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.
Fast, Reliable Chimney Repair Across Yonkers
Chimney repair in Yonkers typically costs between $350 and $4,500 depending on scope, with most standard repairs like repointing or flashing replacement falling in the $800-$2,200 range. Most jobs are completed in a single visit, and estimates are free with no obligation. Call (914) 246-5794 to speak with a live person - we answer 24 hours a day, 7 days a week.
We’ve been dispatching crews to Yonkers from our New York City office for decades. We know the difference between a 1920s brick rowhouse off Elm Street and a mid-century cape on the eastern ridge. That matters because the repair your chimney needs depends on when it was built, what it’s made of, and what the Hudson River weather has done to it. In Yonkers, salt-laden air from the Hudson corridor corrodes galvanized chimney caps and flashing within a few seasons. Once water gets past the cap, it seeps into the crown, freezes through Westchester’s harsh winters, and starts popping the faces off your brick. We’re familiar with every stage of that failure sequence, and we know how to stop it.
Why Hearthstone Chimney Co. Is Yonkers’s Preferred Chimney Repair Company
We’ve served local communities for over 42 years. That’s not a slogan - it’s a record. A company that plans to be in town in thirty more years acts accordingly. Our Chimney Repair team has worked on hundreds of Yonkers chimneys, from the attached multi-family blocks west of the Saw Mill River Parkway to the single-family homes on the ridgeline.
Yonkers homeowners call us back because we document what we find. Every inspection ends with photos you can see and a plain-English verdict. No jargon, no scare tactics. If your chimney can safely wait another season, we’ll say so. If it can’t, we’ll show you exactly why - on camera, with the photos in your hand.
Our technicians are background-checked and uniformed. Most repairs are completed in a single visit. We use no-hassle upfront pricing: the number on the estimate is the number on the invoice. And every job is backed by our 90-Day Done Right Promise - in writing, no arguing. If it’s not right, we come back.
A live person answers every call, every hour, every day. Not a voicemail. Not a callback queue. (914) 246-5794.
Our Chimney Repair Services in Yonkers
Flashing Repair
Flashing is where your chimney meets the roof, and it’s the most common leak point we see in Yonkers. The Hudson corridor’s salt air attacks galvanized flashing fast. We’ve replaced flashing on river-facing buildings in southwest Yonkers that was rusted through in under five years. We install copper or stainless flashing from Copperfield and Famco - materials that withstand salt corrosion. A typical flashing repair in Yonkers runs $650-$1,400.

Mortar Repointing
The majority of Yonkers’s housing stock dates to the 1880s-1940s, and that old lime mortar crumbles under Westchester’s freeze-thaw cycling. In Park Hill and Nodine Hill, we regularly see joints ground to dust between bricks. Repointing removes the failed mortar and packs new, properly matched mortar in its place. A standard repointing job on a Yonkers rowhouse chimney runs $1,200-$2,800. We color-match the mortar so the repair doesn’t shout.

Spalling Brick Repair
Spalling is when brick faces pop off from water trapped inside the masonry. It’s everywhere in Yonkers’s older buildings. Once spalling starts, it accelerates - exposed inner brick absorbs more water, freezes harder, sheds more faces. We replace spalled bricks with matching reclaimed or new brick, then address the water source. Spalling repair in Yonkers typically runs $800-$2,200 depending on how many courses are affected.

Chimney Rebuilding
Sometimes the damage is too extensive for spot repair. In Yonkers’s dense rowhouse blocks, a single exterior chimney stack commonly contains three or four separate flues serving different units or appliances. Rebuilding these stacks requires tracing and labeling each flue before a single brick comes down. Improper identification has real carbon-monoxide consequences. A partial rebuild in Yonkers starts around $2,800; full rebuilds of multi-flue stacks run $4,000-$7,500. We complete most rebuilds in a single visit.

Chimney Waterproofing
After repair, we apply professional-grade breathable sealers from Gelco and Olympia Chimney. These products let moisture escape from inside the masonry while blocking rain from outside. Critical in Yonkers, where Hudson fog and freeze-thaw cycles saturate brick year-round. Waterproofing a typical Yonkers chimney runs $450-$950.

Tuckpointing
For historic Yonkers masonry where appearance matters as much as function, tuckpointing creates fine, decorative mortar lines that restore the original look. More labor-intensive than standard repointing, but essential for pre-war buildings in designated areas. Tuckpointing in Yonkers runs $1,800-$3,500.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
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.
Trusted Brands We Service in Yonkers
We stock parts and materials from DuraFlex, HeatShield, Gelco, Olympia Chimney, Famco, and Copperfield - professional-grade brands, no builder-grade substitutes. For Yonkers customers, that means faster turnaround. We don’t order parts from a catalog and make you wait two weeks. Our trucks carry stainless caps, copper flashing, and liner components sized for the multi-flue stacks common in your neighborhoods. When we find a cracked clay liner in a Park Hill rowhouse, we can often install a HeatShield liner the same day.
Common Chimney Repair Problems We See in Yonkers Homes
- Salt-air corrosion of galvanized components. The Hudson corridor channels salt-laden air that destroys galvanized chimney caps and flashing within a few seasons. Once the cap fails, water enters the crown and begins the cycle that leads to spalling and structural damage. We replace these with stainless or copper from Famco and Copperfield - materials built for coastal exposure.
- Freeze-thaw damage to century-old clay flue liners. Westchester’s heavy freeze-thaw cycling cracks the clay flue tiles common in Yonkers’s 1880s-1940s housing stock. In attached stacks, a crack in one unit’s liner can leak carbon monoxide into an adjacent flue. We identify these cracks with our Level-2 camera inspection and upgrade to proper stainless or HeatShield liners.
- Improperly identified flues in multi-unit stacks. In Yonkers’s older rowhouse blocks, a single exterior chimney stack commonly contains three or four separate flues. If a sweep doesn’t trace and label each flue before repair, appliances can get cross-connected. Back-drafting results. This is far more common here than in neighboring single-family suburbs like Bronxville or Scarsdale.
- Layered fuel-conversion history without proper relining. Yonkers’s pre-1940 attached buildings were converted from coal to oil to gas over successive decades, often without updating liners for modern appliance temperatures and venting requirements. The original clay liners, sized for coal, are now undersized and deteriorated. Liner integrity is the defining safety issue for Chimney Repair in Yonkers.
Pricing for Chimney Repair in Yonkers, NY
Here’s what chimney repair costs in the Yonkers market:
- Flashing repair: $650-$1,400
- Mortar repointing: $1,200-$2,800
- Spalling brick repair: $800-$2,200
- Chimney waterproofing: $450-$950
- Partial chimney rebuild: $2,800-$4,500
- Full multi-flue stack rebuild: $4,000-$7,500
- Stainless liner installation (per flue): $1,800-$3,200
What moves the needle: accessibility (steep roof, tight alley), extent of water damage behind the visible brick, and whether multiple flues in a shared stack need simultaneous upgrade. We assess all of this during our free estimate and give you the full number before any work begins. No surprises on the bill. Call (914) 246-5794 for your exact quote - estimates are free.
We Also Serve Cities Near Yonkers
Our crews work throughout southern Westchester. We regularly repair chimneys in Bronxville, Tuckahoe, Mount Vernon, and Pelham - each with its own building stock and weather exposure, but none with Yonkers’s density of shared multi-flue stacks. If you’re in one of these neighboring communities, the same live-answer phone and same 90-Day Done Right Promise apply.
Serving Yonkers, NY - Our Local Coverage Area
We’re based in the Yonkers 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 - Chimney Repair in Yonkers
Annual inspection is the minimum for Yonkers chimneys, and we recommend Level-2 camera inspection every two to three years for pre-1940 buildings with shared stacks. The combination of salt-air corrosion, heavy freeze-thaw cycling, and layered fuel-conversion history means problems develop faster than in inland suburbs. Call (914) 246-5794 to schedule - estimates are free.
A single exterior stack in Yonkers’s older rowhouse blocks often contains three or four flues serving separate units or appliances, and decades of unpermitted modifications have left many mislabeled or cross-connected. Our technician must trace each flue with a camera and smoke test before any repair to prevent carbon monoxide from entering neighboring units. We were called to a three-unit rowhouse on Park Hill for a chimney repair after a third-floor tenant noticed staining on the ceiling. Our tech traced the flues and found the middle unit’s liner had cracked clay tiles and missing mortar joints, letting flue gases seep into the neighboring unit’s smoke chamber. We installed a HeatShield liner in that flue and repointed the crown, restoring safe separation between the units.
The galvanized cap and flashing fail first from Hudson salt air. Once they rust through, water enters the crown, freezes, and begins spalling the brick below. Repairing it means replacing the cap with stainless or copper, installing new flashing, sealing or rebuilding the crown, and replacing any spalled brick. Caught early, this runs $800-$2,200. Left too long, you’re looking at partial or full rebuild territory. Call (914) 246-5794 for an exact quote - estimates are free.
Third-degree creosote, the hardened, tar-like glaze that forms from slow-burning fires and poor draft, cannot be removed by standard brushing. It requires rotary mechanical removal or chemical treatment, followed by camera verification that the flue is clean. In Yonkers’s river-facing buildings, back-draft conditions from Hudson corridor winds accelerate creosote buildup. We perform this service and document the results with photos. Call (914) 246-5794 to schedule - estimates are free.
Exterior masonry work on shared stacks in Yonkers’s multi-family buildings typically requires a permit from the City of Yonkers Building Department, and work affecting multiple units may need coordination with neighboring owners or the building’s management. We handle permit applications as part of our service and coordinate access to all affected units. The 90-Day Done Right Promise covers our work regardless of permit complexity. Call (914) 246-5794 to discuss your building’s specific requirements - estimates are free.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Yonkers and local communities for over 42 years.





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