Masonry repair
Sweep & inspection
Caps & crownsLevel 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.
DuraFlex Chimney Repair in Yonkers: What to Know First
Hadley Chimney Yonkers provides independent DuraFlex chimney repair in Yonkers, typically completing most liner and component work within one to two weeks of your initial call, depending on parts availability. Repairs on DuraFlex systems in our area generally run from $400 for a minor component fix to $3,800 for a full liner replacement. We are not affiliated with or authorized by DuraFlex; we repair their systems as an independent DuraFlex service provider.
This page is for homeowners in Yonkers whose DuraFlex chimney liner or connected components are showing signs of trouble: recurring downdrafts, visible rust, water in the firebox, or a sweep that turned up liner damage. If that sounds like you, call (914) 233-3156 and we will schedule a camera inspection with a written estimate before any work starts.
How DuraFlex Products Fail – and How We Fix Them
DuraFlex builds aluminum and stainless steel flexible chimney liners, and they are a solid product line when installed correctly. But in Yonkers, where freeze-thaw cycles hit masonry hard and older chimneys were rarely built with a liner in mind, we see specific failure patterns. Here are the five we run into most often.
- Corrosion at the tee connection. DuraFlex Pro stainless liners hold up well, but the tee body at the base of the flue is where condensation and acidic creosote collect. We regularly see pinhole rust developing there after eight to twelve years, especially on oil-fired systems. The fix is usually a new tee assembly rather than a whole liner, and we will only tell you that after a camera inspection shows the rest of the liner is sound.
- Kinked or crushed liner sections. The DuraFlex 304 alloy liner is flexible by design, but a sharp bend during installation or a settling chimney crown can create a kink that restricts draft and collects creosote. In homes near the Greystone area, we have pulled liners that looked fine from the top but were nearly closed off twenty feet down. We fix this by replacing the damaged section and checking the crown for movement that caused it.
- Liner separation at the connector. DuraFlex connectors are designed to snap together, but repeated thermal expansion can work them loose over years of heating and cooling cycles. When that happens, exhaust gases leak into the chimney cavity instead of venting outside. We reseat and secure the connection, then run a pressure test to confirm the liner is sealed end to end.
- Damaged rain caps and termination kits. The DuraFlex termination cap takes the brunt of Yonkers weather: snow, ice, wind, and the occasional determined squirrel. We see bent caps and corroded spark arrestors frequently. The cap is replaceable without touching the liner itself, which keeps the repair under $400 in most cases.
- Improper liner sizing from the original install. This is the one that makes us shake our heads. A liner that is too small for the appliance creates excess draft and heat, shortening liner life and increasing creosote buildup. A liner that is too large cools flue gases too fast, causing condensation and corrosion. We measure, we verify against the appliance BTU output, and if the original install was wrong, we tell you plainly and give you a quote for a correctly sized replacement.
Styles & brands we work with



Our DuraFlex Chimney Repair Process
Here is what happens when you call us for DuraFlex work in Yonkers, from first call to final photo.
- 1
You call (914) 233-3156. A live person answers, takes your details, and books a window that works for you. No voicemail loop, no callback queue.
- 2
We show up in a tracked window. You get a live arrival time before our technician pulls up. Our techs are background-checked, uniformed, and they will show ID.
- 3
Camera inspection first. Before we recommend anything, we run a camera up the flue and show you what we see on the spot. You will get photos sent to your phone. No repair is recommended without visual evidence you can look at yourself.
- 4
Written estimate before any work starts. We tell you exactly what the parts cost, what the labor costs, and what the total is. That number does not change once someone is on the roof.
- 5
The repair, done with the right parts. We use genuine DuraFlex components when available, and when a quality aftermarket part is the better value for a specific repair, we say so and explain the trade-off before we order anything. You approve the parts first.
- 6
Testing, photos, and the guarantee. After the repair, we test the draft, take before-and-after photos, and send you a digital invoice you can pay from a link. Every repair carries our written 365-Day Done Right Promise: if it is not done right, we make it right, including a free second visit if the repair fails.
See the difference
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After
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AfterWhat DuraFlex Chimney Repair Costs in Yonkers
Chimney repair pricing in Yonkers depends on what the camera finds, but here are realistic ranges for the DuraFlex jobs we do most often.
- Tee replacement: $400 – $750
- Rain cap or termination kit replacement: $250 – $500
- Connector reseal and pressure test: $350 – $650
- Sectional liner patch (single damaged section): $600 – $1,100
- Full DuraFlex liner replacement (materials and labor): $2,400 – $3,800
What moves the price: flue height, roof access difficulty, whether the existing liner was sized wrong and needs a different diameter, and whether surrounding masonry needs repointing before the liner can be properly secured. Call (914) 233-3156 for a free estimate. We will give you a written number before anyone touches a tool.
Why Yonkers Homeowners Call Hadley Chimney Yonkers for DuraFlex Work
We have been doing chimney work since 2003, and we operate under The Relay Visibility Guarantee as part of the Relay Home Co. family. That means live arrival tracking, before-and-after photo documentation, and a written price before work begins, on every single job.
Our techs know DuraFlex systems because we see them constantly in Yonkers homes. When a DuraFlex liner is beyond repair, we also work with HeatShield ceramic repair compound and Gelco chimney products, so we are not locked into a single brand recommendation. We will tell you honestly whether your DuraFlex liner has years left, needs a targeted repair, or has reached the point where replacement makes more sense than continued patches.
Every repair comes with a written guarantee and a free second visit if the repair fails. That is not a promotional offer. It is the way we have done business since day one.
FAQs
It can, depending on the repair and whether the components used are OEM. We use genuine DuraFlex parts where available, and when a quality aftermarket part is the better value, we tell you before ordering and explain any warranty implications. Most DuraFlex liner warranties cover manufacturing defects, not installation-related damage, which is what we see most often in Yonkers.
Most common DuraFlex components, like tees, caps, and connectors, are in stock with our regional suppliers and arrive within three to five business days. Full liner kits in less common diameters can take seven to ten days. When we quote your repair, we include the parts timeline so you know exactly when the job will be finished. Call (914) 233-3156 for a current estimate.
Repair makes sense when the camera inspection shows localized damage (a corroded tee, a single damaged section) and the rest of the liner is structurally sound with adequate thickness. Replacement makes sense when there are multiple failure points, visible thinning across long stretches, or the original liner was sized incorrectly. We show you the camera footage and let you make the call with real information, not a pressured sales pitch.
A damaged liner lets exhaust gases, including carbon monoxide, into the chimney cavity or the home. It also accelerates creosote buildup, which raises the chimney fire risk. Liner damage does not fix itself, and the repair gets more expensive the longer it waits, especially after a Yonkers winter freeze-thaw cycle works the opening wider. If you suspect a problem, call (914) 233-3156 and we will inspect it before it gets worse.
Yes. As an independent DuraFlex service provider, we repair systems regardless of who did the original installation. We have taken over maintenance and repair for dozens of Yonkers chimneys that were originally lined by other companies. We assess the current condition, fix what needs fixing, and document everything with photos.
Written by Cory Mitchell, Owner, Hadley Chimney Yonkers at Hadley Chimney Yonkers, serving Yonkers and nearby areas.