Masonry repair
Sweep & inspection
Caps & crowns
Flue relining
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.
DuraFlex Fireplace Repair in Marietta: What to Know First
DuraFlex fireplace repair in Marietta typically runs between $185 and $640 for most jobs, and we complete the majority of those repairs in a single visit. That’s the honest window: a bad thermocouple isn’t a $1,900 liner replacement, and we’ll show you the difference on camera before you spend a dime. This page is for homeowners in Marietta whose DuraFlex fireplace or liner has started acting up and who want a straight answer about what’s wrong, what it costs, and whether it can wait. Call (478) 796-8742 and you’ll get a live person, not a voicemail tree.
We’re an independent DuraFlex service provider. That matters because we don’t have a manufacturer’s quota to hit or a warranty department to protect. We have a job to do: figure out what failed, tell you the price first, and put the fix in writing.
How DuraFlex Products Fail – and How We Fix Them
DuraFlex builds a solid stainless liner, but like every brand in the trade, the parts that fail in Marietta homes follow patterns. Here’s what we actually see:
- DuraFlex 304/316 alloy liner seam separation at the firebox transition. The liner takes the most thermal abuse right where it meets the firebox, and in older Marietta homes with original masonry fireplaces, we regularly find the seam has pulled apart after years of heating and cooling cycles. The symptom is usually a faint metallic smell or visible smoke staining at the damper. Fix: we pull the liner section, inspect the full run with a camera, and replace the failed segment with OEM-pattern material rather than a mismatched aftermarket splice.
- DuraFlex Pro Series flex liner kinking behind the damper plate. This one shows up in fireplaces that were converted from wood to gas. The liner gets forced around a damper frame it was never sized for, and a kink creates a flow restriction. The tell is a lazy, yellow flame and soot buildup on the glass doors even after a cleaning. Fix: we re-route and properly support the liner run, then verify draft with a smoke test before we call it done.
- DuraFlex Duralok connector joints coming loose at the appliance collar. We see this most often on gas inserts where the venting runs through an existing chimney. The connector loosens from vibration and thermal expansion, and combustion gases leak into the fireplace cavity instead of venting outside. Symptom: a gas smell near the fireplace after the burner cycles off. Fix: we re-seat the connection using high-temperature sealant rated for stainless-to-stainless joints, then run a combustion analysis and pressure test.
- DuraFlex liner insulation blanket degradation in high-heat exposure zones. The ceramic insulation blanket breaks down over time, especially in chimneys that see long burn seasons, which Marietta absolutely has. The symptom is heat transfer to the surrounding masonry and, in some cases, creosote formation higher in the flue than normal. Fix: we replace the insulation wrap and verify clearances with an inspection camera before re-firing.
- DuraFlex connector plate corrosion at the rain cap. The top plate takes every storm, humidity spike, and freeze-thaw cycle north Georgia throws at it. We see rust-through on plates that are ten or twelve years old, especially on homes near Kennesaw Mountain where elevation and wind-driven rain accelerate it. The symptom is water staining on the firebox floor after heavy rain. Fix: we replace the plate and cap assembly, and we always check the flue interior below for water damage while we’re up there.
The point isn’t that DuraFlex is a bad product. It’s a good one, and we install it when a chimney needs a new liner. The point is that everything with fire and exhaust eventually needs an honest look, and the failure modes above are the ones we’ve learned to check first in Marietta.
Styles & brands we work with





Our DuraFlex Fireplace Repair Process
Here’s how a DuraFlex repair works when you call Ashby Chimney Marietta:
- 1
You call, a person answers. That’s not a slogan. Our phones are staffed around the clock. We’ll schedule a window and show up when we say we will.
- 2
We diagnose with the fireplace off and the tools out. Gas off, power disconnected if it’s an insert, then we inspect the burner, pilot assembly, liner connection, damper, and firebox. Every DuraFlex job gets a camera run through the venting before we recommend anything.
- 3
We show you what we found and give you a written price. Nathan Corliss has a rule he’s held for going on twenty-two years: “Tell you the price first, show you the work, put it in writing – that’s the whole job.” You’ll see the camera footage yourself. If it’s a $210 thermopile, that’s the quote. If it’s a ol,400 liner section, you’ll see why on the screen before you approve it.
- 4
We make the repair with parts that fit. For DuraFlex work, that means OEM-pattern components matched to the existing liner alloy and diameter. We carry DuraFlex restoration materials, and we also stock HeatShield and Gelco products when a repair calls for a different approach. No “whatever’s in the van” fixes.
- 5
We test the system the way it will actually run. Gas pressure check, draft verification, combustion analysis, and a visual flame test. We don’t leave until the fireplace lights and vents correctly.
- 6
You get the guarantee in writing. Every repair comes with our written guarantee and the 365-Day Done Right Promise. If it fails inside the guarantee period, we return at no charge and make it right. No fine print, no phone tag.
See the difference
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After
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After
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AfterWhat DuraFlex Fireplace Repair Costs in Marietta
Most DuraFlex fireplace repairs in Marietta fall into these ranges, based on what we’ve actually billed in the last year:
- Pilot assembly or thermopile replacement: $185 – $330
- Gas valve replacement on a DuraFlex-vented fireplace: $410 – $640
- Firebox liner panel repair or replacement: $350 – $780
- Liner connector joint re-seal with camera inspection included: $275 – $420
- Full DuraFlex liner inspection with camera report and written condition assessment: $195 – $285
What moves the price is access. A fireplace on an interior wall with a straight chimney run is faster and cheaper than a second-story exterior chase with a steep roof. Parts availability also matters: OEM-pattern DuraFlex components are usually in stock at our suppliers in metro Atlanta, but a specific liner diameter can add a day or two. Every quote is written before we touch a tool, and the invoice matches the quote. Call (478) 796-8742 for the exact number on your fireplace – estimates are free.
Why Marietta Homeowners Call Ashby Chimney Marietta for DuraFlex Work
We’ve been at this since 2002, and Nathan Corliss, who runs Ashby Chimney Marietta, picked up his trade fundamentals at Los Angeles Trade-Technical College before chimney work pulled him into a career he’s stuck with for going on twenty-two years. He and the crew have worked a wide stretch of metro Atlanta, including plenty of fireplaces in the older homes near Kennesaw Mountain where the flues are original and the tolerances are tight. He’s known for showing up on time, quoting a flat price before he touches a brush, and putting everything in writing so there are no surprises when the invoice lands.
We also understand that a DuraFlex liner isn’t always the right call. Sometimes a HeatShield resurfacing does the job for less. Sometimes a Gelco patch is the smarter move on a minor firebox crack. We’ll tell you when that’s true, because our job isn’t to sell a liner; it’s to make the fireplace safe and functional. Every visit is done by a background-checked, uniformed technician. Every repair carries a written guarantee. Every phone call is answered by a person. That’s the whole arrangement, and it’s why homeowners who’ve been burned by no-shows and price-switchers call us when the fireplace stops acting right.
FAQs
We repair DuraFlex products as an independent service provider, which means we don’t file warranty claims on your behalf, but we can document the failure with camera footage and a written condition report you can submit to the manufacturer. If the repair is covered, you get reimbursed. If it isn’t, you’ll know what the real fix costs before you commit to it.
Yes, when the damage is localized. Seam separation at a joint, a kinked section behind the damper, or a failed connector plate can often be repaired section by section. We’ll show you the camera footage and tell you honestly whether a partial repair is safe and code-compliant or whether the liner has reached the end of its service life. The deciding factor is always whether the repaired liner can vent safely for the long term, not what’s easier or cheaper.
Most repair visits are scheduled within a few days to a week, depending on the season. Fall and early winter fill up fastest in Marietta because that’s when people light their fireplaces for the first time and discover a problem. If you smell gas or see smoke backing into the room, tell the person on the phone and we’ll prioritize your visit. Call (478) 796-8742 to get on the schedule.
It depends on what failed. A thermopile, pilot assembly, gas valve, or damper issue is usually a worthwhile repair, and most DuraFlex fireplaces have plenty of life left after the fix. The exception is when the liner itself has corrosion, seam failure in multiple locations, or damage from a chimney fire. In that case, we’ll show you the camera evidence and give you repair and replacement prices side by side, so you can decide with your eyes, not a sales pitch.
If a covered repair fails inside the guarantee period, we return and fix it at no charge. That’s the 365-Day Done Right Promise, and it’s written on every job we complete. You don’t chase us for it. You call, we schedule, we come back. That’s the whole arrangement.
If your DuraFlex fireplace is acting up in Marietta, call (478) 796-8742. You’ll get a live person, a straight answer, and a written price before any work begins. No show games, no phone tag, no number that changes at the door.
Written by Nathan Corliss, Owner, Ashby Chimney Marietta at Ashby Chimney Marietta, serving Marietta and nearby areas.