenty of historic slate roofs, and slate is a specialized craft — when it's genuinely the right answer we'll point you to a dedicated slate specialist rather than overreach. We're glad to talk through whether a quality asphalt or membrane system is a sensible alternative for your situation.

Why does my roof leak — and does the season matter?

The season is a clue to the cause. A roof that leaks during heavy rain, any time of year, usually has a flashing, seam, or membrane problem letting water in. A leak that shows up only in winter, without rain, is the classic sign of an ice dam — snow melts on the warmer upper roof, refreezes at the cold eave, and the ice pushes water back up under the roofing. Either way we find the source first, then fix it: for rain leaks that means the failed flashing, seam, or membrane detail, and for ice dams the fixes we handle are proper eave leak barriers and better attic ventilation to keep the roof deck cold and even.

How often should I have my roof inspected?

You don't need an annual inspection. The sensible rhythm is a look after any major storm, and otherwise about once every two years once the roof passes 15 years old — a little sooner for a flat roof, since ponding and seam wear are worth catching early.

Do you do emergency roof repairs?

Yes. After wind, ice, or a storm opens up your roof, we respond quickly to tarp and stabilize it so the damage stops getting worse, then come back to do the permanent repair properly.

Do you do commercial or industrial roofing?

Yes — membrane systems (EPDM and other commercial membranes), drainage and ponding corrections, scheduled inspection and maintenance programs, and emergency response for commercial and industrial buildings across the Boston area.

Which Boston neighborhoods do you serve?

We cover the city broadly — East Boston, Charlestown, the North End, Beacon Hill, Downtown, Back Bay, the South End, South Boston, Dorchester, Roxbury, Jamaica Plain, and more. Give us your address and we'll confirm.

Book your free inspection

Call the Mighty Dog Roofing of North Boston team at (617) 934-4336, or use the form on this page to schedule a free, no-pressure, drone-assisted inspection with a written report you keep.