Roofing in Chelsea, MA

Chelsea packs more into less space than almost anywhere in Massachusetts. It's the smallest city in the state by land area and one of the most densely populated — a little over two square miles of tightly-built, mostly multifamily housing, hard against the water and the Tobin Bridge. The Mighty Dog Roofing of North Boston team works this ground constantly. We're not a referral service passing your name along, and our trucks aren't coming from two states away.

Chelsea's roofs reflect its history. Two catastrophic fires — the Great Chelsea Fire of 1908 and the second great fire of 1973 — leveled huge swaths of the city, and much of what stands today was rebuilt in the decades after 1908 as dense rows of two-, three-, and six-family wood-frame homes. That's the housing stock we work on here: closely spaced, largely built before 1940, and overwhelmingly rented. It's also, more than most cities we serve, a place of flat roofs — brick rowhouses, converted warehouses, and mixed-use blocks that carry low-slope membrane roofs instead of sloped shingles, alongside the multifamily homes that pair a shingle main roof with a flat one out back. Below is how we think about roofing in this specific city, and what we'd want you to know before you spend a dollar.

Neighborhoods and ZIP codes we serve in Chelsea

Chelsea runs on a single ZIP code — 02150 — with small edges shared with Everett. For a city this compact, it has a surprising number of distinct neighborhoods, and we cover all of them:

• Bellingham Square and the downtown core
• Chelsea Square and the Broadway commercial spine
• Admirals Hill and the waterfront
• Addison-Orange
• Bellingham Hill / Mount Bellingham
• The Box District
• Carter Park / Wyndham area
• Prattville and Mill Hill
• Powderhorn Hill and Mount Washington
• The Soldiers Home area and Island End waterfront

If you're not sure which neighborhood your building is technically in, it doesn't change anything for us — give us the address and we'll come look.

Roofing for Chelsea's rental and multifamily properties

Here's the fact that shapes roofing in Chelsea more than any other: roughly three-quarters of the city's homes are occupied by renters, not owners. That's one of the highest rental shares of any city in the state, and it sits on top of a housing stock that's mostly two- to six-family wood-frame buildings. A great many of these roofs cover someone other than the person responsible for maintaining them.

That creates a predictable and expensive pattern. The tenant living under the roof isn't the person who calls a roofer. The owner or property manager frequently lives elsewhere — sometimes out of state — and understandably isn't climbing up twice a year to check a roof that isn't leaking yet. So the roof gets no attention at all until a tenant reports a stain on the ceiling or a drip in a closet. By then, water has usually been getting in for a while.

In a densely stacked Chelsea multifamily, that delay costs more than it would almost anywhere else. Water that enters at the top works its way down through multiple units, so a single failed flashing detail — caught early, a modest repair — can turn into soaked decking, ruined insulation, and stained ceilings across several apartments, plus displaced tenants and the liability that comes with them. The roof didn't get dramatically worse; it just went unwatched.

If you own or manage rental property in Chelsea, this is exactly where we help:

• Proactive inspections for owners who don't live on site — we go up, you don't have to. You get a written report with photos (drone-assisted) you can keep on file for the property.
• Scheduled maintenance so small failures are caught on your timeline instead of a tenant's 2 a.m. phone call.
• Fast response when a tenant does report a leak — we find the source, stabilize it, and give you a straight repair-or-replace read.
• One point of contact across multiple properties if you own or manage more than one Chelsea building.

We're not here to talk you into work you don't need. But a roof you never look at is a roof you'll only hear about once it's already cost you.

Density, tight lots, and Chelsea's older housing stock

Chelsea's buildings sit close together — often just a few feet apart — and that density has real roofing consequences. Roofs abut neighbors, access is tight, and when snow melts or rain falls, the water has fewer places to go than it would on an open suburban lot. On a packed street of wood-frame three-families, small drainage and flashing problems turn into interior leaks faster. Density also means flat roofs: brick rowhouses and rebuilt blocks frequently carry low-slope membrane roofs across the whole building, and because much of Chelsea sits low and near sea level — partly within FEMA flood zones — water that ponds on those roofs has nowhere to drain and goes to work on the membrane.

The stock itself is old. The typical Chelsea home dates to before 1940, much of it built in the intense rebuilding that followed the 1908 fire, when time-consuming custom craftsmanship gave way to denser, more standardized multifamily housing for a fast-growing, largely immigrant city. These buildings are honest, sturdy, and worth maintaining — but old framing isn't always square, decking under decades-old shingles can be a mix of plank and plywood, and flashing details around dormers, additions, and party walls were often done by hand a long time ago. We plan for that instead of being surprised by it.

A note on historic districts. Chelsea's best-known historic areas — the Bellingham Square and Downtown Chelsea Residential districts, and the Naval Hospital district on Admirals Hill — are listed on the National Register of Historic Places. National Register status is largely honorific for a private owner: unlike a local (Chapter 40C) historic district, it generally does not impose design review on a routine re-roof of a privately owned home. That said, Chelsea does have a Historical Commission, and rules can change, so if your building is designated or you're planning more than a like-for-like replacement, it's worth confirming with the city first — and we'll help you figure out where your project lands.

About slate. A few of Chelsea's oldest surviving homes still wear original slate. We want to be straight with you: slate is rare here, and it is not our specialty. Genuine slate work — matching salvaged tiles, replacing a slate field, or rebuilding ornamental detailing — is a craft of its own. If your roof is slate and slate is the right answer, we'll tell you so and point you toward a dedicated slate specialist rather than pretend it's in our wheelhouse. Where it makes sense, we're glad to talk through asphalt as a practical alternative — but that's a conversation, not a default.

Asphalt shingle roofs, installed as a complete system

Most Chelsea homes are best served by a quality asphalt shingle roof, and this is the work we do best. We're an Owens Corning Platinum Preferred Contractor, which is the top tier of their contractor network and the reason we can install — and stand behind — the complete Owens Corning roofing system rather than a pile of loose parts.

That distinction is the whole point. A roof doesn't fail because the shingles were cheap; it usually fails at the edges, the valleys, and the penetrations. Installing the full system means every layer is doing 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 Chelsea's 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 attic breathes, which is what keeps the roof from cooking itself from below and feeding 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) — a Chelsea specialty

In most of the towns we serve, the flat roof is the part homeowners forget. In Chelsea it's often the whole roof. Between the brick rowhouses, the converted warehouses, the mixed-use blocks, and the flat-roofed additions on multifamily homes, low-slope roofing is a bigger share of the work here than almost anywhere in our area — so it's worth understanding well.

Flat roofs come in two flavors around Chelsea. On many buildings — rowhouses and rebuilt blocks — the flat rubber (EPDM) roof is the main roof, covering the entire top of the building behind a parapet wall. On others, a sloped, shingled main roof is paired with a smaller flat roof over a back porch, a piazza, a deck, or a dormered addition — and that's the one owners tend to ignore until the ceiling under it starts staining. Either way, the physics are the same: water doesn't run off a flat roof, it sits and waits for a weak point. The usual culprits:

• Seams and flashing. Where the rubber laps itself or meets 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 — a particular risk on Chelsea's low-lying, near-sea-level blocks, where drainage was never generous to begin with.
• Parapets, scuppers, and drains. On a full flat roof, water leaves through scuppers in the parapet wall or through internal drains. Clog one with leaves or ice, or let the parapet flashing age, and the water backs up and pools where it can do the most damage.
• Foot traffic and roof decks. If that flat roof doubles as a deck or a shared porch — increasingly common on Chelsea's renovated buildings — 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. This is New England, and the wildlife knows your attic is warm. Raccoons will claw and tear at a rubber membrane to get at a heated space underneath, and squirrels are notorious for gnawing at chimney flashing on the main roof. Animal damage is one of the most common flat-roof failures we get called about, and it's almost never on the owner's radar until there's a hole.

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 house — a cleaner, lower-risk install. 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 porches, 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 your whole roof or just the porch out back, it deserves at least as much attention as the shingles — and in Chelsea, usually more. 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 Chelsea roofs

You don't need us to tell you what winter does here, but the roofing consequences are specific.

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 and under the shingles, where it finds the seams and drips into the rooms below. The leak shows up at the edge of the roof and along the gutters, which is exactly why eave leak barriers matter so much. 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. On Chelsea's tightly packed streets, that meltwater has nowhere to go but into the building.

Snow load. Heavy, wet snow stacked on an aging or under-ventilated roof is a stress test, and structures that were already tired tend to reveal it in February. Flat roofs feel this most: snow doesn't slide off, it sits, and as it melts and refreezes at clogged scuppers and drains it ponds exactly where the membrane is weakest.

Nor'easters and wind. High-wind storms are especially hard on old 3-tab shingles: when the wind gets under a tab, it can peel whole shingles off in full pieces, leaving bare deck exposed. Modern laminate/architectural shingles are heavier, multi-layered, and far better at staying put — one of the strongest practical arguments for upgrading an old 3-tab roof rather than patching it again.

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

Our roofing services in Chelsea

• 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, we track it down before we patch it — figuring out where the water actually gets in is often the hard part.
• 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 Chelsea'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 fallen branch.
• 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 — repair and full replacement, whether the flat roof is the entire top of a rowhouse or just the porch, deck, or addition out back, including parapet flashing, scuppers, 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

Chelsea has always been a working, industrial city — a produce-market and waterfront hub with warehouses, mixed-use blocks, and light-industrial buildings alongside its housing. We handle commercial and industrial roofs across the North Boston area, Chelsea included:

• 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 Chelsea 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 Chelsea 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, which could lead to potential issues such as the trees surrounding 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 Chelsea'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 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 multifamily, 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 Chelsea'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 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 Chelsea building permits (and flag any historic step if your building is designated).
5. Schedule. We set a date that works around the weather and, for rentals, around your tenants.
6. Install. Our crew installs the complete system, protects your property, 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 your driveway, walkways, and any yard to pick up stray roofing nails.

Why owners in Chelsea choose us

• We're in the area constantly. Chelsea isn't a place we visit; it's part of our weekly territory.
• We know these buildings. Dense, tightly-spaced multifamily wood-frame homes, two- to six-family layouts, and the flat-roof-plus-shingle combination that defines so much of Chelsea — including what it takes to work on rental property with tenants in place.
• 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 Chelsea?

There's no honest flat number, because price follows the roof: its size and pitch, how many layers have to come off, the condition of the decking underneath, the number of valleys and penetrations, and whether there's a flat section in the mix. A small, simple roof and a stacked six-family with a porch roof 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. From the ground, you might see shingles that are curling, buckling, or cracked, bald patches where the protective granules have worn away, or shingles gone missing after a storm. In the attic, daylight coming through the boards or damp, 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. Age matters too — once an asphalt roof is past about twenty years, it's worth a look. 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.

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 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, valleys, and the roof edges — is where a large share of leaks begin, so putting new shingles over tired flashing would just build a new roof around an old problem. New roof, new flashing and edge metal.

How long does a new roof take to install?

In most cases, a roof replacement takes 1–2 days. The biggest variable is what we find once the old roof comes off: the condition of the sheathing underneath. If the decking is sound, we stay on schedule. If it needs substantial carpentry work — replacing rotted or soft sheathing before the new roof goes on — plan on about a day more. A few other things can stretch the timeline: the size and pitch of the roof, complex rooflines with lots of valleys and dormers (common on Chelsea's older multifamily homes), the number of chimneys and skylights to flash and seal around, and weather. We won't start a job we can't finish cleanly, so we watch the forecast and schedule around it.

I own a rental property in Chelsea — how do I stay ahead of roof problems?

This is the most useful question a Chelsea landlord can ask, because in a city that's roughly three-quarters renters, most roof damage gets discovered late — a tenant reports a leak long after water started getting in. The fix is simple: don't wait for the phone call. Have the roof looked at after any major storm, and put it on a periodic schedule (see below) even when nothing seems wrong. We do drone-assisted inspections with a written report you can keep on file for the property, and we can coordinate around tenants. Catching a bad flashing detail early is a modest repair; finding it after months of leaking can mean damage across several units.

How often should I have my roof inspected?

You do not need an annual inspection — that's overkill for most homes. The sensible rhythm is: get up there (or send us up) after any major storm, and otherwise about once every two years once the roof passes 15 years old. One caveat for Chelsea: if you own rental property and don't live under the roof yourself, lean toward the more frequent end, since no one on site is keeping an eye on it day to day.

How long does a roof last?

A quality architectural-shingle roof, properly installed and ventilated, can last decades. But here's the part people miss: the shingle field is rarely what fails first — the penetrations and accessories are. Rubber pipe boots around plumbing vents typically fail in roughly 15–20 years, because that exposed rubber takes direct UV that the shingles are designed to shrug off. Chimney flashing is worth checking once a roof passes 20 years. And tree-branch damage and moss or algae growth can shorten the life of any roof regardless of age. The shingles are usually fine long after the little parts need attention.

If your roof is a flat EPDM rubber membrane rather than shingles — as many Chelsea roofs are — a well-installed one generally lasts about 20 to 30 years, with thicker membrane (60-mil versus 45-mil) and less ponding and foot traffic pushing you toward the upper end. And the pattern is the same as on a shingle roof: the field of the rubber usually outlasts the details around it. Seams, the flashing where the membrane meets walls and curbs, and the edge and parapet terminations are what tend to open up first, which is why a flat roof is worth a look at its seams and flashings well before the membrane itself wears out.

Should I repair my roof or replace it?

If the damage is localized — a few shingles, one bad 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 areas repeatedly, you're spending good money to delay the inevitable, and 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 shingles, or do you tear off?

We tear off. Mighty Dog Roofing of North Boston does not install new shingles over an existing roof — every replacement we do starts with a complete tear-off down to the deck. It's worth knowing where the code sits, because owners often ask: Massachusetts building code (780 CMR) allows a maximum of two layers of asphalt shingles, so if your building currently has a single layer, an overlay would technically be permitted. We don't do it anyway. A layover looks like it saves money on labor and disposal, but that's an illusion — you're not avoiding those costs, just pushing them down the road to whenever the roof finally comes off. And with a few years of inflation and rising material prices in between, that future tear-off almost always costs more than it would today. So there's no real saving. What a layover actually does is hide the deck — so no one can see or fix the rot, soft spots, or failed flashing that Chelsea's freeze-thaw winters tend to leave behind.

My roof looks dull or dusty from the street — is that a problem?

It can be. That worn, dusty look is often granule loss — the protective mineral granules washing off the shingle and exposing the asphalt base underneath to direct UV. Once the asphalt is exposed, it dries out and degrades faster, so a roof that merely looks tired can be aging quicker than its years suggest. It's worth a look.

Do I need a permit to replace my roof in Chelsea?

Yes. A building permit is required to replace a roof in Chelsea, and we apply for it as part of the job. Chelsea's best-known historic areas are National Register districts, which generally don't restrict a private homeowner's re-roof — but if your building is specifically designated or you're doing more than a like-for-like replacement, there may be an extra step, and we'll flag it early so it doesn't slow you down.

Do you work on slate roofs?

Rarely, and it's not our focus. Slate is a specialized craft, and when slate is genuinely the right answer for your home we'll point you to a dedicated slate specialist rather than overreach. If you'd like, we can also talk through whether a quality asphalt system is a sensible alternative for your situation.

Most of the roofs on my block are flat — do you replace whole flat roofs, or just porches?

Both. A lot of Chelsea's rowhouses, converted warehouses, and mixed-use buildings have a flat, low-slope EPDM roof across the entire building rather than sloped shingles, and we repair and fully replace those — membrane, parapet flashing, scuppers, and drainage included — not just the small flat sections on multifamily homes. Flat and low-slope work is a routine part of what we do in this city, on both the residential and commercial side.

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, shingle, or seam 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 shingles. Either way we find the source first, then fix it: for rain leaks that means the failed flashing or shingle 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.

Do you do emergency roof repairs?

Yes. After wind, ice, or a fallen branch 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 in the Chelsea area.

Which Chelsea neighborhoods do you serve?

All of them — Bellingham Square, Chelsea Square, Admirals Hill, Addison-Orange, Bellingham Hill, the Box District, Carter Park/Wyndham, Prattville, Mill Hill, Powderhorn Hill, Mount Washington, and everywhere in between, across ZIP code 02150.

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.