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 Cap & Crown Across Yonkers
Chimney cap and crown repair in Yonkers typically runs $340-$1,200 depending on whether you need a standard cap replacement, crown coating, or full crown rebuild on a shared multi-flue stack. Most jobs are completed in a single visit with no-hassle upfront pricing agreed before we start. If you’re in Dunwoodie, Ludlow, Fleetwood, or anywhere along the Hudson corridor, our crews are already working in Yonkers neighborhoods regularly, and we can usually schedule within a few days. Call (516) 927-2678 - a live person answers 24 hours a day.
We’ve been serving Yonkers homeowners for over 42 years, and we know these chimneys. The two- and three-family brick row houses that dominate south and central Yonkers, from the streets near Kinsley Park up through the hills of Greystone, carry masonry stacks built in the 1890s-1930s for coal furnaces. Those original multi-flue chimneys weren’t designed for modern gas and oil appliances, and their caps and crowns have been taking Hudson Valley freeze-thaw punishment for 80 to 130 years. We document every inspection with camera footage you can see, explain what we found in plain English, and back every job with our 90-Day Done Right Promise in writing.
Why Hearthstone Chimney Co. Is Yonkers’s Preferred Chimney Cap & Crown Company
Yonkers homeowners don’t call us for flashy trucks or discount coupons. They call because their neighbor did, or because they got tired of contractors who couldn’t explain why the work cost what it cost. We’ve built our reputation here one chimney at a time, and we plan to be answering the phone in Yonkers for decades to come.
Our technicians are background-checked, uniformed, and trained to treat your home like their own. They complete most cap and crown jobs in a single visit, and they carry professional-grade materials from brands like Olympia Chimney, Famco, and Copperfield so we’re not ordering parts that leave your flue open to weather. Dispatch and scheduling are coordinated from our New York City office, but our crews serve Yonkers locally and know the difference between a valley-floor flue near the Metro-North station and a hilltop stack in Dunwoodie Heights that takes the full brunt of northwest Hudson wind.
The 90-Day Done Right Promise governs everything we do. If it’s not right, we come back and make it right - in writing, no arguing, no paperwork chase. That’s the Keystone Standard, and it’s how we’ve operated since 1984.
Our Chimney Cap & Crown Services in Yonkers
Custom Cap Installation
Most Yonkers two- and three-family row houses need more than an off-the-shelf cap from a hardware store. The shared masonry stacks common in neighborhoods like Lowerre and Fleetwood often have irregular flue spacing, multiple flue sizes on one chimney, or exterior dimensions that don’t match standard catalogs. We measure on-site, fabricate or source custom caps from Copperfield and Famco to fit your exact stack, and install with proper clearances and mesh sizing. A custom cap on a Yonkers party-wall chimney isn’t a luxury - it’s the only way to keep water out of all flues without creating a new downdraft problem.

Cap Replacement
Caps rust, mesh corrodes, and animals pull at loose fittings. In Yonkers, where the Hudson River corridor funnels salt-laden winter air directly into the city, galvanized caps often fail faster than inland Westchester chimneys. We replace failed caps with stainless steel or copper options from Olympia Chimney and Copperfield, sized to your flue and your heating appliance’s draft requirements. If your old cap was the wrong size for a converted coal-era flue, we’ll tell you straight and show you the camera footage that proves it.

Crown Repair
This is where Yonkers’s housing stock tells its story. The flat or barely-sloped concrete crowns poured on 1890s-1930s brick chimneys were never meant to survive 80-plus years of freeze-thaw. Every winter, water seeps into hairline cracks, expands, and opens them wider. By spring, that crown is funneling water straight onto your clay tile liner, your smoke chamber, your damper. We rebuild crowns with proper slope and overhang, using professional-grade crown mix formulated for Hudson Valley temperature swings. On party-wall chimneys - standard in dense Yonkers neighborhoods - we inspect and document both sides of the shared stack before quoting any crown work.

Crown Coating
Not every cracked crown needs full replacement. If the structural concrete is sound and the cracking is surface-level, we apply a flexible crown coating from HeatShield that seals existing cracks and prevents new water intrusion. This is a straightforward, cost-effective option for Yonkers homeowners whose crowns are aging but not yet failed. We’ll show you the camera view of the crown top and tell you honestly whether coating will last or whether the freeze-thaw damage has gone too deep. No guesswork. No upsell.

Multi-Flue Cap
In south and central Yonkers, the default chimney isn’t a single flue on a detached house. It’s one exterior masonry stack with two or three flues serving separate units in a brick row house. A multi-flue cap covers the entire chimney top, protecting all flues with a single engineered structure that sheds water and blocks downdraft. We size multi-flue caps to the full exterior dimensions of your shared stack, not just the flue openings, and we verify clearances for each unit’s appliance type. If your neighbor’s flue is also compromised, our camera documentation gives both owners the evidence they need to coordinate repair.

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.
- 3
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 don’t use builder-grade substitutes, and we don’t make you wait three weeks for a part. Our trucks stock caps, crowns, and coating materials from Olympia Chimney, Famco, and Copperfield - brands that hold up to Hudson Valley weather and meet professional installation standards. For custom multi-flue caps on Yonkers party-wall chimneys, we work with fabricators who understand the irregular dimensions these older stacks present. The result is a cap or crown repair done once, done right, and backed by our 90-Day Done Right Promise.
Common Chimney Cap & Crown Problems We See in Yonkers Homes
- Flat crowns cracked by freeze-thaw. Yonkers’s 1890s-1930s brick chimneys were topped with concrete crowns poured nearly level. Hudson Valley winters open hairline cracks that become water highways straight into 80-130-year-old clay liners. We see this on nearly every inspection in Dunwoodie and Ludlow.
- Oversized flues running too cool. Coal-era flues converted to gas or oil without proper relining are mismatched to modern low-BTU appliances. They stay cooler, so first-degree creosote becomes second-degree glaze faster than on newer Westchester stock. A failing cap that lets rain in accelerates the problem.
- Wind-driven downdraft on hilltop chimneys. Chimneys in Dunwoodie Heights and Greystone sit 200 feet above the riverfront and take stronger northwest wind pressure than valley-floor flues. If the cap mesh is clogged or the crown is cracked, backdraft pushes flue gases and creosote odor straight back into the firebox.
- Shared-stack liability between neighbors. Party-wall masonry means one chimney structure often carries flues for two or more separately owned properties. A cracked liner or failed cap at one address can actively create carbon-monoxide risk next door. Cross-property documentation is standard practice on every call.
Pricing for Chimney Cap & Crown in Yonkers, NY
Here’s what cap and crown work costs in the Yonkers market, based on jobs we’ve completed from Fleetwood to Greystone:
| Service | Typical Range in Yonkers |
|---|---|
| Standard single-flue cap replacement | $340-$580 |
| Custom cap or multi-flue cap (fabricated to fit) | $620-$1,100 |
| Crown coating (surface cracks, sound concrete) | $480-$720 |
| Partial crown repair / rebuild | $780-$1,200 |
| Full crown removal and rebuild | $1,400-$2,400 |
What moves the number: accessibility (roof pitch, height, scaffolding needs), whether the chimney is freestanding or party-wall shared, and whether we find hidden liner damage once the crown is opened. We give you the full price before we start - the number on the estimate is the number on the invoice. Every estimate includes a Level-2 camera inspection with photos you can see. Call (516) 927-2678 for a free estimate.
We Also Serve Cities Near Yonkers
Our Chimney Cap & Crown in Yonkers crews also work regularly in Bronxville, Tuckahoe, Pelham, and New Rochelle. If you’re in one of these communities and your chimney shares the same 1890s-1940s brick construction common to the lower Hudson Valley, the same inspection and repair principles apply. We’re happy to schedule you from the same dispatch.
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 Cap & Crown in Yonkers
Yes, a multi-flue cap is the correct solution for most Yonkers two- and three-family row houses with shared masonry stacks. A single cap stretched across the full chimney top protects all flues from water and downdraft, and it’s engineered to the exterior dimensions of your stack rather than individual flue pipes. We measure on-site, fabricate to fit, and verify that each flue has proper clearance for its appliance type. Call (516) 927-2678 and we’ll inspect both flues with our camera so you and your neighbor see exactly what’s up there.
You know because you see the camera footage yourself, and because we explain what we’re showing you in plain English. A crown that needs repair has visible cracking, spalling, or pooling water on its surface - and the camera view from inside the flue often shows water streaks or rust on the damper below. If the concrete is sound and only surface-cracked, we’ll recommend crown coating and show you why. If the freeze-thaw damage has gone structural, we’ll show you that too. Nothing is quoted without photo evidence you can see. Call (516) 927-2678 for a free inspection.
Greystone and Dunwoodie Heights chimneys sit 200 feet above the Hudson River valley floor, and the northwest winter wind funnels straight into those flues with more force than valley locations experience. If your cap mesh is clogged with creosote or debris, or if the crown is cracked and disrupting proper draft, that wind pressure can overcome the flue’s natural upward draw. Sometimes the original cap was also the wrong design for your appliance type. We inspect with draft gauges and camera, identify whether the problem is cap design, crown condition, or flue sizing, and give you a fix that matches the actual cause. Call (516) 927-2678 for an exact diagnosis.
It changes everything. Coal-era flues are oversized for modern low-BTU gas and oil appliances, so they run cooler and wetter than designed. That means faster creosote buildup, more moisture condensation inside the flue, and greater damage to clay liners when water gets through a cracked crown or failed cap. The cap must be sized to shed water effectively without further restricting draft on an already-marginal system, and the crown must be rebuilt with proper slope to keep water out of that vulnerable liner. We see this exact configuration weekly in Ludlow, Fleetwood, and Lowerre, and we know which cap designs work for converted coal flues and which make the problem worse. Call (516) 927-2678 for a camera inspection and plain-English verdict.
Yes. NFPA 211, the National Fire Protection Association standard adopted throughout Westchester County, requires annual inspection of all chimney and venting systems regardless of use frequency. In Yonkers’s dense row-house neighborhoods, this matters especially because your flue may be shared with a neighbor’s heating appliance that runs all winter while yours sits idle - and a crack or cap failure on the shared stack affects both units. Our Level-2 camera inspection documents condition whether you burned last season or not, and the photos give you proof of compliance for insurance or resale. Call (516) 927-2678 to schedule - estimates are free.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Yonkers and the lower Hudson Valley since 1984.





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