The liner is the part of the chimney you never lay eyes on and the part that most directly keeps your household safe, because it is what holds the heat and the combustion gases inside the flue as they climb and keeps them away from the surrounding masonry and framing. When a clay liner cracks, or a flue is unlined or the wrong size, that protection is gone and the chimney can no longer vent safely. RedLeaf Chimney Crew relines chimneys across Chicago's North Side, IL, sizing a new stainless or otherwise appropriate liner to your specific fireplace, wood stove, or gas appliance, so a flue that was no longer safe to use becomes one you can light with confidence again.
- Failing or cracked clay liners replaced
- Stainless liner sized to the fireplace, stove, or gas appliance
- Unlined and oversized flues brought to a safe standard
- Insulated where the application calls for it
- Draft and venting confirmed after the reline
- Camera-documented before and after
What the liner does, and how a North Side flue loses it
Every chimney that vents a fire needs a liner, and on most older North Side homes that liner is a column of clay tiles running the length of the flue. Its job is to contain the heat and the byproducts of combustion, carbon monoxide among them, and keep them traveling up and out rather than seeping into the masonry, the framing, or the rooms of the house. While the liner is sound, the chimney does this invisibly, year after year. When it fails, the failure is just as invisible, and that is what makes it dangerous. A cracked or gapped liner can let combustion gases reach the framing or the living space with no obvious sign until a camera goes up the flue or a carbon monoxide alarm goes off.
Clay liners give out in a few predictable ways up here. The intense heat of a flue fire can crack tiles outright, sometimes the whole stack at once. The freeze-and-thaw cycling that attacks the rest of the chimney works on the liner too, especially once water is getting in past a cracked crown or a missing cap. And a great many older homes simply have flues that were never lined, or were lined for an appliance that has since been replaced. That last one comes up constantly on the North Side, where a wood-burning fireplace gets converted to gas and the existing flue turns out to be far too large for the new appliance, which hurts the draft and lets acidic condensation work on the masonry. A camera inspection is what tells us which of these you are dealing with, and the footage is what shows you the problem with your own eyes rather than asking you to trust a verdict.
Relining a flue to suit what it actually vents
Relining is not a one-size job, and the right liner depends entirely on what the flue is venting. We size a stainless liner, or the appropriate material for the application, to your specific fireplace, wood stove, or gas appliance, because a liner that is too large drafts poorly and lays down creosote faster, while one too small cannot vent the appliance safely. The liner is run the full length of the flue, connected properly at the appliance or the firebox, and insulated where the application and the code call for it, so it both performs and keeps the heat where it belongs. Done correctly, a stainless reline brings a failing chimney back to a safe, properly drafting flue, and on a gas conversion it is often the single thing that makes the new appliance vent the way it is supposed to.
Because relining is work hidden inside the chimney, documentation counts here more than almost anywhere. We show you the camera footage of why the flue needed relining to begin with, the cracked or missing liner the scan turned up, or the size mismatch a conversion left behind, and we confirm the draft and the venting once the new liner is in. We pull the permits a reline requires and work to the recognized venting standards, because a liner is exactly the kind of work where shaving a corner to cut the price puts your household's safety on the line, and that is not how we operate. When the reline is finished, you have a chimney you can actually use, documented from start to finish.
Why a liner is a safety call, not a cosmetic one
It is worth being clear about what is at stake with a liner, because it is easy to defer work you cannot see. A compromised liner is not a comfort or an appearance issue, it is the difference between a chimney that safely carries combustion gases out of your home and one that can let those gases, carbon monoxide included, reach the framing or the living space. That is why a cracked liner is one of the few findings we will tell you should not wait. Continuing to burn through a failed liner is a real risk, not a deferred-maintenance item, and an honest inspection has to say as much.
At the same time, we do not hand out a reline verdict lightly, because it is real work and real money. We recommend it when the camera shows the liner genuinely needs replacing, and we say so plainly when a flue is sound and a reline would be selling you something you do not need. If your chimney can be swept, sealed, and safely used as it is, that is what we will tell you. The reason to trust a reline recommendation from us is that we show you the footage it rests on, and we are just as ready to tell you a liner is fine as to tell you it has failed.
Every part of the stack, from the hearth to the chimney top
A chimney is a system, so chimney liner replacement rarely stands alone, it connects to chimney sweep, chimney inspection, flashing repair, chimney cap installation, masonry restoration, and our crew handles all of it under one roof. We bring the same service to Chimney Liner Replacement in Lincoln Park, Chimney Liner Replacement in Lakeview, Logan Square chimney liner replacement, Chimney Liner Replacement in Irving Park and everywhere else across the Chicago area.
If you searched for a local chimney crew near you, you have reached a local crew, call 447-212-3361 any time. For background, read Converting a Fireplace to Gas on the North Side: What It Means for Your Chimney on our blog, or head back to our Chicago home page to see everything we do.