The flue liner is the only barrier between a 1,100-degree column of smoke and the wood framing of your house. When clay tiles crack, the fix is a properly sized liner, not wishful thinking.
Most DFW chimneys built before the 1990s were lined with clay tiles, stacked one on top of another with mortar joints between them. Clay is cheap and heat-resistant, but it has two enemies this region supplies in bulk: thermal shock and soil movement. A fast, hot fire in a cold flue can crack a tile in a single evening, and the same shifting clay soil that cracks foundations across Dallas Fort Worth quietly opens the mortar joints between tiles year after year.
Homes from the 1940s and earlier often have no liner at all, just bare brick. That was normal construction then. Today it fails every professional chimney inspection, and for good reason.
A flue liner has one job: keep everything moving up and out. Cracks and open joints let three things escape sideways instead. Heat reaches framing lumber, which lowers its ignition temperature over years of exposure, a slow process called pyrolysis that is behind many of the house fires the National Fire Protection Association traces back to chimneys. Carbon monoxide can drift into bedrooms above the fireplace. And acidic flue condensate soaks into the masonry, eating the chimney from the inside, damage we cover on our chimney water damage repair page.
None of this is visible from your living room. Every one of these problems is visible on a flue camera.
We reline flues with UL-listed stainless steel liner systems, sized to the appliance they serve. Wood-burning fireplaces get heavy-gauge alloy rated for all fuels. Gas appliances get liners matched to their outlet size, because gas exhaust is wet and acidic and destroys oversized, unlined flues from the inside. Where the manufacturer calls for it, we add an insulation wrap so the flue heats up quickly, drafts harder, and builds less creosote.
A correctly installed stainless liner is the last liner most homes ever need. The liners we install carry manufacturer lifetime warranties that stay valid with an annual chimney sweep.
Everything starts with a camera. We scope the flue top to bottom and show you exactly what the tiles look like, no take-our-word-for-it. If the liner is sound, we tell you so and you keep your money. If it is not, we measure the flue, fabricate the liner to length, and install it from the top down, no tearing into walls. The liner connects to the appliance or smoke chamber at the bottom and finishes with a top plate and cap at the crown. If your cap is part of the problem, chimney cap replacement happens in the same visit.
Most single-flue relines are done in one day. You can see finished liner work in our before-and-after gallery.
Two honest things you should hear before spending liner money. First, not every damaged flue needs a full reline. Minor joint damage in an otherwise sound clay flue can sometimes be resurfaced instead, and if that is your situation we will say so. Second, if another company quoted you a liner during a routine cleaning, a second camera look is cheap insurance. The Chimney Safety Institute of America recommends verifying flue condition with a documented inspection, and that documentation is exactly what we hand you.
Questions about your specific flue? Contact us or read what a chimney inspection includes before anyone opens a ladder.
The only reliable way is a camera inspection of the flue. Warning signs you might notice yourself include pieces of broken tile in the firebox, smoke smell in rooms above the fireplace, and rapid creosote buildup. A Level 2 inspection with video documents the condition of every tile joint.
Modern building codes adopted across North Texas require a continuous, intact flue liner, and NFPA 211 treats a damaged or missing liner as a condition to correct before further use. An unlined or cracked flue will also fail a real estate inspection and can affect homeowners insurance claims.
Most single-flue stainless steel relines in DFW are completed in a single day, including the top plate and cap connection. Complex flues with offsets, or jobs that include smoke chamber repair, can run into a second day.
Price depends on flue height, diameter, insulation requirements, and how much connection work the bottom of the system needs, so honest companies quote after a camera look rather than over the phone. We give you the exact number with your Free Online Quote after the inspection, before any work begins.
Yes. Stainless liners install from the roof down through the existing flue. Interior demolition is only needed in rare cases involving severe offsets or collapsed tiles that block the flue path.
316-grade alloy tolerates the higher temperatures and corrosive byproducts of wood burning and is the all-fuel choice. 304-grade is acceptable for many gas applications. We match the alloy to the appliance so the warranty actually holds.
Yes, and it matters more than most homeowners think. Gas exhaust is low-temperature and wet, and in an oversized or unlined masonry flue it condenses into acids that destroy mortar joints. A correctly sized liner keeps gas appliances venting safely.
Usually for the better. A liner sized to the firebox opening, especially an insulated one, warms up faster and pulls harder. Many smoke-rollout problems in older DFW homes trace back to oversized, cold clay flues that a right-sized liner corrects.
Decades. Quality stainless liners carry manufacturer lifetime warranties, with the standard condition that the system is swept and inspected annually. Treated that way, the liner outlives most roofs.
Liner problems rarely travel alone. A camera look often finds related issues in the smoke chamber or firebox, which is where cracked firebox repair and firebox rebuild work comes in. If tiles cracked because the structure above is failing, chimney rebuild or chimney crown repair may be part of the fix. Annual chimney sweeping protects the new liner and keeps its warranty valid, and our FAQ page answers the questions homeowners ask most before booking.
One visit, one video inspection, one plain answer about whether your liner is fine, repairable, or done. No scare tactics, no pressure, and the footage is yours to keep either way.
A continuous, sealed channel inside the chimney that carries smoke and combustion gases from the appliance to open air, while keeping heat and gases away from the structure of the house.
Thermal shock from fast hot fires, freeze-thaw cycles in wet winters, and the constant slight movement of expansive clay soil under the foundation all work on the rigid tile joints.
Bare brick and mortar handling smoke directly. Common in pre-war homes, it allows heat transfer to framing and gas leakage through joints, which is why every modern standard requires lining before use.
A flue that is too big for its appliance stays cold, drafts poorly, and collects creosote or acidic condensate. Matching liner diameter to the appliance outlet is most of what makes a chimney work well.
It keeps flue gases hot all the way up. A warm flue drafts harder, builds less creosote, and produces less condensation, which is why manufacturers require it for many wood-burning installs.
If the masonry structure itself is failing, lining a collapsing chimney wastes money. In those cases we talk about rebuilding first, lining second, and we show you the camera footage that makes the call obvious.
