Chimney Repair in Medford - You See the Footage Before You Get a Price

Fast, Reliable Chimney Repair Across Medford

Chimney repair in Medford typically costs between $350 for minor mortar repointing and $4,500 for partial chimney rebuilding, with most standard repairs falling in the $800-$2,200 range. Most jobs are completed in a single visit, and every repair recommendation comes with photos from our Level-2 camera inspection so you can see the damage for yourself before deciding.

Call (781) 905-8338

We’ve been answering calls from Medford homeowners for over 42 years. Our crews know the triple-deckers along Highland Avenue, the colonials near Tufts, and the two-families clustered around the Mystic River flats. Dispatch is coordinated from our Boston office, but our technicians live in the area and carry the parts to fix most problems without a second trip. If your chimney is leaking, drafting poorly, or shedding brick, call us at (781) 905-8338. A live person answers, 24 hours a day.

Why Hearthstone Chimney Co. Is Medford’s Preferred Chimney Repair Company

Medford’s housing stock is unlike anywhere else in Middlesex County. The city was built out fast between 1885 and 1940, when streetcar lines from Boston made it a commuter haven. That era packed Medford with triple-deckers and two-family homes whose chimneys were engineered for coal heat, later converted to oil or gas, and now often vent modern appliances through flues that are oversized, unlined, or both. Our Chimney Repair team has documented thousands of these systems. We know what failure looks like in a Medford chimney before it becomes dangerous.

Our reputation here was built slowly. Homeowners in West Medford, South Medford, and the Hillside neighborhoods call us back because we show them camera photos, explain what they’re looking at in plain English, and put our 90-Day Done Right Promise in writing with no arguing. Background-checked, uniformed technicians arrive when scheduled. The price we quote is the price on the invoice. We’ve been doing this since 1984, and we plan to be doing it when your grandchildren own the house.

Calls are answered by a live person, every hour of every day. Not a voicemail. Not a callback queue. If you smell smoke where you shouldn’t, or water is coming through your ceiling near the chimney, someone will pick up.

Our Chimney Repair Services in Medford

Mortar Repointing

Medford’s river-valley location means higher ground-level humidity than surrounding towns, and that moisture attacks mortar joints from the inside out. In the low-lying neighborhoods near Riverside Avenue and the Mystic Lakes, we’ve seen joints deteriorate to powder in 10-12 years that would last 20 in a drier climate. Repointing removes the failed mortar to proper depth and packs new, color-matched mortar that seals the wall and restores structural integrity. We grind, we don’t rake, so the new bond is sound. Most repointing jobs on a standard Medford triple-decker chimney run $800-$1,800.

Spalling Brick Repair

Spalling - the face of the brick popping off in flakes - is epidemic on Medford chimneys, and homeowners often blame age alone. The real driver is freeze-thaw cycling supercharged by river-valley moisture. Water gets in through failed crowns or open joints, freezes, and pushes the brick face off. We replace spalled units with matching brick where possible, then seal the crown and treat the masonry with a professional-grade water repellent. In a field call to a triple-decker near Riverside Avenue, the landlord blamed age for crumbling brick around the chimney crown. Our camera run showed the real culprit: river-valley moisture driving spalling and efflorescence, plus a flue liner that had failed because the original coal flue was venting a modern gas boiler. We repointed the joints, rebuilt the crown, and installed a code-compliant stainless liner - and the draft problems vanished.

Chimney Waterproofing

Water is the enemy of every chimney, but in Medford it’s a more patient and persistent enemy than most homeowners realize. After repointing or spall repair, we apply a silane-siloxane water repellent that penetrates the masonry and lets vapor escape while blocking liquid water. This isn’t the thick-film sealer sold at hardware stores that traps moisture and accelerates damage. We use professional-grade treatments compatible with the historic brick common in Medford’s 1885-1940 housing stock. A waterproofing treatment on a typical Medford chimney runs $450-$950 and extends the life of your mortar and brickwork by years.

Flashing Repair

The intersection where your chimney passes through the roof is the most common leak point we find in Medford’s older homes. Original flashing on these houses was often lead or galvanized steel that has corroded, pulled loose, or been damaged by ice dams on low-slope roofs common in the city. We fabricate and install new step flashing and counterflashing, sealed with high-temperature sealant, and we document the repair with photos. Most flashing repairs run $550-$1,400 depending on roof pitch and accessibility.

Chimney Rebuilding

When deterioration has compromised the structural wall - common in Medford chimneys that have gone unaddressed through multiple ownership changes - partial or full rebuilding is the only safe option. We dismantle to sound masonry, salvage matching brick where possible, and rebuild with proper bond and weatherproofing. A partial rebuild of a Medford triple-decker chimney typically runs $2,800-$4,500. Full rebuilds are less common but quoted with the same upfront pricing, documented with photos at every stage.

Trusted Brands We Service in Medford

We don’t use builder-grade substitutes. Our trucks carry professional-grade materials from DuraFlex, HeatShield, and Famco, among others, so most Medford repairs are completed without waiting for parts. DuraFlex stainless liners are what we install when a Medford coal-era flue needs to be brought up to code for modern gas or oil appliances. HeatShield cerfractory sealant restores clay tile liners that are sound structurally but have gaps or minor deterioration. Famco caps and dampers keep river-valley moisture and wildlife out of the flue. When we recommend a product, it’s because we’ve watched it perform in Medford’s specific conditions.

Common Chimney Repair Problems We See in Medford Homes

• Unlined or clay-tile flues venting modern appliances. Medford’s 1885-1940 triple-deckers were built for coal. Their oversized flues now vent gas boilers and water heaters they were never sized for, causing chronic draft problems and accelerated creosote condensation that our camera inspections catch before they become hazardous.
• River-valley humidity destroying mortar joints. The Mystic River valley’s higher ground-level humidity pushes moisture deep into masonry. In neighborhoods near Riverside Avenue and the Mystic Lakes, we regularly find joints that have turned to sand in a decade, far faster than in drier upland towns like Lexington or Winchester.
• Multi-flue chimneys with unclear repair responsibility. Triple-deckers and two-families often share a chimney structure between units. Landlords and tenants dispute who pays, problems get deferred, and by the time we arrive the crown has failed and water is entering multiple flues. Our inspection reports clearly document which flues serve which units.
• Spalling brick misdiagnosed as simple aging. Homeowners in the flats near Riverside Avenue often assume crumbling brick is just what old chimneys do. The actual cause is freeze-thaw damage driven by valley moisture. Without addressing the water source, brick replacement alone wastes money.

Pricing for Chimney Repair in Medford, MA

We Also Serve Cities Near Medford

Our crews work throughout the metro Boston area. If you’re in Medford or nearby Somerville, Winchester, Belmont, or Lexington, we carry the same parts, the same camera equipment, and the same written guarantee. Dispatch is coordinated from our Boston office, but our technicians are local and know the housing stock in each town.

FAQs - Chimney Repair in Medford