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 Liner & Rebuild Across Cambridge
A chimney liner replacement or partial rebuild in Cambridge typically runs $1,800-$4,500 depending on flue count and access, with most jobs completed in a single visit after a Level 2 camera inspection. Our crews serve Cambridge daily from our Boston office, and we understand the unique challenges of the city’s triple-decker housing stock, shared flue chases, and century-old masonry. If your chimney is venting multiple appliances, showing water damage, or was last inspected before the last fuel conversion, call (857) 392-4709. We’ll send a technician with a camera, not a guess.
Why Hearthstone Chimney Co. Is Cambridge’s Preferred Chimney Liner & Rebuild Company
We’ve been answering the phone with a live person for over 42 years. No voicemail, no callback queue, no app. When a Cambridge homeowner calls (857) 392-4709 at 10 PM on a Saturday because they smelled something wrong from the flue, a human being answers.
Our reputation in Cambridge is built on documentation. Every inspection ends with photos you can see and a plain-English verdict. No surprises on the bill. The number on the estimate is the number on the invoice. Our 90-Day Done Right Promise is in writing, no arguing - if it’s not right, we come back. That’s the Keystone Standard: Krafted right, Every time, Your home first, Standing behind it.
Background-checked, uniformed technicians complete most liner replacements and partial rebuilds in a single visit. We know Cambridge’s streets, its parking realities, and the specific headaches of working on pre-1920 masonry in tight urban lots. Dispatch and scheduling are coordinated from our Boston office, but the crew that shows up at your door knows Cambridge chimneys.
Our Chimney Liner & Rebuild Services in Cambridge
Stainless Steel Liner Installation
We install DuraFlex and Olympia Chimney stainless steel liners for wood-burning, gas, and oil appliances throughout Cambridge. These are professional-grade, not builder-grade substitutes. In North Cambridge triple-deckers with original coal-era flues now venting high-efficiency gas equipment, a properly sized stainless liner is often the only way to meet modern draft requirements without a full teardown. We measure twice, fabricate once, and stand behind the installation with our written guarantee.
Flexible Liner Systems
Flexible liners are essential in Cambridge’s older housing where straight flue runs are rare and chimney offsets from decades of modifications are common. A HeatShield or DuraFlex flexible liner navigates bends that rigid pipe cannot, making it possible to reline a flue in a Cambridgeport row house without dismantling interior walls. Our crew sizes the liner to the appliance, not the other way around. Wrong size, wrong draft, wrong outcome. We don’t do wrong.
Liner Replacement
Most liner replacements we perform in Cambridge involve removing failed clay tile, damaged flex liner from a previous conversion, or bare brick flues that were never properly lined at all. In East Cambridge and Cambridgeport triple-deckers, it’s routine to open a cleanout and find three or four flues in one chase - one clay tile, one flex stainless, one bare brick - each relined in a different decade. Our crew must run a Level 2 camera inspection per flue before any liner work to confirm what is actually venting where. It almost never matches the building’s permit history. We document everything. Then we replace what needs replacing, rebuild what needs rebuilding, and test before we leave.
Partial Chimney Rebuild
Cambridge’s 30-40 annual freeze-thaw cycles destroy lime-mortar joints and chimney crowns on pre-1930 stacks. When spalling brick, open joints, or a failed crown have compromised the structure above the roofline, a partial rebuild restores integrity without the cost of full demolition. We use professional-grade refractory mortar and match existing brick where possible. The crown gets rebuilt with proper slope and overhang to shed water. No water, no freeze-thaw damage, no callback.
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 Cambridge
We work exclusively with professional-grade materials from Famco, Copperfield, DuraFlex, and HeatShield. These are the brands specified by chimney professionals who plan to stand behind their work for decades. We stock common liner diameters and fittings locally, so Cambridge jobs aren’t delayed waiting for parts to ship. A square deal means the right material for the flue, installed correctly, with no substitutions you didn’t agree to.
Common Chimney Liner & Rebuild Problems We See in Cambridge Homes
- Cross-contamination between adjacent flues in a shared chase. A neighbor’s gas appliance vents into your flue because a previous reline was done piecemeal without a per-flue camera inspection. We see this regularly in Cambridgeport and East Cambridge triple-deckers where decades of separate landlords hired separate contractors.
- Freeze-thaw cycling destroys lime-mortar joints and chimney crowns. Cambridge’s 30-40 freeze events per winter attack the exposed masonry on pre-1930 stacks, causing spalling and open joints that allow water infiltration between cleanings. Water gets in, freezes, expands, repeats. The crown fails. The liner corrodes. The problem compounds.
- Absentee landlords defer liner work for years. With over 60% of Cambridge housing in rental units, often with institutional owners tied to Harvard and MIT, chimneys go uninspected despite the city’s aggressive rental housing enforcement. First-degree creosote becomes third-degree glaze - a tar that a brush cannot remove - by the time anyone calls.
- Tight urban lot spacing limits solar drying of masonry. After rain and snowmelt, Cambridge’s narrow side yards and attached construction keep chimney stacks shaded and damp, accelerating efflorescence and mortar deterioration between cleanings. A liner installed in wet masonry will fail prematurely.
Pricing for Chimney Liner & Rebuild in Cambridge, MA
| Service | Typical Range in Cambridge |
|---|---|
| Single-flue flexible stainless liner (gas appliance) | $1,800 - $2,800 |
| Single-flue rigid stainless liner (wood-burning) | $2,200 - $3,400 |
| Multi-flue liner replacement (per additional flue) | $900 - $1,500 |
| Partial chimney rebuild (crown + upper courses) | $2,800 - $4,500 |
| Smoke chamber parging + refractory mortar repair | $1,200 - $2,200 |
| Level 2 camera inspection with photo report | $289 - $389 |
What moves the number: flue count, access difficulty, whether the crown needs rebuilding, and whether we find abandoned flues or cross-connections that must be sealed. We agree on a flat price before booking. No surprises on the bill. Call (857) 392-4709 for an exact quote - estimates are free.
On a Cambridgeport triple-decker off Putnam Avenue, we opened the cleanout and found three flues in one chase: a first-floor clay tile liner, a second-floor flex stainless liner from a 2000s conversion, and a third-floor bare brick flue - all sharing the same chase, with the third-floor unit’s gas appliance drafting straight into the second-floor flue. After running a Level 2 camera inspection per flue, we relined the bare brick run with a DuraFlex stainless liner, rebuilt the crumbling refractory mortar in the smoke chamber, and confirmed each unit’s draft with a smoke test before closing up. Done right - and we stand behind it.
We Also Serve Cities Near Cambridge
Our Chimney Liner & Rebuild crews work throughout the metro area, including Cambridge and neighboring Somerville, Belmont, Medford, and Brookline. The same Level 2 camera inspection, the same professional-grade materials, the same written guarantee applies whether we’re on your street or the next town over.
Serving Cambridge, MA - Our Local Coverage Area
We’re based in the Cambridge 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 Liner & Rebuild in Cambridge
No. Each flue is evaluated separately based on what appliance it serves, what condition the liner is in, and whether it’s drafting correctly. We run a Level 2 camera inspection per flue, show you the photos, and recommend only what each flue actually needs. One may need a full stainless liner, another may need only a smoke chamber repair, a third may be abandoned and need proper sealing. Nothing gets done without camera evidence you can see for yourself. Call (857) 392-4709 for an exact quote - estimates are free.
Cambridge’s 30-40 annual freeze-thaw events attack lime-mortar joints and chimney crowns, which means we almost always inspect the crown and upper masonry before installing any liner. A liner in a chimney with a failed crown will corrode prematurely. If the crown is cracked or the brick is spalling, we recommend rebuilding that structure as part of the liner job. The work can sometimes be staged if budget is a concern, but we will tell you plainly what can wait and what cannot. Call (857) 392-4709 for an exact quote - estimates are free.
You don’t, and neither do we, until we run a camera. In Cambridge’s pre-1920 housing, fuel conversions were often done by different contractors at different times with different standards. The permit history is frequently incomplete or inaccurate. Our Level 2 camera inspection maps each flue from appliance to termination, identifies what material is in place, and confirms draft direction. Only then do we recommend liner work. Photos you can see, a plain-English verdict. Call (857) 392-4709 for an exact quote - estimates are free.
Yes. Gas and oil appliances produce corrosive condensate and carbon monoxide, and an unlined or damaged flue can leak these into living spaces or adjacent units. In Cambridge’s multi-family housing, a failed liner in one unit often affects neighbors. The inspection is not about creosote buildup - it’s about whether your flue is intact, properly sized, and venting only where it should. We’ll be there when we say. Call (857) 392-4709 for an exact quote - estimates are free.
A properly installed liner isolates your flue from any others in the shared chase, and a rebuild of damaged masonry or smoke chamber partitions restores the separation that was originally built into the chimney. We identify cross-connections with per-flue camera inspection, seal abandoned openings, and install a continuous liner from appliance to termination so your flue vents only your appliance. The smoke test at completion proves it. In writing, no arguing. Call (857) 392-4709 for an exact quote - estimates are free.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Cambridge and local communities since 1984.