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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AfterTrusted Chimney Cap & Crown for Boston Homeowners
According to our Chimney Cap & Crown cost guide, a properly fitted chimney cap and intact crown in Boston typically costs between $180 for a basic cap installation and $1,800 for full crown rebuilds, with most jobs completed in a single visit. At Hearthstone Chimney Co., we’ve been protecting Boston chimneys from salt air, freeze-thaw cycles, and driving nor’easter rains for over 42 years. Call us at (857) 597-5950 - a live person answers, 24 hours a day.
Boston’s coastal climate is hard on masonry. The freeze-thaw cycles of a Back Bay winter can crack a concrete crown in three seasons. Salt-laden air off the harbor accelerates metal fatigue on caps in South Boston and the Seaport. For Chimney Cap & Crown in Boston, we’ve replaced caps in Beacon Hill that were installed wrong twenty years ago and have been funneling water into the flue ever since. Our technicians carry professional-grade caps and crown repair materials from Gelco, Olympia Chimney, and Famco on every truck, and most jobs finish in one visit with no-hassle upfront pricing - the number on the estimate is the number on the invoice.
Russell Haines founded Hearthstone Chimney Co. in 1984, and we’ve built our reputation on documented inspections and plain-English verdicts. Every cap and crown job starts with a Level-2 camera inspection. You see the photos. We explain what you’re looking at. Then we quote the work, in writing, with our 90-Day Done Right Promise - if it’s not right, we make it right, no paperwork, no arguing. That’s the Keystone Standard, and it’s governed by our K.E.Y.S. values: Krafted right, Every time, Your home first, Standing behind it.
What Our Chimney Cap & Crown Service Includes
Cap Installation
A chimney cap is a metal cover that sits over your flue, keeping rain, animals, and debris out while letting smoke escape. In Boston, we install caps on chimneys that have never had one - common in older triple-deckers in Dorchester and Roslindale where the original builder skipped this step. Our technicians measure your flue on-site and fit a cap from Gelco or Olympia Chimney with proper clearance and secure mounting. A cap installed wrong will blow off in the first March nor’easter; we anchor ours to withstand Boston wind loads.
Cap Replacement
Caps rust, warp, or get damaged by falling branches and ice loads. We replace caps that are beyond repair, often finding that the original was the wrong size or material for the application. In Jamaica Plain and West Roxbury, we regularly see galvanized caps that lasted five years instead of the fifteen a stainless steel cap would have given. We remove the old cap, inspect the flue tile for hidden damage, and install a replacement that matches your fuel type and venting requirements. The old cap comes with us; your yard stays clean.
Crown Repair
The crown is the concrete slab that tops your chimney, sloped to shed water away from the flue. Cracks in the crown are the leading cause of chimney interior damage in Boston, where freeze-thaw opens hairlines into quarter-inch gaps in a single winter. We repair crowns with partial rebuilds or professional-grade crown coating systems, depending on the extent of damage. In Somerville Chimney Cap & Crown calls and Cambridge calls, we often find crowns that were poured flat or without an overhang - both design flaws we correct so water runs off, not in.
Crown Coating
Crown coating is a specialized masonry sealant applied to sound but weathered concrete crowns to prevent water penetration. It’s not a fix for structural cracks, but for crowns with surface deterioration and minor hairlines, it’s a cost-effective alternative to full rebuild. We use HeatShield crown coating products, applied after thorough cleaning and prep. The coating forms a flexible, waterproof membrane that moves with the concrete through freeze-thaw cycles. A coated crown in Boston typically adds ten to fifteen years of service life if the underlying concrete is solid.
Multi-Flue Cap
Multi-flue caps cover chimneys with two or more flues emerging from the same crown, common in Boston’s converted multi-family housing and larger single homes in Brookline and Newton. A single multi-flue cap protects all flues with one properly sloped cover, eliminating the gaps between individual caps where water and squirrels enter. We measure the full crown dimensions and specify a cap with adequate height clearance for each flue and proper overhang beyond the crown edge. Installation requires precise fit; a gap of even half an inch invites water behind the cap and into the masonry.
Custom Cap
Some Boston chimneys need what stock catalogs don’t carry - oversized flues, unusual shapes, heritage masonry that can’t be drilled for standard mounting, or aesthetic requirements for historic districts. We fabricate and source custom caps in copper, stainless steel, and powder-coated aluminum to match your chimney and your home. In Beacon Hill and the South End, we’ve fitted caps to chimneys built before standard sizes existed, working with dimensions taken on-site and fabricated to order. The result fits like it was made for your chimney, because it was.
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.
Brands We Service for Chimney Cap & Crown
We’ve worked with Gelco caps since the early 1990s and know their product line thoroughly - from standard single-flue models to their multi-flue and wind-resistant designs. Gelco’s stainless steel caps hold up well in Boston’s salt air, and we stock common sizes for same-day replacement on most calls. Their mounting systems are straightforward when you know the tricks; we’ve installed enough of them to spot the fit issues that cause callbacks.
Olympia Chimney manufactures caps with excellent spark arrestor screens, important for Boston’s wood-burning households in areas with dense housing. We’ve serviced hundreds of Olympia units and carry their replacement parts. Famco produces specialty caps including draft-inducing designs and custom-fabricated options for unusual flue configurations. Whether you have Gelco, Olympia Chimney, Famco, or any other make on your chimney, we can inspect it, repair it, replace it, or improve it. If the brand is no longer manufactured, we match the function with a current product that fits properly.
Signs You Need Chimney Cap & Crown Right Now
- Water stains on your ceiling near the chimney. This means water is getting past the cap or crown and running down the flue interior. In Boston’s row houses, the stain often appears in an upstairs bedroom or on the plaster of a shared wall. The longer it continues, the more damage to framing, insulation, and masonry - and the more expensive the repair.
- Visible cracks or spalling on the concrete crown. The crown is your chimney’s umbrella. Once concrete starts flaking or cracking, water enters with every rain and expands with every freeze. We’ve rebuilt crowns in Mattapan and Hyde Park where the homeowner watched cracks grow for three winters before calling - by then, the flue liner was damaged too.
- Rust streaks down the chimney face. Rust means metal is deteriorating, usually the cap itself or the flue liner beneath it. A rusted cap lets water straight into the flue. A rusted liner creates gaps that can allow combustion gases into living spaces. Either way, it’s not a cosmetic issue.
- Animals or nesting debris in the flue. Squirrels, raccoons, and starlings enter uncapped chimneys readily, especially in Boston’s tree-lined neighborhoods like Jamaica Plain and West Roxbury. A nest blocks airflow and creates a fire hazard. If you’ve heard scratching or found debris in your firebox, your cap is missing, damaged, or improperly fitted.
- Draft problems or smoky fireplaces. A cap that’s too small, clogged with creosote, or installed without proper clearance can restrict airflow. So can a crown that’s deteriorated enough to partially block the flue opening. Before we replace any cap for draft issues, we verify the flue size and chimney height are correct for your appliance - sometimes the cap is the symptom, not the cause.
Our Chimney Cap & Crown Process - Step by Step
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Schedule and confirm. Call (857) 597-5950 any time - day, night, weekend. A live person answers, checks availability, and confirms your appointment with a window that works. We’ll be there when we say.
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Level-2 camera inspection. Our technician arrives in uniform, background-checked, with photo ID. We set up our camera system and inspect the flue interior, the crown surface, and the cap mounting area. You see the photos on a tablet. We explain what we’re seeing in plain English - no jargon, no pressure.
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Written estimate with options. Based on the inspection, we present one or more solutions: repair, replace, or coat, with clear pricing for each. The estimate is itemized and fixed. No surprises on the bill. For cap replacements, we show you the proposed model and explain why it fits your fuel type and local conditions.
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Professional installation or repair. Most jobs complete in a single visit. We use professional-grade materials from our stocked inventory - no running to the supply house on your time. Crown repairs get proper cure time if needed; we schedule return visits only when the work requires it, never to finish what should have been done the first day.
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Final documentation and guarantee. We photograph the completed work. You receive a report with before-and-after images, a description of what was done, and our 90-Day Done Right Promise in writing. If anything’s not right, we come back. No arguing. That’s been our way for over 42 years.
How Much Does Chimney Cap & Crown Cost in Boston?
A standard chimney cap installation in Boston typically runs $180-$450, depending on flue size, material, and mounting requirements. Cap replacement on an existing mount usually falls in the $220-$550 range. Crown coating for sound concrete with surface deterioration runs $400-$800. Partial crown repair - addressing cracks and rebuilding edges while the center remains solid - typically costs $600-$1,200. Full crown rebuilds, required when the concrete is cracked through or spalling deeply, range from $1,200-$1,800 in the Boston market. Custom caps and multi-flue installations start around $500 and scale with size and material.
Several factors move the price. Accessibility matters: a flat-roof triple-decker in Dorchester with safe ladder access costs less than a steep slate roof in Brookline requiring rigging. Flue condition affects cap installation - if the flue tile is cracked or misaligned, we repair it before mounting a new cap, because a cap on a damaged flue hides the problem until it’s worse. Material choice drives long-term value: galvanized steel costs less upfront but rusts in Boston’s salt air; stainless steel or copper costs more and lasts decades.
To avoid overpaying, get an inspection with photos you can see. We’ve seen Boston homeowners quoted full crown rebuilds when crown coating would have sufficed, and quoted custom fabrication when a standard cap fit perfectly. Our estimates are free, itemized, and fixed. The number we quote is the number on the invoice. We also offer a permanent 5% Senior and Veteran discount, and $50 off any repair over $250. If you have a written estimate from another company, we’ll give you a free second opinion - documented with our own camera inspection.
Chimney Cap & Crown Near Boston - Our Service Area
We cover Boston and the surrounding communities with the same single-visit efficiency. From Chimney Cap & Crown in Boston proper through Chimney Cap & Crown in Quincy and Chimney Cap & Crown in Revere, our trucks carry inventory for common cap sizes and crown repair materials. Typical response times range from same-week in Boston, Quincy, and Revere to within ten days for outlying towns. We also serve Randolph, Milton, Hingham, Chelsea, Abington, Hull, Avon, Holbrook, and Cohasset. Wherever you are in the metro area, the process is the same: documented inspection, plain-English verdict, fixed-price estimate, work done right.
Serving Boston, MA - Our Local Coverage Area
We’re based in the Boston area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions - Chimney Cap & Crown in Boston
A chimney cap is a metal cover that protects your flue opening from rain, animals, and debris. The crown is the concrete slab that tops your masonry chimney, sloped to shed water away from the flue and masonry walls. You need both because the cap guards the flue itself while the crown protects the chimney structure; a missing cap lets water into the flue, and a cracked crown lets water into the masonry, where freeze-thaw cycles destroy brick and mortar from within. In Boston’s climate, and for Chimney Cap & Crown in Chelsea as well, both components are essential to chimney longevity.
Most cap installations and replacements take one to two hours. Crown coating requires a full day including prep and cure time. Partial crown repairs typically take three to four hours; full rebuilds take a full day and may require a return visit if weather interferes with curing. We complete most jobs in a single visit, and we’ll tell you upfront if yours will need two. Call (857) 597-5950 to schedule - estimates are free.
Cap installation runs $180-$450, cap replacement $220-$550, crown coating $400-$800, partial crown repair $600-$1,200, and full crown rebuild $1,200-$1,800. Custom and multi-flue caps start around $500. Your specific price depends on flue size, roof access, material choice, and whether underlying repairs are needed. We provide itemized, fixed-price estimates after inspection - no surprises. Call (857) 597-5950 for your exact quote.
Yes. We have extensive experience with Gelco, Olympia Chimney, and Famco products, and we stock common replacement caps and parts. We’ve installed and repaired hundreds of units from these manufacturers across Boston. If your cap is from another brand, or the original manufacturer is out of business, we match function with a properly fitted current product. Call (857) 597-5950 to discuss your specific cap.
We answer calls 24 hours a day, 7 days a week, and we prioritize active water intrusion, animal entry, and storm damage. A live person takes your call, not voicemail or a callback queue. For true emergencies - a cap blown off in a storm, visible water pouring into the firebox - we aim to respond within 24 hours. For urgent but non-emergency situations, we typically schedule within the week. Call (857) 597-5950 any time to discuss your situation.
Every job is backed by our 90-Day Done Right Promise in writing: if it’s not right, we make it right, no paperwork, no arguing. Beyond that, manufacturer warranties apply to the products we install - Gelco and Olympia Chimney caps carry their own material warranties, and HeatShield crown coatings include product-specific guarantees. We document what warranty applies to each component so you have it in writing. Our labor guarantee is the 90-Day Promise, and we’ve honored it without exception for over 42 years.
Clear a path to your fireplace or stove so our technician can access the firebox for the camera inspection. Move any furniture or valuables directly beneath the chimney area, as dust and small debris may fall during the inspection. Ensure we have access to your roof area - unlock gates, secure pets, and let us know about any access issues when you call. You don’t need to clean the chimney beforehand; that’s part of our inspection process. We’ll handle everything else and leave your home as we found it.
Schedule Your Chimney Cap & Crown Service in Boston Today
Call (857) 597-5950 now. A live person answers, 24 hours a day, every day. We’ll schedule your free estimate, send a background-checked, uniformed technician with a camera and a plain-English approach, and quote your work with no-hassle upfront pricing. The job gets done right, documented with photos, and backed by our 90-Day Done Right Promise in writing. No surprises. No arguing. Just the thing done correctly, the way Russell Haines has run Hearthstone Chimney Co. since 1984.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Boston since 1984.