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 usually means dealing with a masonry stack that’s older than the house’s current heating system. That mismatch is the root of most of what we fix. From crumbling mortar on South Broadway rowhouses to leaking flashing on the hilltop blocks east of Saw Mill River Parkway, our crews handle the full range of brick and flue work across the city. Call (914) 350-5204 for an honest assessment and a written price before any work begins. We don’t quote over the phone on guesses. We put a camera down the flue, look, and tell you what’s actually there.

Why Level Two Chimney White Plains Is Yonkers’s Preferred Chimney Repair Company
We have worked on more shared chimney stacks in Yonkers than most companies see in a decade. That matters here. Yonkers’s pre-1940 attached rowhouses and two-family homes hide problems that a single-family suburban chimney never shows. A leaking crown on one unit’s stack often means flue damage in the neighbor’s flue too. The camera-scan inspection we do on every visit, under Clause 4 of the Haven Standard, documents what we find before and after. You get the photos. If something doesn’t need fixing, we say so, in writing.
Corrine Halstead, who leads our team, has built the company around the idea that no customer should be asked to approve work they can’t see. Bad news about a liner or a chimney crown should come with evidence attached. That’s why every quote in Yonkers includes photos of the actual bricks, joints, and flue tiles, not just a line item. Our crews are background-checked and uniformed, and the license number is printed right on every quote. When we’re dispatched to Yonkers, we already know the block we’re going to.
Our Chimney Repair Services in Yonkers

Most of the work we do in Yonkers falls into four categories. The first two are masonry, the second two are about water and the flue. Here’s what each one addresses, and what we typically see in this city’s housing stock.
Mortar Repointing
Open mortar joints are the most common repair we make in Yonkers. The cold, damp wind off the Hudson, hitting west-facing chimney stacks from Ludlow to Glenwood, erodes lime mortar faster than most homeowners expect. We cut out failed joints and repoint them with a mortar matched to the original brick’s hardness. Getting the mix right keeps old brick from cracking under a repair that’s too rigid. That’s not a detail we skip.

Spalling Brick Repair
Spalling means the brick face has popped off, usually because water got in and froze. Southwestern Yonkers rowhouses are full of it, especially on chimneys where the old lime mortar wicked moisture behind the brick. We remove spalled units, replace them with matched brick where possible, and address the water entry that caused the damage. If we don’t fix the entry point first, the new brick spalls the same way in a few seasons.

Chimney Waterproofing
Brick chimneys in Yonkers soak up water like a sponge and release it slowly. Worse, the city’s many attached rowhouses mean a wet stack against a party wall stays wet longer, because it never gets sun on more than two faces. We apply vapor-permeable sealers that let the masonry breathe while keeping rain out. Paired with a proper crown repair, waterproofing stops the cycle that leads to spalling and liner damage. It is not a substitute for repointing. It’s the final step after the masonry is sound.

Flashing Repair
About a third of the chimney leaks we find at the roofline in Yonkers are flashing failures, not brick. The roofline pitch changes across the city, from flat roofs on apartment blocks near Getty Square to steep gables in the east. Old galvanized flashing is no match for decades of Hudson River weather. We install copper and steel flashing from Copperfield, cut and formed to match the existing roof membrane. A repaired flashing should outlast the roof it’s attached to.

Flue Liner Installation and Relining
This is the Yonkers specialty, for one specific reason. The oil-to-gas conversions of the past few decades left thousands of oversized terracotta flues in this city. A gas boiler venting into a flue built for an oil furnace creates cold, slow-moving exhaust that condenses inside the flue. That condensate eats mortar joints and clay tile from the inside. We reline oversized flues with properly sized stainless steel liners from DuraFlex, restoring draft and protecting the masonry. If your home was converted from oil to gas and the flue was never relined, there’s a good chance the liner is compromised right now.

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.
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AfterTrusted Brands We Service in Yonkers
We stock and install components from Olympia Chimney, DuraFlex, and Copperfield. These are the materials we count on for Yonkers’s toughest applications: stainless liners for converted flues, copper flashing for river-facing exposures, and refractory products for rebuilds. We don’t use off-brand parts to shave a bid. The materials are sourced through our buying network specifically to keep pricing reasonable, which means a DuraFlex liner installed in Yonkers costs less through us than it would through a company buying at retail. That’s Clause 1 of the Haven Standard in practice: written price, written scope, written warranty, before anything starts.

Common Chimney Repair Problems We See in Yonkers Homes

- Shared stacks with compromised flues. In attached rowhouse blocks across southwest and central Yonkers, a single exterior chimney stack often carries three or four separate flue tiles for adjacent units. When one unit’s flue fails, carbon monoxide can migrate through the party wall before any exterior damage shows.
- Oversized flues after oil-to-gas conversion. A boiler replacement without a corresponding liner change leaves a flue that’s far too big for the new appliance. The exhaust cools too quickly, condenses, and attacks the clay tile from the inside. We find this on nearly every pre-1950 Yonkers home with a gas conversion.
- River-driven spalling on west-facing stacks. The Hudson River wind pushes rain into brick on side yards and west exposures from Ludlow to Nepera Park. Freeze-thaw cycles do the rest. Loose brick can fall into narrow side alleys between attached homes.
- Crown and flashing failures at the roofline. Yonkers’s mix of flat and pitched roofs means flashing details change block to block. A crown or flashing that was never right from the start fails gradually, and the first sign is often a stain on an interior wall.
We rebuilt a shared chimney crown on a rowhouse block off South Broadway after a neighbor’s oil-to-gas conversion triggered backdrafting into two adjacent units. The original clay tile liner had crumbled from years of condensation eating at the mortar joints. The party-wall stack showed spalling on the western face where the Hudson River wind had been driving rain into the brick. We repointed the exposed masonry, installed a DuraFlex 316L liner in the center unit’s oversized terracotta flue, and flashed the rebuilt crown with Copperfield copper. The backdraft resolved because each flue now vents independently through a properly sized liner. That’s the kind of fix that does not show up on a quote from a company that never looks past the firebox.
Pricing for Chimney Repair in Yonkers, NY
The nature of Yonkers’s housing, old masonry attached to older heating systems, means repair costs here run a bit higher than in the surrounding towns. That’s not a sales line. It’s what shared stacks and 100-year-old brick cost to fix correctly.
- Mortar repointing on a typical Yonkers two-story chimney runs $850 to $1,650, depending on access and the amount of joint repair needed.
- Spalling brick repair, including brick replacement and a few new units, usually lands between $1,200 and $2,400. Full face rebuilds can run higher.
- Chimney waterproofing after full repointing typically costs $400 to $800 for an average two-flue stack.
- Flashing repair, including copper flashing from Copperfield, ranges from $700 to $1,500 depending on roof pitch and how much old flashing needs to come out.
- Flue liner installation or relining in Yonkers, where work often requires scaffolding and navigating a shared stack, runs $2,800 to $5,500. The liner material and size, plus the condition of the existing crown and chase, drive the cost.
We give you a written price before work starts, always. No exceptions. And if you already have a written quote from another company, bring it to us. We’ll give you a free second opinion on it. Call (914) 350-5204 and we’ll schedule a camera-scan inspection and get you a written number. Not a range over the phone. A number.
We Also Serve Cities Near Yonkers

Our crews regularly work throughout Yonkers and the surrounding area. We handle Chimney Repair in Mount Vernon, Eastchester, New Rochelle, and Ardsley, with the same camera-documented inspection and written price on every job. If you’re on the border and wondering which service area you fall into, call us. We’ll sort it out.
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

The telltale signs are poor draft when the boiler first fires, a strong odor near the appliance, or a flue that has visible condensation or flaking clay inside. If your home converted from oil to gas and the flue was never relined, it’s almost certainly oversized for the new appliance. A camera scan confirms it in minutes. We document the entire flue and you see the photos. That’s the only way to know for sure. Call (914) 350-5204 for an inspection with a written report.
Yes. In Yonkers’s attached rowhouse blocks, a single exterior chimney stack often serves multiple units. If a neighbor replaces a boiler without relining their flue, exhaust can backdraft into adjacent flues in the same stack. This is not rare. We have repaired exactly this condition on the rowhouse blocks off South Broadway. The fix is relining the affected flue to the correct size, and sometimes rebuilding the shared crown to separate the flue terminations properly. If you suspect this is happening, call us. Carbon monoxide concerns are not something to check twice.
The Hudson River wind drives rain horizontally into west-facing brick from the Palisade side of Yonkers across through Ludlow, Glenwood, and beyond. Combined with the city’s elevation change, those exposures get more moisture, more freeze-thaw cycles, and faster mortar joint erosion. We’ve seen west faces with completely failed joints while the east face of the same chimney is still sound. That’s why we always inspect all four faces and quote accordingly.
Rebuilding a shared crown on a rowhouse means removing the old crown, inspecting each flue individually, forming and pouring a new crown with proper overhang and a drip edge, and flashing it to the shared stack. Often the flues themselves need separation at the top to prevent one unit’s exhaust from entering another’s flue. It’s multi-flue work requiring roof access from two or more attached units. That’s why a shared crown rebuild in Yonkers costs more than a single-family crown replacement. You’ll get a written price and a written warranty before we start, per Clause 1 of the Haven Standard.
In most cases, yes. Yonkers requires permits for structural masonry work, and a full chimney rebuild almost always qualifies. This is part of why we handle the permit process as part of the job. Repointing and liner work typically don’t require permits, but a full rebuild does. We’ll confirm the requirements for your specific block and building type before quoting. If you have questions, call (914) 350-5204 and we’ll tell you what applies to your situation.
Written by Corrine Halstead, Owner at Level Two Chimney White Plains, serving Yonkers and surrounding Westchester communities.





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