Flue relining
Sweep & inspection
Caps & crowns
Masonry repair
Gas fireplace serviceLevel 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.
Copperfield Flue Liner Replacement: The New York Owner’s Guide
If you have a Copperfield chimney system and the flue liner has failed, we stock Copperfield-compatible replacement liners and install them across New York, NY, typically at a flat quoted price between $2,800 and $5,600 depending on flue height, liner diameter, and access. Most Copperfield liner replacements in the city run to the higher end because rooftops, parapets, and brownstone chimney stacks add labor and rigging that a suburban ranch never will. You’ll know the liner failed because your sweep flagged it on camera, the CO detector near the fireplace started tripping, or you saw flakes of terra-cotta or stainless steel accumulating in the firebox.
Ashby Chimney New York is an independent chimney service, not affiliated with Copperfield. We install Copperfield parts and equivalent components because we’ve seen which liners hold up in New York weather and which ones don’t.
Which Copperfield Models This Applies To
Copperfield makes a few distinct liner lines, and the replacement path depends on which one you have. The two we see most often in New York are the Copperfield 316L stainless steel flexible liners (sold in diameters from 4″ to 8″, with 6″ being the most common for a typical single-flue fireplace) and the Copperfield rigid terra-cotta replica liners used in vintage masonry chimneys. The 316L flex liners get specified by appliance type: the 4″ and 5″ sizes usually serve gas inserts and small wood stoves, while 6″ and up handle open fireplaces and larger stoves.
Here’s the gotcha: a Copperfield liner’s age matters more than its label. Copperfield changed their corrugation profile and alloy spec around 2015, and older pre-2015 flex liners don’t always mate cleanly with the current Copperfield top plates and connector kits. If your liner predates the change, you might save money by replacing the whole assembly rather than buying parts that only half-fit. OEM Copperfield parts are solid, but we also install equivalent 316Ti and 316L liner from DuraFlex and HeatShield when the Copperfield part isn’t available or the added titanium would actually help. The call we make depends on your fuel type and how aggressive your New York chimney crown and cap have let the moisture in.
To identify your part, look for the metal label plate riveted to the liner’s top section, or the stamp printed along the liner body near the appliance connector. If the label is burned off or illegible, we measure the inner diameter with a caliper and note the corrugation spacing. Those two facts tell us almost everything.
Styles & brands we work with





Signs Your Copperfield Flue Liner Replacement Is Failing
- Flakes of metal or clay in the firebox. If you find what looks like dark, brittle chips under the grate, the liner’s internal surface is spalling. On stainless liners, this shows up as rust scale; on clay, it’s the flaking face of a liner that’s been heated and cooled too many times.
- A CO detector that trips only during fires. This means combustion gases are not drafting the way they should. A cracked liner changes flue pressure and lets exhaust pool or backdraft. Treat this as a warning that the liner is compromised, not that the detector is broken.
- Visible rust streaks or dark tar staining on the exterior brick near the flue. In New York, brick chimneys absorb rain and freeze-thaw cycles. A liner that’s cracked lets flue gases condense behind the brick, and the staining works its way outward over a season or two.
- The smell of smoke inside the house hours after the fire is out. Cold air sitting in a cracked flue pushes the old smoke smell back down. It’s sharp and acrid, distinct from fresh smoke. That is a leak, not normal chimney odor.
- A chimney sweep’s camera finds a gap, split, or separation. This is the most common way New York owners learn they need a replacement. A good camera inspection will show exactly where the liner failed and whether the flue tiles behind it shifted.
Replacement Cost & What’s Included
In New York, a Copperfield-compatible flue liner replacement typically runs between $2,800 and $5,600 installed. That range covers removing the old liner, inspecting the flue cavity, installing the new liner with an insulated wrap where the fire code requires it, and securing the top plate and rain cap. Taller chimneys, difficult roof access, or a flue that’s too tight for a straight drop will push the price toward the top of that range. The liner material itself is usually 40 to 55 percent of the job; the rest is labor, rigging, and proper termination hardware.
We give every New York customer a written price before any work starts, and the invoice matches that number. No add-ons after we’re on the roof. The Kingswell Guarantee covers the repair for a full year after installation. If the liner fails inside that period, we return at no charge. Nathan Corliss runs every Ashby Chimney New York job this way: say the price first, put the findings in writing, and let the work speak for itself.
See the difference
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AfterDIY or Call Us?
You can safely do two things yourself in New York: check the firebox for flaking liner material, and run a visual inspection of what’s visible at the flue top with binoculars from the ground. That’s it. Do not go on the roof to inspect a flue liner, and do not try to drop a liner down a chimney from the rooftop. New York roofs with their pitch, parapet walls, and wet slate are genuinely dangerous without proper fall protection, and a liner that binds halfway down a flue is one of the most frustrating things to extract yourself.
The riskier part is what you can’t see: a liner that’s partially separated still looks fine from the top, but it’s venting into the chimney cavity. That’s how a chimney fire starts in spaces you can’t reach with an extinguisher. If you suspect the liner is compromised, call us at (315) 644-2982. We’ll camera it, show you the footage, and give you a written number.
FAQs
A 316L stainless liner in New York usually lasts 15 to 25 years on a wood-burning flue, less if the chimney cap is missing or the flue has been soaked by repeated rain and freeze-thaw. Gas liners last longer because the exhaust is cooler and less corrosive.
Small pinholes in a liner can sometimes be corrected with a resurfacing product like HeatShield, but a split or separated seam in a Copperfield liner means full replacement. We won’t recommend a patch on a liner that’s failing structurally; it gives out again and you pay twice.
Most New York replacements take one full day, including setup, removal, installation, and cleanup. Taller or harder-access chimneys might run into a second morning for roof work, but we’ll tell you the timeline when we quote it.
We keep 4″, 5″, and 6″ Copperfield-compatible liner sections, top plates, and connectors on the truck, along with equivalent DuraFlex and HeatShield components. For 7″ or 8″ flues we order ahead, usually two to three days in New York. If you call with your current liner’s measurements, we’ll tell you before we arrive whether we have what you need.
Get a Written Price for Your Copperfield Flue Liner Replacement in New York
If you’re in New York, NY and think your Copperfield liner has failed, call (315) 644-2982. We’ll set an appointment, run a camera inspection, and hand you a written quote before any work begins. No pressure, no price-switching at the door, just the straight number and the work behind it.
Written by Nathan Corliss, Owner, Ashby Chimney New York, serving New York and nearby areas.