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.
DuraFlex Chimney Cleaning in Lexington, MA | Level Two Chimney Waltham
DuraFlex chimney cleaning in Lexington, MA typically runs $180-$340 for a standard sweep with Level 2 camera inspection, and most jobs are completed in a single visit. What makes our DuraFlex work here different is the town’s colonial-era chimney stock: oversized central stacks with three or four flues serving multiple hearths, built with lime mortar before clay-tile liner standards existed. We’ve cleaned, relined, and rebuilt hundreds of DuraFlex systems across Middlesex County, including the older masonry around Lexington service area homes near the Battle Green. Call (781) 649-9326 for a written estimate before any work starts.
Why Lexington Residents Choose Us for DuraFlex Service
Corrine Halstead grew up in Queens, learned the trade at Suffolk County Community College on Long Island, and has spent the better part of two decades doing chimney work up and down the Northeast. She and her crew have been servicing Waltham for years, including regulars near Prospect Hill Park who call every fall before the first fire. That background matters for Chimney Cleaning & Sweep in Lexington, where a routine cleaning visit often requires smoke-testing and flue mapping before any brush touches the flue.
We are independent DuraFlex specialists, not a manufacturer-authorized dealer. Our only loyalty is to getting your flue safe and drafting correctly. We stock genuine DuraFlex components for critical connections and terminations, and use quality aftermarket stainless when a full OEM kit is not required. Every job gets a written price before work starts, a documented photo record when it’s done, and the 365-Day Done Right Promise. The camera doesn’t guess. Neither do we.
Common DuraFlex Chimney Cleaning Problems We Solve in Lexington

- Corrosion and pitting at the liner top. Lexington’s inland location strips away Boston’s ocean moderation, driving harder freeze-thaw cycles. Condensation refreezes in the top 12-18 inches of a DuraFlex stainless liner, attacking the alloy. We catch this with the camera during Level 2 inspection; if the pitting exceeds safe wall thickness, we recommend replacement rather than sell you a cleaning that won’t last.
- Kinks and crushed sections in colonial flues. The tight, offset flues in homes near Massachusetts Avenue and the Battle Green often damage DuraFlex liners during original installation. Reduced draft follows, and creosote accumulates at the deformation. Our camera locates the exact section; we replace damaged lengths with proper DuraFlex Tee & Cap Assemblies sized for multi-flue masonry stacks.
- Failed liner-to-appliance connectors in converted ranches. Post-WWII Lexington ranches on the town’s outer edges often had oil flues crudely adapted to wood inserts. DuraFlex Appliance Connector Kits fail at these junctions, causing smoke spillage and CO risk. We inspect the connector with the camera and replace with genuine DuraFlex components or documented aftermarket equivalents.
- Disconnected liner sections in oversized central chimneys. Many Lexington homes closest to the Battle Green have a single large chimney mass venting three or four separate flues. Homeowners often don’t know which flue connects to which fireplace. A DuraFlex liner can sag or disconnect entirely inside these stacks, discovered only after smoke-testing and flue mapping.
- Insulation blanket degradation from moisture intrusion. DuraFlex Insulation Blanket & Mesh Wrap Systems break down when masonry spalling lets water into the chase. Lexington’s severe freeze-thaw cycling accelerates this spalling in lime-mortar chimneys. We assess the wrap condition during cleaning and recommend rebuild or recapping when the masonry itself is the root problem.
Before
AfterDuraFlex Service in Lexington: What Local Conditions Mean for Your Equipment
Lexington’s inland location - about 11 miles from the coast - strips away the ocean’s moderating effect, driving more severe freeze-thaw cycles than Boston or coastal towns and accelerating spalling of lime mortar in the town’s 1700s-era chimneys. That means even a routine DuraFlex liner cleaning often turns into a mortar-joint assessment and potential Lexington Chimney Repair, because the same moisture that cracks the masonry can compromise the liner’s top seal.
A homeowner on Massachusetts Avenue near the Battle Green called us because smoke was backing into the parlor from a fireplace they’d never used before. Our tech smoke-tested the four flues in that single central chimney, mapped which flue served which hearth, and found a DuraFlex liner that had been inserted into the wrong flue years earlier, leaving the parlor fireplace venting into a soot-packed, unlined passage. We pulled the liner, cleaned and reassessed the flue, reinstalled the DuraFlex with a proper top plate and multi-flue cap, and the parlor fireplace drafted correctly for the first time in decades.
This is why we include flue mapping as standard on Lexington’s colonial-era homes. A sweep working in Burlington next door would almost never encounter this. DuraFlex sales & service through our crew means you get someone who knows the difference.
DuraFlex Models & Products We Service in Lexington

We work with the full DuraFlex product line daily:
- DuraFlex Stainless Steel Flexible Chimney Liner Kits - full relines and section replacements
- DuraFlex Insulation Blanket & Mesh Wrap Systems - inspection, repair, and re-wrapping
- DuraFlex Appliance Connector Kits - for wood stoves and inserts in converted Lexington ranches
- DuraFlex Tee & Cap Assemblies - critical for multi-flue masonry stacks near the Battle Green
We stock genuine DuraFlex components for critical connections and terminations locally, which keeps turnaround fast for Lexington jobs. When a full OEM kit isn’t required, we use quality aftermarket stainless and document exactly what was installed. If a liner is kinked or corroded beyond safe drafting, we say so plainly. No cleaning can fix a liner that has lost structural integrity.
DuraFlex Service Pricing in Lexington
Standard DuraFlex chimney cleaning with Level 2 camera inspection: $180-$340. Multi-flue colonial stacks requiring smoke-testing and flue mapping add $75-$150. DuraFlex liner section replacement with genuine components: $400-$800 depending on length and access. Full relines with DuraFlex Stainless Steel Flexible Chimney Liner Kits: $2,800-$4,500 for typical Lexington flues.
Every estimate includes the camera inspection, written scope, and written warranty before work starts - Clause 1 of the Haven Standard. No surprises after the tech is already in your home. Free Second Opinion on any competitor’s written quote. Call (781) 649-9326 for an exact quote; estimates are free.
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 - DuraFlex Chimney Cleaning in Lexington
Yes. Homes near the Battle Green often have a single large chimney mass venting three or four separate flues, and homeowners frequently don’t know which flue serves which fireplace. We smoke-test and map every flue before brush work begins. This diagnostic step is standard for us in Lexington and almost never necessary in newer neighboring towns. Call (781) 649-9326 to schedule; estimates are free.
Lexington’s inland climate drives harder freeze-thaw cycling than coastal towns, causing condensation to repeatedly refreeze in the top 12-18 inches of the liner. This corrodes and pits the stainless alloy over time. We inspect this zone with the camera on every Level 2 visit and measure wall thickness. If pitting exceeds safe limits, we recommend section replacement or full reline rather than cleaning alone.
Yes, and these jobs require extra attention to the connector. Many 1950s-60s ranches on Lexington’s outer edges have abandoned oil flues that were crudely adapted to wood inserts or gas appliances. DuraFlex Appliance Connector Kits often fail at these junctions. We inspect the full connector path with the camera and replace with genuine DuraFlex components or documented equivalents when needed.
Everything. A proper multi-flue cap keeps rain, snow, and debris out of the flue, reducing the moisture load that drives creosote formation and liner corrosion. In Lexington’s severe freeze-thaw climate, an uncapped flue accelerates both problems. We install DuraFlex Tee & Cap Assemblies sized for multi-flue masonry stacks, and we always assess cap condition during cleaning.
Often we can replace just the damaged top section with a new DuraFlex length and proper top plate, saving the intact lower run. The camera tells us exactly where the pitting stops and sound metal begins. If corrosion extends below the smoke chamber or multiple sections are compromised, we recommend full replacement and give you the photo evidence to decide. Call (781) 649-9326 for an exact assessment; estimates are free.
Service Areas Near Lexington

We run DuraFlex service throughout Middlesex County, with regular work in DuraFlex service in Waltham - our base - plus DuraFlex service in Newton, Cambridge, Winchester, and Medford. Lexington’s colonial chimney stock is unique in the region, but our crew knows the variations across every nearby town.
Book Your DuraFlex Service in Lexington Today
Call (781) 649-9326 to book your DuraFlex chimney cleaning. A live person answers 24/7. We’ll give you a written price before any work starts, a camera inspection and photo record as standard, and the 365-Day Done Right Promise on every job. Corrine Halstead and the crew at Level Two Chimney Waltham look forward to showing you exactly what your flue looks like.
Written by Corrine Halstead, Owner at Level Two Chimney Waltham, serving Lexington since 2009.





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