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.
Fast, Reliable Chimney Repair Across Somerville
Chimney repair in Somerville, MA typically costs $350-$2,800 depending on whether you need mortar repointing, partial rebuilding, or full chimney restoration. Most repairs are completed in a single visit, and every job starts with a Level-2 camera inspection so you see exactly what we see before any work is approved. Call (857) 597-5950 - a live person answers 24 hours a day, and we dispatch to Somerville from our Boston office.
We’ve been working on Somerville chimneys for over 42 years. We know the triple-deckers off Highland Avenue in Winter Hill, the attached brick rows near Davis Square, and the converted condos along Broadway. These aren’t generic chimneys. They’re 100-year-old brick stacks, most built with soft lime mortar that has taken a beating through decades of freeze-thaw cycles and multiple fuel conversions - coal to oil to gas, sometimes without proper relining. When we show up, we don’t guess. We run a camera, show you the footage, and tell you plainly what needs fixing now, what can wait, and what isn’t your problem at all.
Why Hearthstone Chimney Co. Is Somerville’s Preferred Chimney Repair Company
Somerville homeowners call us because we’ve earned a reputation for refusing to sell work that isn’t needed. Our Chimney Repair team has documented thousands of inspections with photos and plain-English verdicts - no engineer-speak, no scare tactics. In a city where a single chimney stack often serves two or three condo units, that clarity matters more than anywhere else.
Our Boston office coordinates dispatch to Somerville, so we’re rarely more than 20 minutes from a call. Most jobs finish in one visit. Our technicians are background-checked, uniformed, and trained to work on the specific challenges of Somerville’s housing stock: shared flues, abandoned oil-conversion vents, and brick that has seen a century of New England winters.
Every repair is backed by our 90-Day Done Right Promise - in writing, no arguing. If it’s not right, we make it right. Russell Haines has stood behind that guarantee since 1984, and we plan to be answering the phone in Somerville for decades to come.
Our Chimney Repair Services in Somerville
Mortar Repointing
The lime mortar in Somerville’s pre-1920 brick chimneys was never meant to survive 40 years of freeze-thaw cycling, let alone 100. When joints erode, water seeps behind the face brick, freezes, and pops the surface off in sheets - that’s spalling, and it spreads fast. Repointing in Somerville runs $850-$1,800 for a typical triple-decker stack, depending on how many courses need grinding out and how accessible the scaffold setup is on a tight lot near Union Square or Teele Square. We match the mortar mix to the original - Portland-heavy mixes trap moisture in old brick and cause more damage than they fix. Done right, repointing buys you 25-30 years.

Spalling Brick Repair
Spalling is everywhere in Somerville. The combination of porous old brick, failed mortar joints, and salt runoff from decades of roof melt creates a surface that flakes and crumbles. We see it worst on south-facing stacks that get full sun-thaw cycles all winter. Individual brick replacement runs $45-$85 per brick plus scaffold time; if more than 15-20% of the face is compromised, partial rebuilding is the honest call. We don’t patch over spalling and call it fixed. We show you the camera footage, explain why the brick failed, and quote the repair that actually solves it.

Chimney Waterproofing
Waterproofing a Somerville chimney costs $600-$1,200, but only if the brick and mortar are sound first. Here’s where some contractors cut corners: they seal over spalling brick and eroded joints, trapping moisture inside. In Somerville’s climate, that moisture freezes, expands, and destroys the stack from within - sometimes in a single winter. We won’t apply waterproofing until repointing and brick repair are complete. The product we use is vapor-permeable, so moisture can escape while rain stays out. We warranty the application for 10 years, but only on chimneys we’ve inspected and prepped correctly.

Flashing Repair
Somerville’s triple-deckers and row houses have complicated rooflines - multiple valleys, low slopes, and often three or four layers of roofing material from decades of overlays. Flashing fails where the chimney meets the roof, and on older homes the original flashing is often tarred-over sheet metal that has cracked and lifted. Repair runs $350-$750 for standard replacement; if the chimney needs rebuilding to the roofline, we quote that separately so you’re not surprised. We use copper or lead-coated copper for longevity, never the aluminum stock that some crews slap on to keep the price down.

Chimney Rebuilding
When a Somerville chimney has deteriorated past the point of spot repair - more than 30% spalling, shifted courses, or a compromised liner system in a shared stack - rebuilding is the only honest option. A partial rebuild from the roofline up runs $2,200-$3,800; full rebuilding of a triple-decker stack can reach $6,500-$9,000 depending on height, access, and whether we need to coordinate with multiple condo owners. We document everything with photos, coordinate scheduling with all affected units, and never start demolition until every owner has seen the camera evidence and signed off.

Tuckpointing
Tuckpointing is the cosmetic cousin to repointing - matching new mortar to old for a uniform appearance. In Somerville’s historic districts and on landmark-protected triple-deckers, it’s often required to maintain the streetscape character. We charge $1,200-$2,400 for full-stack tuckpointing on a typical Somerville chimney, including color matching and tool finishing to replicate the original joint profile. It’s labor-intensive work, but on a building where the brick facade is half the property’s character, it’s worth doing once and doing right.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Somerville
We don’t use builder-grade materials on century-old chimneys. For liners and relining, we specify DuraFlex and HeatShield depending on the application - DuraFlex for full stainless replacements, HeatShield for resurfacing sound clay tile that has minor gaps or erosion. For caps, dampers, and exterior hardware, we stock Gelco and Famco products with fast turnaround from our Boston warehouse. Olympia Chimney supplies specialty components for older flue configurations that big-box brands don’t bother with. When a Somerville triple-decker needs a part that isn’t sitting on a shelf, we source it - we don’t substitute and hope you don’t notice.
Common Chimney Repair Problems We See in Somerville Homes
- Shared-stack flue confusion in condo conversions. Somerville’s triple-deckers were condo-converted in waves since the 1990s, and a single brick stack now commonly holds flues serving two or three separately owned units - often with no map of which flue belongs to which unit, and abandoned oil-to-gas conversion flues left unlined and uncapped inside. This is structurally baked into Somerville’s housing type in a way that simply doesn’t apply to single-family suburbs nearby.
- Mid-floor gas inserts vented into occupied furnace flues. On a triple-decker off Highland Ave in Winter Hill, our tech scoped the single brick stack serving all three condo units and found the middle-floor gas insert vented into the same flue the top-floor furnace had been using for years, with no flue liner in either connection. We showed the homeowners the camera footage on the spot, ran a HeatShield liner in the correct flue, and capped the abandoned oil-conversion flue before any repair was quoted.
- Waterproofing applied over failed mortar, trapping moisture. We see this every spring: a Somerville homeowner paid for waterproofing two years ago, and now the brick face is falling off in chunks. The contractor sealed over spalling brick with eroded lime joints. In Somerville’s freeze-thaw winter, the joint erosion accelerates through the next season - the exact opposite of protection.
- Repointing or rebuilding quoted without Level-2 inspection. The real defect - a mid-floor insert venting into the top-floor furnace’s flue - never appears in a visual look from the roof or ground. You can’t fix a liner hazard with mortar. We run the camera first, every time.
Pricing for Chimney Repair in Somerville, MA
Here’s what chimney repair costs in Somerville’s market, based on jobs we’ve completed in the past 18 months:
| Service | Typical Range in Somerville |
|---|---|
| Mortar repointing (standard triple-decker stack) | $850 - $1,800 |
| Individual brick replacement (per brick, with scaffold) | $45 - $85 |
| Partial chimney rebuild (roofline up) | $2,200 - $3,800 |
| Full chimney rebuild (shared triple-decker stack) | $6,500 - $9,000 |
| Chimney waterproofing (after repair/prep) | $600 - $1,200 |
| Flashing repair/replacement | $350 - $750 |
| Tuckpointing (full stack, historic match) | $1,200 - $2,400 |
| Level-2 camera inspection with photo report | $289 - $349 |
Three factors move these numbers: access (tight Somerville lots with no driveway cost more for scaffold setup), height (triple-decker stacks run 35-45 feet), and coordination (shared stacks with multiple condo owners require scheduling that single-family jobs don’t). We quote upfront - the number on the estimate is the number on the invoice. No surprises. Estimates are free, and nothing is recommended without camera evidence you can see for yourself. Call (857) 597-5950.
We Also Serve Cities Near Somerville
Our crews work throughout the metro area, and we regularly coordinate repairs for property managers and condo associations with buildings in multiple municipalities. We also provide Chimney Repair in Somerville and surrounding communities including Boston, Everett, Chelsea, and Revere. If you manage properties across city lines, we can schedule coordinated inspections to keep your compliance documentation consistent.
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
Yes. We map flue assignments with a Level-2 camera inspection, smoke testing, and by tracing appliance connections. On a recent job near Davis Square, three unit owners had been paying separate sweeps for three years, all working on the same flue while two others sat unused and uncapped. We documented the correct mapping, shared it with all owners, and capped the abandoned oil-conversion flue. Call (857) 597-5950 to schedule - estimates are free.
In most Somerville condo associations, the chimney stack is a common element, but individual flue liners and appliance connections are the unit owner’s responsibility. We provide camera documentation that separates stack issues (typically association-funded) from flue-specific problems (typically unit-owner). This clarity prevents the endless finger-pointing we’ve seen in buildings near Union Square and Winter Hill. We bill according to the work performed on each portion, and we explain it plainly so your association and your neighbor both understand.
Crumbling mortar is never cosmetic. In Somerville’s climate, eroded joints let water behind the brick face; freeze-thaw cycling pops the surface off in sheets, and once spalling starts, the repair cost multiplies. Repointing at $850-$1,800 now beats rebuilding at $6,500+ later. We show you the joint depth and water intrusion on camera so you can see exactly where you stand. Call (857) 597-5950 for an exact quote - estimates are free.
No. Gas appliances, furnaces, and water heaters vent through your chimney year-round, and in Somerville’s shared-stack buildings, your neighbor’s usage affects your flue. Carbon monoxide doesn’t care whether you lit a fire. The National Fire Protection Association recommends annual inspection for all chimneys, and in Somerville’s triple-deckers with complex flue histories, that recommendation is closer to a requirement. We offer an $89 Seasonal Tune-Up that includes full camera inspection.
Yes. Two appliances sharing an unlined flue is a carbon monoxide hazard and a code violation. Combustion gases from one appliance can backdraft into the other unit, and the combined output often exceeds the flue’s capacity, especially in Somerville’s older clay-tile liners that have cracked or shifted. We see this configuration regularly in condo-converted triple-deckers. The fix is typically separating the flues with proper liners - HeatShield or DuraFlex depending on condition - and capping any abandoned connections. We show you the camera footage, explain the options, and quote only what solves the hazard. Call (857) 597-5950.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Somerville and local communities since 1984.





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