Chimney Cap & Crown in Lexington, MA - Same-Day Service, Done Right the First Time

Fast, Reliable Chimney Cap & Crown Across Lexington

Chimney cap and crown repair in Lexington, MA typically costs $180-$650 depending on whether you need a simple cap replacement or full crown reconstruction, and our Chimney Cap & Crown team completes most jobs in a single visit. We’ve been driving to Lexington since 1984, and we know the difference between a 1950s cape off Woburn Street and a pre-Revolutionary colonial on Hancock Street - because the crown that protects your flue has to fit the chimney that was built, not the one a catalog thinks you have. If you’re seeing water stains on your firebox, hearing animals in the flue, or spotting crumbled mortar on your roof, call (844) 803-1545. A live person answers, 24 hours a day, and we’ll give you a free estimate with upfront pricing before any work begins.

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Why Hearthstone Chimney Co. Is Lexington’s Preferred Chimney Cap & Crown Company

We’ve worked on Lexington chimneys for over 42 years. That means we’ve replaced caps on the post-war capes in ZIP code 02421 where the original clay flue tiles are finally giving out after seven decades of freeze-thaw cycling. We’ve rebuilt crowns on fieldstone chimneys near the Battle Green that were constructed before modern mortar standards existed. This is not theoretical knowledge - it’s the accumulated result of showing up, documenting what we find with our Level-2 camera inspection, and explaining it in plain English.

Our Lexington customers call us back because we leave photos they can see and a written verdict they can understand. The 90-Day Done Right Promise means if something isn’t right, we make it right - in writing, no arguing, no paperwork chase. Calls are answered by a live person, not a callback queue, every hour of every day. Our technicians are background-checked, uniformed, and carry the professional-grade materials to finish most cap and crown jobs in one trip.

We don’t subcontract. We don’t bait-and-switch. The number on your estimate is the number on your invoice. That’s the square deal.

Our Chimney Cap & Crown Services in Lexington

Cap Installation

New cap installation in Lexington runs $280-$450 for a standard single-flue stainless steel cap, with multi-flue and custom configurations ranging higher. On the older homes near the Battle Green, we frequently encounter chimney stacks that serve multiple flues from a single exterior chase - a parlor fireplace, a bedroom hearth, and sometimes the ghost of a former cooking fireplace. These require multi-flue caps measured to fit irregular dimensions that no big-box inventory carries. We fabricate or source from Copperfield and Famco to get the exact fit, because a cap that doesn’t seat properly is a cap that leaks.

Cap Replacement

Replacing a failed or missing cap in Lexington typically costs $180-$320. The mature hardwood canopy along streets like Marrett Road and Lowell Street keeps chimneys shaded and moisture-laden for longer stretches than more open suburban layouts. That retained moisture accelerates rust on galvanized caps and can rot out the mounting hardware entirely. When we remove an old cap, we inspect the flue tile edges beneath it - on 60-70-year-old chimneys in eastern Lexington, those tiles are often spalled or cracked from decades of freeze-thaw, and catching that now prevents a water intrusion problem from becoming a liner rebuild later.

Crown Repair

Crown repair in Lexington generally falls between $350-$550 for crack sealing and resurfacing with professional-grade crown coat material. The crown is the concrete or mortar slab that seals the top of your chimney between the flue tiles and the edge brick. In Lexington’s climate, crowns take a beating - the town crosses the freezing threshold dozens of times each winter, and water that seeps into hairline cracks expands, widens them, and eventually separates the crown from the flue tile surround. We use HeatShield and other professional-grade materials formulated for New England’s thermal aggression, not the thin brush-on products that fail in two seasons.

Crown Coating & Reconstruction

Full crown reconstruction in Lexington ranges from $650-$1,200 depending on chimney size and access. When a crown has deteriorated past the point where coating will hold - common on chimneys that haven’t been maintained since the 1980s or 1990s - we form and pour a new concrete crown with proper slope and overhang to shed water away from the masonry below. On pre-1800 chimneys near Hancock Street, we sometimes find crowns that were never properly formed at all, just a slather of old mortar that has eroded to nothing. We rebuild these with the same care we’d apply to our own home, because a crown done right protects everything beneath it for decades.

Trusted Brands We Service in Lexington

We work exclusively with professional-grade materials from Famco, Copperfield, and DuraFlex - brands that manufacture to specification, not to price point. Our trucks carry the common Lexington cap sizes and crown repair materials, so we’re not ordering parts and making you wait. For custom caps on multi-flue colonial chimneys or unusual flue configurations, we source through Copperfield and Famco with turnaround times that keep your project moving. No builder-grade substitutes, no “this will do” compromises. The materials we use are the materials we’d want on our own chimney.

Common Chimney Cap & Crown Problems We See in Lexington Homes

• Missing or damaged caps after winter storms. Lexington’s mature tree canopy drops branches during nor’easters and ice events, and we’ve replaced dozens of caps crushed by oak or maple limbs, particularly along the older streets where the canopy is tallest. A missing cap invites squirrels, raccoons, and rain directly into your flue.
• Crown cracks from freeze-thaw cycling. Eastern Massachusetts’s aggressive freeze-thaw pattern - Lexington regularly crosses 32°F dozens of times each winter - turns microscopic crown cracks into water highways. By spring, that water has reached the smoke chamber and started deteriorating mortar joints you can’t see from the ground.
• Improperly sized caps on multi-flue chimneys. On colonial-era homes near the Battle Green, we find caps that were installed by previous owners to fit one flue while leaving others exposed, or universal caps that don’t account for the shared smoke chamber beneath. This misconfiguration creates draft problems and creosote accumulation that standard sweeps miss.
• Original crowns eroded on post-war homes. The 1950s-1960s capes and colonials in ZIP 02421 often have crowns that were never more than a thin mortar wash. After 60-70 years, that wash has washed away entirely, leaving the top course of brick exposed to saturation and spalling.

Pricing for Chimney Cap & Crown in Lexington, MA

We Also Serve Cities Near Lexington

Our Chimney Cap & Crown in Lexington service extends to neighboring communities, and we regularly travel from Arlington to Bedford, Winchester to Burlington for cap and crown work. If you’re in one of these towns and have a multi-flue colonial chimney or a post-war cape showing crown deterioration, the same technicians and the same materials apply. We also handle Chimney Liner & Rebuild in Lexington when crown damage has progressed to flue tile failure, and Chimney Cleaning & Sweep in Lexington to keep the system clear and safe year-round.

FAQs - Chimney Cap & Crown in Lexington