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 Sweep Across Lexington
A chimney sweep in Lexington, MA typically costs $185 to $345 for a standard wood-burning fireplace, and most sweeps in town take 60 to 90 minutes once the technician arrives. We know the houses here: the 1950s Capes off Waltham Street, the pre-Revolutionary colonials near the Battle Green, the split-levels on the east side of Route 128. Our crews have worked on all of them.
Lexington homeowners call us because the chimney is one part of the house most people never see inside of until something goes wrong. That’s why we show you what we find, with photos, before recommending any work. Call (336) 863-3889 and a live person answers, any hour. You’ll get a written price before anything starts, and you’ll know exactly who’s coming to your door before they arrive.
Why Alcott Chimney Sweep Is Lexington’s Preferred Chimney Sweep Company
Ruben Castellano founded Alcott Chimney Sweep in 2002 with a simple rule: treat every homeowner like they deserve straight answers, not sales pressure. That’s held up in Lexington. When we tell a homeowner on Meriam Street or Turning Mill Road that a flue needs relining, we show them the camera footage first. If the liner is fine, we say so. No upsell, no invented urgency.
The second reason Lexington homeowners keep calling us is the technician vetting. Every Alcott tech passes a background check and identity verification under the Threshold Standard before they ever set foot in your driveway. You’re sent the technician’s name and photo before the visit, and they show a photo ID badge at the door. For parents home with young kids, for older homeowners, for anyone who doesn’t love the idea of a stranger walking through the door, that’s not a nice-to-have. That’s the reason they choose us.
We coordinate dispatch and scheduling from our Boston office, and crews serve Lexington directly. Written guarantee on every repair, included at no extra charge. If a repair fails within the coverage period, the second visit is free. That’s the 365-Day Done Right Promise, and it applies to every job we do in Lexington.
Chimney Sweep Certified in Lexington
Chimney Sweep Certified in Lexington means clearing creosote, the tar-like residue that builds up along the flue walls and causes chimney fires, from wood-burning fireplaces before it reaches a dangerous stage. A standard sweep for a Lexington wood-burning fireplace runs $185 to $345, depending on the height of the chimney, the amount of buildup, and whether it’s a first cleaning or a regularly maintained system.
Annual Sweep for Wood-Burning Fireplaces
If you burn more than a cord of wood each winter in Lexington, schedule a sweep every fall before the burning season starts. The National Fire Protection Association recommends a cleaning at 1/8 inch of creosote buildup, and most homeowners in Lexington reach that threshold in one to two seasons of regular use.
Creosote Removal from Neglected Flues
When creosote hardens into the third-degree stage, a basic brush sweep won’t cut it. We use professional rotary tools and chemical treatments, and the cost ranges from $285 to $425 for heavy Lexington buildup. We’ll show you the before-and-after photos so you see exactly what was removed.
Gas Fireplace Cleaning in Lexington
Gas Fireplace Cleaning in Lexington involves disassembling the glass front, cleaning the burner tube and ports, vacuuming carbon off the log set, and checking the valve and pilot assembly for safe operation. Most Lexington homeowners should schedule this every two years, or annually if you use the fireplace as a primary heat source. Expect to pay $150 to $250 for a standard gas fireplace cleaning.
Carbon Monoxide and Gas Appliance Checks
Gas fireplaces are safe when they work correctly, but a clogged burner or failing thermocouple can produce carbon monoxide without any visible sign. Inside a sealed-up Lexington home in February, that’s a real hazard. Our cleaning includes a combustion check and CO reading at the end of every job.
Gas Inserts in Older Lexington Chimneys
When Lexington homeowners convert a wood-burning fireplace to a gas insert, the original flue often isn’t sized or rated for the new appliance. We inspect the entire vent path, confirm the liner is UL-listed for gas use, and clean out any old creosote residue before the insert is installed or fired up. Figure on $175 to $300 when the cleaning includes relining inspection.
Trusted Brands We Service in Lexington
We carry and install the brands chimney professionals specify, not the box-store equivalents. That includes DuraFlex stainless relining systems, Olympia Chimney caps and dampers, and HeatShield resurfacing materials. We keep common Lexington parts stocked on our trucks, so a cracked chimney cap on a Fifer Road colonial or a failed damper in a Turning Mill split-level gets replaced fast, often in the same visit.
Common Chimney Sweep Problems We See in Lexington Homes
- Third-degree creosote in mid-century fireplaces. The 1950s and 1960s homes built between Route 2A and the Fitchburg line often burn decades of fires before anyone looks inside the flue. When we open these up, it’s not rare to find the glazed, rock-hard creosote that requires rotary removal, not just brushing.
- Cracked clay tile liners from freeze-thaw cycling. Lexington sits roughly 11 miles inland, far enough from the coast to get dozens of 32-degree crossings every winter. Water seeps into clay tile, freezes, expands, and cracks the liner. Spring inspections consistently turn up liner fractures in postwar Capes and colonials.
- Missing or rusted chimney caps on homes with tall pines. Much of Lexington’s residential canopy is mature oak and pine. A missing cap invites rain, snow, and pine needles into the flue, and the acidic residue accelerates mortar deterioration inside.
- Shared flues causing backdraft after furnace replacements. Many Lexington tract homes from the 1950s and 1960s were built with one masonry flue serving both an oil furnace and a fireplace. When today’s owners swap in a high-efficiency sealed furnace or a gas insert, the old venting math no longer holds, and exhaust can spill into the living space.
Pricing for Chimney Sweep in Lexington, MA
We Also Serve Cities Near Lexington
Our crews cover Lexington and the surrounding towns on a regular schedule. If you’re in Woburn, Winchester, Burlington, or Arlington, the same Chimney Sweep team serves your address with the same written pricing and identity-verified technicians. See our Chimney Sweep in Lexington page for full details on coverage in this area.
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 About Chimney Sweep in Lexington
Why does my Lexington chimney need inspection more often than in coastal towns?
Lexington’s inland position creates more freeze-thaw damage than coastal towns like Winthrop or Nahant. Temperatures here cross the freezing line dozens of times each winter, and every cycle forces water deeper into mortar joints and clay tile liners before it freezes and expands. That’s why we recommend spring inspections for any Lexington chimney over 25 years old. If you’ve never had a camera inspection done, call (336) 863-3889 and we’ll walk you through what’s involved.
Can I use regular mortar to repoint my historic Lexington chimney?
If your home sits within Lexington’s Local Historic District near the Battle Green, no. The Historic Districts Commission requires lime-based mortars for visible exterior work on pre-Revolutionary and Federal-era masonry. Portland cement is too hard and too brittle for soft colonial brick, and it traps moisture inside the wall, which spalls the brick face and causes the exact damage it was meant to stop. We specify historically compatible lime mortar on every Lexington historic-district job. Call for a site evaluation and written quote.
My 1960s Lexington home has one flue for the furnace and fireplace. Is that safe?
It was adequate in 1962, but it is frequently unsafe with modern appliances. High-efficiency furnaces and gas inserts change the draft dynamics inside that single masonry flue, and we see backdrafting and creosote conflicts every season in Lexington’s mid-century neighborhoods. The fix is usually a properly sized stainless liner for the furnace flue and a sealed top plate on the unused fireplace flue. If you’re not sure what your house has, call (336) 863-3889 and we’ll inspect it.
What’s the difference between first-degree and third-degree creosote?
First-degree creosote is light soot, mostly carbon, that brushes off easily. Third-degree creosote is a hard, glossy, tar-like glaze bonded to the flue wall. It ignites at a lower temperature, burns hotter, and is the kind of buildup behind most chimney fires. Lexington homes with decades of wood burning often have third-degree creosote deep in the flue. Rotary removal is the only reliable method, and we’ll show you the camera footage before and after. Call for an exact quote.
Do you service gas fireplaces in Lexington?
Yes. We clean gas fireplaces throughout Lexington, including the gas inserts and log sets common in homes from Five Fields to Peacock Farm. The cleaning includes burner and pilot inspection, glass removal and cleaning, and a carbon monoxide check. Expect $150 to $250. If your gas fireplace hasn’t been serviced in years, or if you smell anything odd when it runs, call (336) 863-3889 today.
Written by Ruben Castellano, Owner at Alcott Chimney Sweep, serving Lexington since the company’s founding in 2002.