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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Before
AfterFast, Reliable Chimney Repair Across Cambridge
Chimney repair in Cambridge, MA typically costs between $450 and $3,800 depending on scope, with mortar repointing and spalling brick repair making up the majority of calls we receive in the city. Most Cambridge homeowners and landlords book a Level 2 camera inspection first, which runs $289-$349 and includes a written price before any repair work begins. Our dispatch team coordinates from the Boston office, and crews are routinely in Cambridge neighborhoods like Cambridgeport, East Cambridge, and Porter Square throughout the week.
We’ve been inspecting and repairing chimneys in Cambridge since 2009, and the city’s housing stock keeps us busy year-round. The triple-deckers and converted multifamily brick buildings that dominate Cambridge’s residential landscape present repair challenges you simply don’t find in surrounding suburbs. When a single masonry chimney stack serves two or three separate apartments, fixing one flue without understanding the full stack risks cross-contamination, code violations, and serious safety hazards. That’s why our Chimney Repair team treats every Cambridge call as a potential multi-unit inspection, not a single-flue patch job.
Call (508) 850-0489 to schedule. We answer live, 24 hours a day.
Why Level Two Chimney Framingham Is Cambridge’s Preferred Chimney Repair Company
We’ve completed more than 38,000 chimney inspections and cleanings since 2009, and a significant share of those have been in Cambridge’s dense, pre-WWII housing stock. Cambridge landlords and homeowners know us for one reason: we document everything. Every job gets a camera-scan inspection, a written price before work starts, and a photo record on completion. Clause 4 of the Haven Standard requires that photo record, and we’ve operated that way since day one.
Our Cambridge customers specifically mention the written price guarantee in reviews. No “call for a quote.” No surprises after the tech is already on your roof. The price we put in writing is the price you pay. Haven Standard Clause 1, H.A.V.E.N. “Have it in writing.”
Response time to Cambridge is typically same-week during peak season, and our background-checked, uniformed technicians carry license information on every page of documentation they leave with you. You’ll get a text when your tech is en route, and you’ll know their name before they arrive. That’s H.A.V.E.N. “Arrive on schedule” and “Verified crews.”
We also offer a Free Second Opinion on any competitor’s written estimate. Bring us another company’s quote, and we’ll review it against what our camera found in your flue. No charge.
Our Chimney Repair Services in Cambridge
Mortar Repointing
Cambridge’s freeze-thaw cycles destroy lime mortar joints faster than almost any other weather pattern in Massachusetts. Temperatures cross 32°F dozens of times each winter, and water that seeps into hairline cracks expands and contracts until the mortar turns to powder. In a typical Cambridge triple-decker on a street like Broadway or Hampshire, we find mortar joints eroded to depths of an inch or more. Our repointing removes the failed material and installs new mortar matched to the original composition, with a written scope and warranty before we start. Most Cambridge repointing jobs run $1,200-$2,800 for a standard stack.
Spalling Brick Repair
Spalling - when the face of a brick flakes off due to moisture penetration - is epidemic on Cambridge chimneys exposed to decades of freeze-thaw cycling without proper caps or waterproofing. We see severe spalling on rooflines in Inman Square and along Massachusetts Avenue where chimneys lack cricket diverters and catch runoff directly. Spalling isn’t cosmetic. Once the brick face is gone, the interior structure absorbs water faster, and the freeze-thaw cycle accelerates. We remove spalled units, install matching replacement brick where possible, and treat the stack with vapor-permeable waterproofing to break the cycle. Typical spalling repair in Cambridge: $850-$2,400.
Chimney Waterproofing
Cambridge’s harsh winters and driving nor’easters punish unprotected masonry. Standard exterior paint traps moisture inside the brick and actually makes spalling worse. We apply vapor-permeable treatments from our Haven buying network that let the chimney breathe while shedding water. For Cambridge’s flat-roof triple-deckers with parapet walls, waterproofing is often the difference between a chimney that lasts another decade and one that needs full rebuilding. Waterproofing typically runs $650-$1,400 depending on stack height and access.
Flashing Repair
Flashing leaks in Cambridge often go misdiagnosed as roof problems. On the low-slope and shed roofs common in Cambridgeport and Area 4, step flashing corrodes or separates from the masonry, letting water run directly into the chase and saturate the framing. Our flashing repair includes removing the damaged metal, inspecting the underlying structure for rot, and installing new copper or galvanized flashing with a proper counterflashing reglet cut into the mortar joint. Cambridge flashing repair: $550-$1,800.
Chimney Rebuilding
When freeze-thaw damage, neglected maintenance, or structural settling has compromised too much of the stack, partial or full rebuilding becomes the only safe option. In Cambridge, we often rebuild the top few courses of triple-decker stacks where the most exposed brick and mortar have failed, while the lower sections remain sound. Every rebuild starts with a Level 2 camera inspection of all flues in the stack, because rebuilding without inspecting the shared chase is exactly how cross-contamination happens. Cambridge rebuilds range from $2,800 for a partial rebuild to $7,500+ for a full stack replacement on a multi-flue system.
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.
Before
AfterTrusted Brands We Service in Cambridge
We source materials through our Haven buying network specifically to keep customer prices honest. For Cambridge repairs, we regularly install Gelco chimney caps and Famco termination fittings, and we carry Olympia Chimney liner sections for relining jobs that follow repair work. Having these materials on hand means faster turnaround for Cambridge customers - we’re not waiting on a distributor while your open flue takes on water. Every part is documented in your written scope and backed by the manufacturer’s warranty plus our 365-Day Done Right Promise.
Common Chimney Repair Problems We See in Cambridge Homes
- Shared stack cross-contamination. In Cambridge’s triple-deckers, a single masonry chase often carries two or three active flues. When we repair one unit’s flue without inspecting the full stack, a neighbor’s appliance or abandoned flue can backdraft into the repaired flue. We inspect every flue in the chase as a system, document each one, and flag cross-connections before they become a hazard.
- Hidden collapsed liner behind bricked-up fireboxes. In Cambridgeport and East Cambridge, we regularly find tenants have installed wood-burning inserts into “dead” flues that were bricked up during mid-century fuel conversions. The insert looks fine. The liner behind it is cracked or collapsed. We pull the insert, camera the flue, and show the landlord exactly what was hidden.
- Freeze-thaw destruction of lime mortar and clay tile. Cambridge’s temperatures cross freezing dozens of times each winter. Water penetrates the smallest mortar joint defect, expands, and opens the crack wider. By spring, what was a hairline gap is a half-inch channel letting water into the chase. Patching only the visible crack leaves the rest of the flue crumbling.
- Abandoned flues accumulating debris and creosote. Many Cambridge chimneys were partially decommissioned as units converted from coal or oil, but the abandoned flues remain connected to the stack. They collect debris, harbor birds, and can develop hidden creosote deposits that present fire hazards even in “inactive” flues.
Pricing for Chimney Repair in Cambridge, MA
| Service | Typical Range in Cambridge |
|---|---|
| Level 2 Camera Inspection | $289-$349 |
| Flashing Repair | $550-$1,800 |
| Chimney Waterproofing | $650-$1,400 |
| Spalling Brick Repair | $850-$2,400 |
| Mortar Repointing | $1,200-$2,800 |
| Partial Chimney Rebuild | $2,800-$4,500 |
| Full Stack Rebuild (multi-flue) | $5,500-$7,500+ |
What moves a Cambridge job toward the higher end: shared stacks requiring multi-flue inspection and documentation, roof access challenges on tight streets with limited parking, matching century-old brick that requires specialty sourcing, and the extent of freeze-thaw damage hidden below the roofline. Every Cambridge repair starts with a Level 2 inspection and written price before work begins - no exceptions. Estimates are free. Call (508) 850-0489.
We Also Serve Cities Near Cambridge
Our crews work throughout the metro Boston area. We regularly handle Chimney Repair in Cambridge and surrounding communities including Boston, Newton, Everett, and Winchester. Each city’s housing stock presents different challenges - Boston’s high-rises, Newton’s mid-century splits, Everett’s dense multifamily - and we adjust our inspection and repair approach accordingly. Dispatch is coordinated from our Boston office.
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 Repair in Cambridge
Yes. Cambridge fire code requires annual inspection documentation for every active flue, and we inspect every flue in a shared stack as a single system. Our tech will camera each flue, document the condition of the shared masonry chase, and provide separate written records for each unit’s active flue. Landlords use these for compliance; tenants use them for safety verification. Call (508) 850-0489 to schedule multi-unit documentation.
No, not without a full Level 2 inspection first. In Cambridgeport and East Cambridge, we regularly find that “bricked-up” fireboxes still have clay flue liners in place, and those liners have often cracked or collapsed after decades of disuse. A tenant-installed insert venting into a damaged liner is a carbon monoxide and chimney fire hazard. We pull the insert, camera the flue, and show you exactly what condition it’s in before any repair or reuse is discussed. Free estimates: (508) 850-0489.
Cambridge’s freeze-thaw cycles - temperatures crossing 32°F dozens of times each winter - aggressively deteriorate lime mortar joints and clay tile liner sections in the city’s century-old chimney stacks. Water enters microscopic cracks, expands when frozen, and widens the defect. By spring, mortar that looked sound in October has turned to powder. This means Cambridge repairs often reveal more extensive damage than surface inspection suggests, which is why our written price includes full chase evaluation, not just the visible course. Call (508) 850-0489 for a camera inspection that shows the full picture.
We find Class II and Class III glazed creosote in Cambridge’s older, often-neglected flues - particularly in abandoned or “dead” flues where tenants have installed inserts without proper sweeping. Class III creosote is a hardened, tar-like deposit that can’t be removed with standard brushing and requires chemical treatment or rotary removal. It also indicates that the flue has been operating at temperatures too low for complete combustion, which accelerates liner deterioration and increases fire risk. Repairing masonry without addressing Class III creosote buildup leaves the flue hazardous even with new brick and mortar. We document creosote class in every inspection report. Call (508) 850-0489.
You don’t, unless the shared chase has been inspected as a system with a camera. In Cambridge triple-deckers, we’ve found cross-connections where a neighbor’s water heater or furnace vents into a flue that also serves another unit’s fireplace, or where a damaged liner allows gases to migrate between flues in the same chase. Our Level 2 inspection includes smoke testing and camera evaluation of every flue in the stack to identify cross-connections, liner breaches, and chase integrity issues. We document each flue separately so you have evidence of what’s yours and what’s not. Call (508) 850-0489 for shared-stack documentation.
Ready to get your Cambridge chimney inspected, documented, and repaired the right way? Call (508) 850-0489 now. We answer live, 24 hours a day, and every job starts with a written price before any work begins. Free estimates, Free Second Opinions on competitor quotes, and the 365-Day Done Right Promise on every repair.
Written by Corrine Halstead, Owner at Level Two Chimney Co., serving Cambridge and the greater Boston area since 2009.