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.
Before
After
Before
After
Before
AfterOlympia Chimney Flue Liner Replacement: The Waltham Owner’s Guide
We stock and install Olympia Chimney-compatible flue liner replacements in Waltham, with typical installed prices running $2,800-$4,200 for a standard single-flue stainless steel job. Most Olympia Chimney liner replacements we book are completed in one day, and we carry common diameters on our trucks. Homeowners usually discover the problem after a Level 2 inspection turns up cracked terracotta, flaking glaze, or a liner that’s pulled away from the top collar - sometimes after a chimney fire they didn’t know they’d had.
Which Olympia Chimney Models This Applies To
Olympia Chimney manufactures flexible stainless steel liners in 316Ti and AL29-4C alloys, typically sold in diameters from 3 to 10 inches for wood, pellet, and gas applications. The critical match points are the alloy grade (316Ti for wood, AL29-4C for high-efficiency gas), the inner diameter, and the collar style at the top - either a standard top plate or a proprietary Olympia Chimney locking band that mates to their own termination caps.
To identify your liner, check the stamped band near the top termination or the data plate on the original installation paperwork. If you’re in a Waltham home built between 1960 and 1990 near Prospect Hill or the Charles River basin, there’s a decent chance your original terracotta liner was retrofitted with an Olympia Chimney flexible liner in the 2000s or 2010s. Those retrofits are reaching their 15-20 year service window now.
We source OEM Olympia Chimney liner and compatible equivalents through our Haven buying network. For most Waltham replacements, we match the alloy grade exactly and use an Olympia Chimney top plate or a verified cross-reference from Gelco or Famco when the original termination is discontinued.
Signs Your Olympia Chimney Flue Liner Replacement Is Failing
- White or tan residue on the exterior masonry. This is efflorescence from moisture getting past a cracked liner, and in Waltham’s freeze-thaw cycle it accelerates spalling on the back side of the brick. We see this most often on homes near the Mystic River where humidity stays high through October.
- Bits of clay or glazed tile in the firebox. Those fragments came from your terracotta liner, which means the flexible steel liner either wasn’t installed during a previous retrofit or has shifted and exposed the original clay. Either way, combustion gases are hitting material that isn’t rated for direct flame impingement.
- A strong smoke smell on upper floors when the fireplace is cold. This usually means a liner joint has separated or corroded through, allowing smoke to leak into the chase cavity. In split-levels common around Waltham’s South Side, that chase runs right past bedrooms.
- The draft reversed or sluggish even with a cold chimney and open damper. A liner that’s collapsed inward, kinked during a previous poor installation, or partially blocked by creosote buildup has lost its round profile. Oval or flattened sections kill draft efficiency.
- Your home inspector flagged “recommend Level 2 inspection” on the sale report. This is how about a third of our Olympia Chimney liner jobs start in Waltham. The inspector saw something - staining, a patched section, or a liner that didn’t look continuous - and punted to a specialist. We put the camera down and show you exactly what they suspected.
Before
AfterReplacement Cost & What’s Included
| Component | Waltham Price Range |
|---|---|
| Olympia Chimney-compatible liner (316Ti, standard single-flue) | $1,400 - $2,200 |
| AL29-4C alloy upgrade (high-efficiency gas appliances) | $1,800 - $2,600 |
| Labor: removal, installation, top plate/collar, insulation pack | $1,200 - $1,800 |
| NFPA 211 Level 2 inspection with camera scan | Included |
| Documented photo record and written warranty | Included |
| Typical total installed | $2,800 - $4,200 |
What drives the range: height of the flue (two-story Waltham colonials vs. one-story ranches), whether we need to remove a failed existing flexible liner first, and if the top crown needs cutting or rebuilding to seat the new termination properly. We deliver a written price before any work starts, Clause 1 of the Haven Standard, so the number you see is the number you pay. Every liner replacement carries our 365-Day Done Right Promise.
DIY or Call Us?
There’s exactly one thing a homeowner can safely check: shine a flashlight up the flue from the firebox and look for daylight at the top. If you don’t see a continuous round pipe, or if you see clay edges, gaps, or rust staining, stop there.
Everything else - pulling the old liner, sizing the replacement, packing insulation between liner and clay, and seating a top plate with proper storm collar and spark arrestor - requires working on a steep roof with full fall protection, handling sharp stainless edges, and verifying draft and clearance to combustibles per NFPA 211. A liner installed without proper insulation clearance or with an undersized diameter creates a chimney fire or carbon monoxide risk. We’ve re-done three Waltham DIY liner jobs in the last two years where the owner got the diameter right but missed the insulation pack, which voids the manufacturer’s warranty and the home insurance rider.
Call (781) 649-9326 and we’ll book a camera inspection. Corrine Halstead or one of our uniformed techs will show you what we found, put the written price in front of you, and schedule the replacement if you want to move forward.
FAQs
A properly installed 316Ti stainless liner typically lasts 15-25 years; AL29-4C runs 20-30 years. In Waltham, the shorter end of that range is more common if the liner wasn’t insulated during original installation, because condensation from our cold, wet shoulder seasons accelerates exterior corrosion where the liner contacts terracotta. Call (781) 649-9326 for an exact condition assessment - estimates are free.
Small gaps or minor corrosion at the top collar can sometimes be addressed with a stainless repair sleeve or a new termination plate. If the liner has multiple perforations, significant thinning, or joint separation below the smoke chamber, replacement is the only code-compliant fix. We don’t quote repairs that won’t last three years. Call (781) 649-9326 and we’ll show you the camera footage so you can see which category you’re in.
Most Olympia Chimney liner replacements we do in Waltham are completed in a single day, typically 4-6 hours of on-site work. Two-flue chimneys or jobs requiring crown reconstruction may run into a second day. We give you a written schedule with the price, so you know before we start.
We carry 316Ti and AL29-4C flexible liner in 5-, 6-, 7-, and 8-inch diameters, plus Olympia Chimney-compatible top plates and locking bands from our Haven network. Less common sizes (3-, 4-, 9-, 10-inch) we pull from our Boston-area distributor with next-day availability. If your liner has failed mid-season, we prioritize the job and coordinate delivery so we’re not waiting on parts.
Level Two Chimney Waltham is an independent service provider and is not affiliated with Olympia Chimney. We source parts through our Haven buying network to keep customer prices honest.
Written by Corrine Halstead, Owner, Level Two Chimney Waltham at Level Two Chimney Waltham, serving Waltham and nearby areas.