Chimney Cap & Crown in Medford - Made to Fit, Priced in Writing

Fast, Reliable Chimney Cap & Crown Across Medford

A chimney cap and crown repair in Medford typically runs $340-$890 depending on whether you’re sealing a hairline crack or rebuilding a failed crown from the brick up. Most Medford jobs are completed in a single visit, and every recommendation starts with camera footage you can see for yourself. Call (781) 905-8338 - a live person answers, 24 hours a day.

Call (781) 905-8338

We’ve been dispatching crews to Medford from our Boston office for decades. We know the triple-deckers along Salem Street, the colonials tucked behind Tufts, and the low-lying flats near Riverside Avenue where the Mystic River valley holds moisture against brick like nowhere else in Middlesex County. That local geography matters. A crown that lasts twenty years in Winchester’s drier air often shows mortar-joint failure in ten to twelve here. We don’t guess at why your chimney is failing. We run a Level 2 camera inspection, show you the photos, and give you a plain-English verdict before any work is priced.

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

Medford homeowners tend to stay put. The 55-to-75-year-olds who call us have owned their houses for twenty, thirty, sometimes forty years. They’ve also been burned by a contractor who talked fast, produced no documentation, and left them holding an invoice for work they couldn’t verify. We built this company to be the alternative to that.

Our reputation in Medford rests on four things you can check yourself. First, the 90-Day Done Right Promise - in writing, no arguing. If it’s not right, we come back. Second, every Level 2 inspection ends with dated photos and a verdict written in plain English, not code jargon. Third, our technicians are background-checked, uniformed, and carry professional-grade materials from brands like Gelco, Copperfield, and DuraFlex - no builder-grade substitutes. Fourth, when you call (781) 905-8338, a live person answers. Not a voicemail. Not a callback queue. A real human, every hour of every day.

We’re familiar with Medford’s specific headaches: the multi-flue chimneys on triple-deckers where landlord-tenant responsibility gets murky, the coal-era flues converted to gas that draft poorly because they’re dramatically oversized, the efflorescence blooming on south-facing stacks in the river flats. That knowledge saves time on the job and money on the estimate.

Our Chimney Cap & Crown Services in Medford

Cap Installation

New cap installation in Medford runs $280-$520 for a standard single-flue stainless unit with screen, or $640-$1,180 for a multi-flue cap covering two or three flues on a triple-decker stack. We size caps to the flue, not the chimney top. An oversized cap on an undersized flue traps moisture and creosote. We measure with the camera running, then show you why that specific diameter matters before we order.

Cap Replacement

Cap replacement in Medford usually means removing a rusted or wind-damaged unit that was never properly secured. Coastal storms coming up the Mystic River valley can lift poorly fastened caps right off the flue. We replace with Famco or Copperfield galvanized or stainless caps, fastened with proper masonry anchors, not sheet-metal screws that pull out in the first hard wind. Typical replacement: $240-$480.

Crown Repair

Crown repair is our most called-for service in Medford, and for good reason. The original coal-era crowns on most 1885-1940 chimneys here were poured flat or with minimal slope. Water pools. In the humid microclimate along the Mystic River and Mystic Lakes, that water finds every hairline crack and wicks into mortar joints. We regularly see crowns that have failed structurally while the brick below looks sound - until the spalling starts.

Our Chimney Cap & Crown crew rebuilds crowns with proper slope and drip edge, using Gelco cast-in-place crown mix or poured concrete with reinforcement, depending on what the inspection shows. Minor crack repair with flexible crown coating: $340-$580. Full crown rebuild: $720-$1,340.

Crown Coating

Crown coating is the right call when the crown is structurally sound but weather-checked - hairline cracks, slight erosion, no exposed aggregate. We clean the surface, apply a flexible elastomeric coating rated for freeze-thaw cycling, and guarantee the seal for two years. In Medford’s river-valley humidity, this preventive step often adds five to seven years of life to a crown that would otherwise need full rebuild. Cost: $340-$520. We won’t sell you a coating if the camera shows the crown is too far gone. That’s a promise.

Multi-Flue Cap

Multi-flue caps are essential on Medford’s triple-deckers and two-families, where one chimney serves two or three units. A single generic cap stretched across multiple flues leaves gaps. Rain gets in. Squirrels nest. One tenant’s flue backs up into another’s unit. We measure each flue individually and fabricate or order a cap that seals each opening with its own screen and lid. Typical multi-flue cap in Medford: $640-$1,180 installed, including custom measuring and masonry anchoring.

Custom Cap

Custom caps solve problems standard sizes can’t: odd flue dimensions on pre-1920 chimneys, decorative requirements on historic homes near the Mystic Valley Parkway, or extended overhangs needed to shed water on a chimney exposed to prevailing wind. We template on site, fabricate through Copperfield or local sheet-metal shops, and install with the same no-surprise pricing. Custom work starts around $780 and scales with material and complexity.

Trusted Brands We Service in Medford

We stock parts and materials from Gelco, Copperfield, DuraFlex, and Famco - brands that professional sweeps have relied on for decades, not the builder-grade substitutes you’ll find at big-box stores. For Medford customers, that means faster turnaround. We don’t wait two weeks for a cap to ship from a distributor; we pull it from our Boston inventory and schedule installation, often within days of your call. Every part is warrantied, and every installation is documented with before-and-after photos.

Common Chimney Cap & Crown Problems We See in Medford Homes

• Flat coal-era crowns pooling water. Most Medford chimneys built between 1885 and 1940 were topped with a nearly level concrete wash, not a sloped structural crown. Water sits. In the Mystic River valley’s higher humidity, that standing water penetrates cracks in ten to twelve years instead of the twenty you’d expect in drier Winchester or Lexington. The fix is a rebuilt crown with proper pitch and a bonded water-repellent treatment.
• Single generic caps on multi-flue triple-deckers. A cap stretched across three flues on a Salem Street triple-decker leaves gaps between flue tiles. Rain enters the center flue. A squirrel nests in the right. The left flue, venting a furnace, backdrafts into the second-floor unit. Individual flue caps or a properly fitted multi-flue cap solves this permanently.
• Crown cracks wicking river-valley moisture into mortar joints. Our tech was called to a triple-decker near Riverside Avenue where the owner blamed “old brick” for spalling on the exposed stack. A Level 2 inspection with the camera showed the crown had cracked and was wicking river-valley moisture straight into the mortar joints. We documented the crack on camera for both the landlord and the first-floor tenant, then rebuilt the crown with a Gelco cast-in-place mix, repointed the affected joints, and finished with a breathable water-repellent - no upsell, just what the footage showed.
• New caps installed over failing unlined flues. Because Medford’s 1885-1940 chimneys were engineered for coal and then converted to oil or gas, most original flues here are dramatically oversized for modern appliances - a condition that accelerates creosote condensation and makes a properly sized, code-compliant stainless flue liner the real fix, not a bigger cap. We see competitors sell homeowners a cap when the flue itself is the problem. Our camera inspection shows you the flue diameter, the creosote buildup, and whether the draft is pulling correctly before we recommend any cap or crown work.

Pricing for Chimney Cap & Crown in Medford, MA

We Also Serve Cities Near Medford

Our crews work Medford regularly and also handle chimney cap and crown jobs in Somerville, Winchester, Belmont, and Lexington. Each city has its own housing stock and microclimate issues - Somerville’s dense triple-deckers share Medford’s multi-flue headaches, while Winchester’s drier hills see longer crown life but more freeze-thaw cracking on south exposures. We adjust our recommendations to the location, not apply a one-size template.

FAQs - Chimney Cap & Crown in Medford