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.
Olympia Chimney Flue Liner Replacement: The Dallas Owner’s Guide
We stock and install Olympia Chimney-compatible flue liner replacement in Dallas, with most jobs running $2,800-$4,500 installed depending on height, diameter, and whether the chase needs rework. In Lakewood and Lake Highlands, where we’ve done dozens of these, we typically have the right diameter on the truck and can book the install within a week. Most homeowners figure out their liner is shot after a Level 2 inspection turns up cracked clay tiles, flaking stainless, or gaps at the collar that the camera catches plain as day.
Which Olympia Chimney Models This Applies To
Olympia Chimney builds UL-listed stainless steel liners in 316Ti and AL29-4C alloys, and the replacement has to match both the fuel type and the appliance collar. The 316Ti handles wood and standard gas; AL29-4C is required for high-efficiency gas and oil condensing appliances. We’ve replaced liners in Olympia’s smooth-wall flex series and their rigid sectional lines, and the gotcha is usually the collar connection at the top: Olympia uses a proprietary twist-lock on some flex runs that doesn’t mate cleanly with generic adapters.
Check the data plate on your existing liner, usually stamped near the top termination or on a tag left from original install. You’ll need the nominal diameter (5″, 6″, 7″, or 8″ are common in Dallas builds), the total linear feet, and whether it’s smooth-wall or corrugated. If the tag’s gone, we measure with a drop tape during the camera scan. Aftermarket equivalents from DuraFlex and Gelco meet the same UL 1777 standard and often save $400-$600 on material, but the collar adapter has to be checked for fit. We source through our Haven buying network to keep that price gap honest, not hidden.
Signs Your Olympia Chimney Flue Liner Replacement Is Failing

- White or orange staining on exterior brick. That’s flue gas condensate leaking through cracked clay tiles or corroded stainless seams. In Dallas, where temperature swings from 40°F nights to 75°F days are normal January weather, the expansion cycling accelerates fatigue at the liner joints.
- Bits of clay or metal flake in the firebox. Spalled terracotta or delaminating stainless drops down the flue. We see this most in Preston Hollow homes with original 1960s-1980s clay liners that were never meant for modern gas insert temperatures.
- Smoke or CO detector alerts during fireplace use. A compromised liner can leak combustion gases into wall cavities or the living space. This is not a “wait and see” situation; if your detector’s chirping during a fire, stop using it and call for a camera inspection.
- Draft problems: smoke rolling out the front, hard starts, or downdrafts. Liner damage changes the flue’s cross-section and smoothness, killing the stack effect. Corrine Halstead and our crew see this out in Lake Highlands on homes where the original liner was sized for an open hearth, not the gas log set that got dropped in later.
- Your sweep flags “gaps at the liner collar” or “visible daylight through flue wall.” These are direct camera findings. We show you the footage. No interpretation needed.
Before
AfterReplacement Cost & What’s Included
| Scope | Typical Range in Dallas |
|---|---|
| Olympia-compatible flex liner, 6″ × 25 ft, 316Ti | $2,800-$3,400 |
| Olympia-compatible flex liner, 6″ × 25 ft, AL29-4C | $3,200-$3,900 |
| Rigid sectional replacement with chase rework | $3,800-$4,500+ |
| Collar adapter / top plate replacement only | $480-$720 |
What drives the range: height of the chase (two-story Dallas Tudor vs. single-story ranch), whether we need to remove an existing insert to pull the old liner, and if the top plate or rain cap is rotted out too. Every quote is itemized in writing before we start - Haven Standard Clause 1. The 365-Day Done Right Promise covers the install, and we register the liner warranty with the manufacturer so you’re not holding a receipt you can’t find in 2027.
DIY or Call Us?

There’s no safe DIY path for flue liner replacement. You’re working at roof height, often on a 6/12 or steeper Dallas pitch, with a liner that has to be pulled without damaging the surrounding masonry or insulation. The old liner may be creosote-heavy. The new one has to be sized to NFPA 211 tables, not guessed. And if the collar seal fails, you’re routing carbon monoxide into a wall cavity you can’t see.
What you can check yourself: look up the flue from the firebox with a flashlight for obvious gaps, check the exterior chase for staining, and confirm your CO detector is under 7 years old. Everything else - measurement, pull, install, smoke test - needs a trained tech with a harness and a camera. Call (972) 284-1392 and we’ll book a Level 2 inspection. Camera goes in first. Everything else follows.
FAQs
A 316Ti stainless liner in regular wood-burning service typically lasts 15-25 years, but Dallas’s combination of humid summers, occasional ice, and hard water mineral content in condensate can pit the lower sections faster than drier climates. AL29-4C in gas service often sees 20+ years if the appliance is tuned right. Call (972) 284-1392 for an exact condition read - estimates are free.
Minor gaps at the top collar or small localized corrosion spots can sometimes be addressed with a HeatShield cerfractory seal or a partial stainless sleeve, but only if the camera shows the rest of the liner wall is sound. If the damage runs more than a few feet, or if there are multiple cracks or thinning spots, replacement is the only fix that meets NFPA 211. We show you the footage and explain which category you’re in before quoting either path.
Most residential pulls and installs are one day, start to finish: arrival, setup, camera confirmation of the scope, pull old liner, install new, top plate and cap, smoke test, photo documentation. Clause 4 of the Haven Standard requires that photo record on every job. Complex chases or insert removals may run into a second day; we tell you that in the written quote, not as a surprise at 5 p.m.
We keep 316Ti and AL29-4C flex in 5″, 6″, 7″, and 8″ diameters on our trucks, along with DuraFlex and Gelco equivalents sourced through our Haven buying network. Rigid sectional Olympia Chimney replacement usually orders in within 3-5 business days. We don’t start the clock on your job until material is in hand and your written quote is signed.
Level Two Chimney Dallas is an independent service provider and is not affiliated with Olympia Chimney. We install Olympia Chimney-compatible liners and equivalents from DuraFlex, HeatShield, and Gelco under the Haven Standard.
Written by Corrine Halstead, Owner, Level Two Chimney Dallas at Level Two Chimney Dallas, serving Dallas and nearby areas.





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