Level 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
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AfterFast, Reliable Chimney Repair Across Somerville
Chimney repair in Somerville typically costs between $350 for minor mortar repointing and $4,500 for partial stack rebuilding, with most jobs completed in a single visit after a Level 2 camera inspection. If your Somerville triple-decker has a shared chimney stack serving multiple units, degraded mortar between flues can let combustion gases cross from one apartment into another - a problem our crews diagnose and fix regularly in neighborhoods from Winter Hill to Magoun Square. Call (781) 905-8338 and a live person will answer, 24 hours a day.
We’ve been dispatching crews to Somerville from our Boston office for decades. We know the brick stacks on Highland Ave, the triple-deckers packed along Broadway, and the way Somerville’s freeze-thaw cycles chew through century-old mortar joints that were never meant to handle modern gas appliances. Our Chimney Repair team doesn’t guess at what’s wrong. We run a camera, show you the photos, and give you a plain-English verdict before any work starts.
Why Hearthstone Chimney Co. Is Somerville’s Preferred Chimney Repair Company
Homeowners and landlords in Somerville call us because we’ve been answering the phone with a live person for over 42 years, and we plan to be here in thirty more. That changes how you treat a customer. Our 90-Day Done Right Promise is in writing with no arguing - if it’s not right, we come back. No paperwork shuffle, no finger-pointing.
Our technicians are background-checked, uniformed, and carry professional-grade materials from Olympia Chimney, Famco, and DuraFlex so most Somerville repairs finish in one visit. We don’t leave you waiting on parts or callbacks. The price we quote is the price on the invoice - a square deal, no surprises on the bill.
We understand Somerville’s housing stock because we work in it constantly. Roughly 80-90% of residential buildings here went up between 1880 and 1930, with the triple-decker dominant throughout East Somerville, Winter Hill, and Magoun Square. These stacks were sized for coal or oil, not modern gas furnaces or wood inserts. Most never had a flue liner installed. We see the same patterns so often we can spot them fast, but we still verify with a camera every single time.
Our Chimney Repair Services in Somerville
Mortar Repointing
Mortar repointing in Somerville runs $350-$900 for a typical triple-decker stack, depending on how much joint has eroded above the roofline. Freeze-thaw cycling from November through March turns old lime mortar to powder, especially on south- and west-facing exposures that get the most sun-thaw stress. We grind out failed joints to proper depth and pack in fresh, matched mortar that moves with the brick instead of cracking against it. Done right, and we stand behind it.
Spalling Brick Repair
Spalled brick repair in Somerville typically costs $800-$2,200. When water gets behind the face of a brick and freezes, it pops the face off like a lid. You’ll see this on chimney crowns and the top four or five courses most often, right where Somerville’s wind-driven rain hits hardest. We remove damaged units, install matching brick where possible, and seal the crown to stop the cycle. Every spall tells a story about water entry - we find the source before we patch the symptom.
Chimney Waterproofing
Chimney waterproofing for a Somerville triple-decker stack runs $600-$1,400. Breathable silane-siloxane sealers keep liquid water out while letting vapor escape - critical on these old masonry walls that were never designed to be sealed like a bathtub. We apply it after any repointing or brick repair, never before, because trapping moisture behind a sealant accelerates the damage you’re trying to stop. The work comes with our 90-Day Done Right Promise in writing.
Flashing Repair
Flashing repair in Somerville costs $400-$950 for standard step-flashing replacement, more if the chimney saddle or cricket needs rebuilding too. Somerville’s older roofs often have original flashing that was tarred over repeatedly instead of properly replaced. We install new copper or galvanized step flashing with proper counterflashing reglets, sealed with professional-grade compounds from Copperfield. No roof cement slathered on as a Band-Aid - that’s not a repair, that’s a postponement.
Chimney Rebuilding
Partial chimney rebuilding in Somerville ranges from $2,800-$4,500 for the top third of a triple-decker stack, including teardown to sound masonry, new flue partitions where needed, and a poured concrete crown with proper drip edge. Full rebuilds are rare - most Somerville stacks have solid brick below the roofline even when the top is wrecked. We rebuild only what the camera shows is necessary, and we show you those photos before we quote.
Tuckpointing
Tuckpointing - the fine art of cutting narrow grooves in mortar joints and filling them with contrasting putty for a crisp, uniform look - runs $500-$1,200 on Somerville’s historic facades where appearance matters as much as function. We match existing joint profiles and color so the repair disappears into the wall. This is craft work, not maintenance, and we treat it accordingly.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Somerville
We stock professional-grade materials from Olympia Chimney, Famco, and DuraFlex at our Boston office, so Somerville jobs don’t wait on shipping. Olympia Chimney’s stainless liners handle the conversion of old coal flues to modern gas appliances. Famco caps and dampers fit the odd sizes we find on pre-war stacks. DuraFlex liners flex through offsets that rigid pipe won’t negotiate. No builder-grade substitutes, no “this is just as good.” The brands are on the truck because they’ve proven themselves in Somerville’s actual chimneys.
Common Chimney Repair Problems We See in Somerville Homes
- Failed mortar between adjacent flues in triple-decker stacks. The mortar web separating two or three masonry flues in a single stack crumbles over time, letting smoke and carbon monoxide migrate from one unit’s appliance into a neighbor’s flue. Invisible without a camera. Routinely misdiagnosed as a draft problem by inspectors who don’t run one.
- Unlined flues with modern appliances shoehorned in. Century-old stacks sized for coal or oil get a gas furnace or wood insert dropped in without a listed flue liner. Clearances are wrong. Draft is wrong. The appliance may “work” for years while slowly destroying the masonry and creating a fire or CO hazard.
- Freeze-thaw spalling on crowns and upper courses. Eastern Massachusetts freeze-thaw cycles from November through March - sub-freezing nights, daytime thaws, repeat - pop brick faces and erode mortar joints above the roofline. Water paths open, then travel down to worsen flue separation below.
- Improper or tarred-over flashing on low-slope roofs. Somerville’s triple-deckers often have shallow-pitch roofs where water drains slowly. Original flashing fails, gets covered in roofing cement, and leaks into the attic and wall cavities for years before anyone notices the stain.
Pricing for Chimney Repair in Somerville, MA
| Service | Typical Range in Somerville |
|---|---|
| Mortar repointing (partial stack) | $350 - $900 |
| Spalled brick repair (localized) | $800 - $2,200 |
| Chimney waterproofing | $600 - $1,400 |
| Flashing repair / replacement | $400 - $950 |
| Tuckpointing (cosmetic) | $500 - $1,200 |
| Partial chimney rebuilding (top third) | $2,800 - $4,500 |
These are real numbers for Somerville’s market, not teaser rates. What moves a job up or down: how many courses need work, whether flue partitions must be rebuilt, access complexity on tight Somerville lots, and whether the crown or flashing needs attention too. We give you one upfront price before any work starts - the number on the estimate is the number on the invoice. Estimates are free. Call (781) 905-8338.
We Also Serve Cities Near Somerville
Our crews work throughout the metro area, and we regularly schedule Chimney Repair in Somerville alongside jobs in Medford, Belmont, Brookline, and Winchester. Same standards, same materials, same live person answering the phone. If you’re a landlord with properties across multiple towns, we can coordinate inspections and keep your records straight.
Serving Somerville, MA - Our Local Coverage Area
We’re based in the Somerville area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Chimney Repair in Somerville
Each unit should have its own dedicated flue, separated by masonry partitions inside the shared stack, though Somerville’s older buildings sometimes have undocumented modifications. We map the flue layout with a camera during our Level 2 inspection and label what we find so every landlord and tenant knows which appliance vents where. Call (781) 905-8338 to schedule - estimates are free.
Yes. When the mortar partition between flues fails, combustion gases from one unit can cross into an adjacent flue and backdraft into a neighboring apartment. We were called to a triple-decker off Highland Ave in Winter Hill after a second-floor tenant kept smelling furnace exhaust that the first-floor landlord swore wasn’t there. Our tech ran a Level 2 inspection with a camera down the shared stack and found the mortar partition between the two flues had crumbled, letting the lower unit’s gases cross over and backdraft into the upstairs apartment. We rebuilt the flue divider and repointed the joint, and the smell stopped - the camera footage is on the homeowner’s phone. This failure mode is specific to multi-flue stacks and simply doesn’t exist in single-family homes.
It was normal for the era, but it’s not safe for modern use. Most Somerville chimneys built before 1940 were never lined because they were sized for coal or oil appliances that ran hotter and wetter than today’s gas furnaces. Dropping a modern appliance into an unlined flue means wrong clearances, wrong draft, and accelerated masonry deterioration. We install listed stainless liners from DuraFlex or Olympia Chimney sized to your appliance, not the other way around. Call (781) 905-8338 for a camera inspection and exact quote.
Never. Every recommendation we make follows a Level 2 camera inspection with photos you can see and a plain-English verdict. If we can’t show you the problem, we don’t ask for the work. The industry’s worst upselling happens when a sweep points at a chimney from the ground and declares it needs thousands in liner or masonry work. We document like an engineer and explain like a craftsman. Photos you can see, a plain-English verdict - that’s the standard.
We recommend annual Level 2 inspections for any multi-unit stack in Somerville, and more frequently if tenants report odors, draft issues, or visible deterioration. The freeze-thaw cycle here is relentless, and the consequences of failed flue separation fall on landlords legally as well as financially. A yearly camera inspection catches mortar degradation before it becomes a crossover event. Call (781) 905-8338 to set up a schedule that protects your property and your tenants.
Ready to see what’s actually going on inside your chimney? Call (781) 905-8338 now. A live person answers 24 hours a day, 7 days a week. We’ll schedule your free estimate, run the camera, and give you the straight story - photos, verdict, and upfront pricing with no surprises on the bill. The 90-Day Done Right Promise covers every job in writing. Done right, and we stand behind it.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Somerville and local communities for over 42 years.