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 Lexington
Chimney repair in Lexington, MA typically costs $180 for minor mortar repointing up to $8,500 for full center-chimney rebuilding, with most homeowners paying between $1,200 and $3,800 for mid-range repairs. Our crews are dispatched from our Boston office and serve Lexington properties with same-week scheduling available. Call (508) 850-0489 for a written estimate before any work begins.
We’ve worked on chimneys across Lexington since 2009 - from the 18th-century center-chimney colonials along Massachusetts Avenue near the Battle Green to the postwar ranches and split-levels that fill the neighborhoods around Waltham Street and Marrett Road. The town’s two completely different housing eras mean two completely different repair playbooks, and mistaking one for the other is how carbon monoxide paths get missed and clay tile failures get patched over instead of properly relined.
Why Level Two Chimney Framingham Is Lexington’s Preferred Chimney Repair Company
Lexington homeowners don’t hire us because we’ve inspected over 38,000 chimneys. They hire us because we show them what we found. Every Chimney Repair job in Lexington starts with an NFPA 211 Level 2 camera inspection - Clause 4 of the Haven Standard - and ends with a documented photo record, a written price, and a written warranty. No exceptions.
Our technicians are background-checked, uniformed, and licensed; you’ll get a text when yours is on the way. Calls to (508) 850-0489 are answered by a live person, 24/7, not a voicemail tree. The 365-Day Done Right Promise covers every repair: if it’s not done right, we make it right.
We know Lexington’s specific failure patterns. The inland freeze-thaw cycle here hits harder than coastal towns - overnight lows drop further, and the temperature swings erode mortar joints and spall clay tile faster than in Winchester or Cambridge. We’ve rebuilt crowns on center-chimney stacks that had been “repaired” three times by companies who never scoped the secondary flues. We don’t do guesswork.
Our Chimney Repair Services in Lexington
Chimney Rebuilding
Full chimney rebuilding in Lexington runs $4,500-$8,500 for center-chimney colonials and $3,200-$6,800 for standard exterior stacks. The Battle Green area’s multi-flue masonry masses are structural elements tied into timber framing in ways 1950s builders never attempted - rebuilding one requires understanding which flues are active, which were sealed by past owners, and how the original rubble-and-brick core was laid. We scope every passage before we quote. Materials come through our Haven buying network from Olympia Chimney and Copperfield, procured to keep customer prices honest.
Mortar Repointing
Repointing degraded mortar joints in Lexington costs $800-$2,400 depending on access and the extent of erosion. The town’s inland position - roughly 11 miles from Boston with no ocean moderation - means more severe freeze-thaw cycling than coastal communities. Water enters hairline cracks, expands overnight, and opens joints wider each season. On mid-century ranches near Waltham Street, we’ve found crown mortar completely receded to finger-depth in under eight years. We grind to sound substrate, match original mortar composition, and seal with a breathable waterproofing agent.
Chimney Waterproofing
Professional waterproofing for Lexington chimneys runs $650-$1,800 and includes crown sealing, masonry treatment with vapor-permeable sealant, and flashing inspection. This is preventive repair, not cosmetic. We apply it most often to the postwar brick stacks in the Marrett Road area where spalling has started but full rebuild isn’t yet necessary. The sealant we use, sourced through Famco, lets masonry breathe while blocking liquid water - critical in Lexington’s climate where freeze-thaw can turn absorbed moisture into structural damage over a single winter.
Spalling Brick Repair
Brick spalling repair in Lexington ranges from $450 for localized replacement to $2,800 for extensive face rebuilding. The condition is everywhere in Lexington’s 1950s-1970s housing stock: clay tile liners crack, moisture penetrates to the surrounding brick, and freeze-thaw cycling pops faces off the wythe. We see it most on south- and west-facing exposures where daily temperature swings are widest. Repair includes removing damaged units, installing matching brick, and addressing the underlying moisture source - usually liner failure or crown leaks we document on camera.
Flashing Repair
Flashing repair in Lexington costs $350-$950 for standard chimney-to-roof junctions, with complex cricket configurations on wider stacks running higher. Lexington’s mature tree canopy drops debris that holds moisture against step flashing, and the town’s older neighborhoods have seen multiple roofing layers that bury original flashing in incompatible sealant. We remove everything to clean substrate, install new copper or galvanized step and counter flashing, and integrate with your roofing underlayment.
Tuckpointing
Tuckpointing - the cosmetic refinement of repointed joints to match original thin-line mortar profiles - adds $200-$500 to repointing costs on Lexington’s historic properties. The center-chimney colonials near the Battle Green often have original ribbon pointing that modern thick-joint repair destroys aesthetically. We match color, texture, and joint profile to preserve the character that makes these homes distinctive.
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 Lexington
We source repair materials through the Haven buying network from DuraFlex, HeatShield, Olympia Chimney, and Famco - not generic equivalents. For Lexington homeowners, this means factory-warrantied liner components, crown repair compounds rated for New England freeze-thaw, and stainless steel caps that outlast the big-box versions by a decade. We stock common sizes for mid-century clay tile replacement, so most Lexington repairs don’t wait on shipping. When we specify HeatShield for a cracked flue or DuraFlex for a full relining, it’s because that material fits that failure mode - not because it’s what we have on the truck.
Common Chimney Repair Problems We See in Lexington Homes
- Heavy creosote glazing in wood-stove flues. Lexington properties using wood stoves as primary heat load first-degree flake creosote that homeowners ignore; it bakes to second- and third-degree glazed deposits a brush alone cannot remove. We rotary-clean with mechanical heads and specify the correct sweeping interval - usually every 1-2 cords burned, not annually.
- Spalling clay tile in 1960s ranch and split-level flues. Original clay tile liners in Lexington’s postwar housing are 60-70 years old and shedding from decades of inland freeze-thaw cycling. The damage starts as hairline cracks, progresses to spalled fragments in the smoke chamber, and ends with liner collapse that requires full relining.
- Missed secondary flues in center-chimney colonials. The offset multi-flue stacks along Massachusetts Avenue near the Battle Green contain sealed kitchen hearth flues that past owners blocked informally. A technician who scopes only the active flue misses a deteriorating secondary passage that can bleed carbon monoxide into wall cavities or adjacent rooms.
- Crown mortar erosion from freeze-thaw cycling. Lexington’s colder overnight lows and sharper temperature swings than coastal towns accelerate joint failure at chimney crowns. Once the crown cracks, water enters the stack, accelerates liner damage, and turns a $650 waterproofing job into a $4,500 rebuild in three to five years.
Pricing for Chimney Repair in Lexington, MA
| Service | Typical Range in Lexington |
|---|---|
| Minor mortar repointing (localized) | $180 - $650 |
| Flashing repair | $350 - $950 |
| Crown repair / rebuild | $850 - $2,200 |
| Spalling brick repair (localized) | $450 - $2,800 |
| Full chimney waterproofing | $650 - $1,800 |
| Mortar repointing (full stack) | $800 - $2,400 |
| Clay tile relining (HeatShield or DuraFlex) | $2,400 - $4,200 |
| Partial chimney rebuild | $3,200 - $6,800 |
| Full center-chimney rebuild | $4,500 - $8,500 |
These ranges reflect Lexington’s market specifically. Center-chimney colonials near the Battle Green run higher due to access complexity and the need to scope multiple offset flues. Postwar ranches with straightforward exterior stacks fall at the lower end. Every quote is written, itemized, and delivered before work starts - Haven Standard Clause 1. No “call for pricing,” no surprises after the technician arrives. Call (508) 850-0489 for your exact estimate; estimates are free.
We Also Serve Cities Near Lexington
Our Chimney Repair in Lexington crews also work in Winchester, Burlington, Waltham, and Cambridge - though each town’s housing stock and climate exposure produces different failure patterns. Winchester’s coastal moderation means less freeze-thaw damage. Cambridge’s dense urban fabric creates access challenges we don’t see in Lexington’s suburban lots. We adjust our repair approach accordingly, but the process stays the same: camera inspection, written price, documented record, done right promise.
Serving Lexington, MA - Our Local Coverage Area
We’re based in the Lexington 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 Lexington
Every 1-2 cords of wood burned, which for most Lexington wood-stove households means twice per heating season minimum. Third-degree glazed creosote - common when homeowners stretch to annual sweeping - requires mechanical rotary cleaning and cannot be removed with a standard brush. Call (508) 850-0489 to schedule; we’ll inspect the flue and tell you exactly what deposit class you’re dealing with.
These stacks contain two to four offset flues in a single masonry mass, including defunct kitchen hearth flues that past owners sealed or informally blocked. A technician unfamiliar with colonial construction can easily scope the wrong passage or miss a deteriorating secondary flue that poses a real carbon monoxide risk. We camera-scope each offset passage separately and document every flue condition in your written report. On a center-chimney colonial off Massachusetts Avenue near the Battle Green, we found the homeowner running a wood stove as primary heat on the main flue while a sealed-over kitchen hearth flue behind it had a fractured clay tile spalling into the smoke chamber. We camera-scoped each offset passage separately, HeatShield-liner’d the active flue, and permanently capped the orphaned one so it couldn’t feed CO back into the living space.
White efflorescence on exterior brick, small tile fragments in the firebox, and any smoke smell in the house when the fireplace isn’t in use. Lexington’s inland freeze-thaw cycle hits original clay tile harder than coastal towns; at 60-70 years old, most are cracked or spalling. We include liner condition in every Level 2 inspection and will show you the camera footage before recommending relining. Call (508) 850-0489 for an inspection; estimates are free.
No. Wood stoves burning as primary heat produce glazed second- and third-degree creosote that bonds to flue tile. A standard brush passes over it. We use mechanical rotary cleaning heads and, for severe glazing, chemical pretreatment. We’ll show you the deposit class on camera and explain exactly what removal method your flue needs before quoting.
No. Travel to Lexington is included in our standard service area. Scheduling is coordinated from our Boston office, and crews serve Lexington properties with same-week availability. The written price you receive before work starts includes all labor, materials, and travel - no add-ons after arrival. Call (508) 850-0489 to book your inspection.
Ready to see what your chimney actually needs? Call (508) 850-0489 for a free, written estimate. Every inspection includes NFPA 211 Level 2 camera documentation, a written price before any work begins, and the 365-Day Done Right Promise. We’ll show you what we found, explain what it means, and let you decide what to fix and when.
Written by Corrine Halstead, Owner at Level Two Chimney Co., serving Lexington and the Boston metro area under the Haven Standard since 2009.