Chimney Liner Installation in Port Washington, Cedarburg & Mequon, WI
Here’s something most homeowners in this area don’t know until we tell them: a lot of older homes were built without a chimney liner at all. It’s not a defect , it’s just how chimneys were built before liner installation became standard practice. But using a chimney without one today isn’t safe, and in Wisconsin’s climate, even chimneys that had liners installed can develop serious problems over time without anyone realizing it.
We install stainless steel chimney liners. The industry standard for durability and safety, and every liner we install comes with a lifetime manufacturer warranty.
Why So Many Chimneys in This Area Need a Liner
Older homes built without one
Homes built before the 1940s and 1950s were often constructed with brick and mortar chimneys and no internal liner at all. If your home is older and has never had a liner inspection, there’s a real chance it’s running without one.
Wisconsin winters crack the original clay flue tiles
Even chimneys that were built with clay tile liners develop problems over time. Wisconsin’s freeze-thaw cycles are brutal on the inside of a chimney. The tiles crack, joints lose their mortar, and gaps open up between sections. The problem is you usually can’t see any of this from the outside or even by looking up from the firebox. The damage is on the inside of the flue, and it takes a camera inspection to find it.
When those gaps exist, combustion gases , including carbon monoxide , can seep through the cracks and into the walls and living spaces of your home instead of venting safely outside.
Changing your heating system
This one surprises a lot of people. When you upgrade to a high-efficiency gas furnace or water heater, the exhaust gases are cooler and more acidic than older systems produced. Without a properly sized stainless steel liner, that acidic condensation eats the old masonry from the inside out , quietly, invisibly, and expensively.
Installing a wood stove insert also requires a liner sized to match the stove’s outlet exactly. It’s not optional , it’s both a code requirement and a safety necessity.
How Rick Usually Finds Out You Need One
Most of the time, the client isn’t calling about a liner , they’re calling about something else. Rick discovers the liner problem during a chimney sweep, because every sweep includes a camera inspection. That’s when he sees cracked tiles, missing mortar between sections, or pieces of clay and terracotta already falling into the firebox.
Other times, clients notice the terracotta pieces themselves , little red fragments showing up at the base of the firebox, and that’s what prompts the call. And occasionally, smoke smells in upper rooms or a carbon monoxide detector going off sends people looking for answers.
What Rick Installs and Why
Rick installs stainless steel liners for almost every job, and for good reason. The type depends on your specific situation:
| Application | Liner Type | Why |
|---|---|---|
| Traditional wood-burning fireplace (damaged clay tiles) | Flexible stainless steel (316L) | Handles high heat and creosote from wood burning |
| Gas furnace or water heater conversion | Stainless steel (AL29-4C) | Built to resist the acidic condensation from gas exhaust |
| Wood stove insert installation | Insulated flexible liner | Keeps the flue warm to reduce creosote buildup |
Every liner Rick installs comes with a lifetime manufacturer warranty , one of the few chimney components where that level of coverage is available.
Frequently Asked Questions
Does the liner need to be insulated?
For wood-burning applications, insulation isn’t always required by code, but it makes a real difference in performance. An insulated liner keeps combustion gases hotter as they rise, which improves draft and significantly reduces creosote buildup. For gas appliances, insulation helps prevent acidic condensation from corroding the liner. Rick will tell you whether insulation makes sense for your specific situation.
What size liner do I need?
The liner diameter must match the outlet size of your stove or insert exactly , usually 6 or 8 inches. If the liner is too large, combustion gases cool too fast and produce more creosote. If it’s too small, smoke backs up into the house. Getting the size right is one of the most important parts of the installation, and it’s determined before anything is ordered.
Can I install a liner myself?
Liner kits are sold online, but the installation is more difficult than it looks, especially getting a rigid or insulated liner down a narrow, curved flue without damaging it. There’s also the risk of working on the roof, and the need to meet local building codes. A liner that’s installed incorrectly can restrict draft, fail prematurely, or create a safety hazard. It’s not the place to cut corners.
How long does a stainless steel liner last?
A quality stainless steel liner installed correctly typically lasts 15–25 years with proper maintenance, and many come with lifetime manufacturer warranties when professionally installed. The key to longevity is annual cleaning , using the right brushes. Wire brushes damage the liner; Rick uses poly or nylon brushes specifically designed for stainless steel flues.
What happens if I use the fireplace without a liner?
An unlined chimney isn’t necessarily an immediate emergency, but it does mean combustion gases , including carbon monoxide , are venting through gaps in the masonry instead of through a sealed system. Over time, those gases degrade the surrounding mortar and can seep into living spaces. It also means there’s no fire-resistant barrier between the flue and the wood framing of the house.
Will homeowners insurance cover liner installation?
If the liner failed due to a chimney fire or a sudden event, some policies may cover it. Gradual deterioration from age and freeze-thaw damage typically isn’t covered. We can provide documentation of what we find during the inspection if you need it for an insurance inquiry.
Why Homeowners Choose Real Chimneys
Every job is handled by Rick, our lead technician with over 8 years of hands-on chimney experience, not a subcontractor. We respond fast (often same day), give you a clear price before we start, and we stand behind our work. If something isn’t right, we come back and make it right.
Not Sure If Your Chimney Has a Liner, or If It’s Still Intact?
The only way to know for sure is a camera inspection. We proudly serve homeowners throughout Ozaukee, Sheboygan, Washington, Milwaukee, and Waukesha Counties, along the I-43 corridor and Lake Michigan shoreline. See our full service area.
Call us today, and find out what’s actually going on inside your chimney.
