
Humidity Corrodes Metal Liners
Months of Gulf humidity rust thin factory liners and connector pipe on prefab fireplaces. Rust holes in a liner are a direct combustion-gas leak into the chase.
Sweep $99 · Inspections from $59Sweep $99 · Level 2 inspection $79 · Standard inspection $59
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Relining for San Antonio flues damaged by moisture and rare but hard use. A cracked liner is the one finding that makes a chimney unsafe to use. We scan the flue on camera, show you the footage, and reline only what needs relining.
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Insulated stainless liners
Furnace & water heater liners
Camera scan before & after
Top plate, cap & crown work
San Antonio fireplaces get used a handful of weeks a year, which fools homeowners into thinking the flue is fine. The damage here comes from moisture, not fire: Gulf humidity and sudden downpours enter uncapped or poorly capped flues, corrode metal parts and break down mortar joints between clay tiles over the years.
We inspect with a camera, show you what is actually inside the flue, and reline with stainless steel when the tile has failed. Many homes in Stone Oak, Alamo Ranch and the North Side are factory-built units whose original metal liner has rusted — those get a correctly listed replacement, not a patch.

The liner is the part of the chimney you can never see from the room — and the part that keeps heat and combustion gases away from your home's framing.

Months of Gulf humidity rust thin factory liners and connector pipe on prefab fireplaces. Rust holes in a liner are a direct combustion-gas leak into the chase.

Heavy rain entering an open flue washes out mortar joints between clay tiles season after season, leaving gaps you cannot see from the firebox.

A fireplace used three nights a year still needs a sound liner the first night it is lit. Most of the failures we find in San Antonio were never noticed because nobody looked.
Tell us what you're seeing — tile pieces, a failed inspection, a smoke smell. We scan the flue, show you the footage, and quote only what it needs.
Share what you're seeing and we'll contact you to confirm the right next step.
Send My Chimney Details
A continuous stainless liner sized to the appliance, wrapped in insulation where clearance requires it, running from the appliance connection to the top plate — no joints inside the chimney to leak.

Correctly sized liners for gas appliances still venting into an old masonry flue, which fixes both the condensation damage and the weak draft that caused it.

The reline is finished with a sealed top plate and cap so water cannot get between the liner and the masonry. Crown repair is quoted in the same estimate when it is needed.

We record the condition of the flue before we quote and after we finish, so you see exactly what you paid for instead of taking someone's word for it.
Failed inspection, tile pieces in the firebox, smoke smell, a home sale deadline — tell us and we book the camera scan.
A camera goes the full length of the flue. You see the footage and the actual condition of the liner before any price is discussed.
The liner is sized to the appliance and the flue — not guessed. Wrong-size liners cause draft problems that are worse than the original issue.
You get the liner type, insulation, top-plate work and total price in writing before we order anything.
The liner is installed, connected, sealed at the top, and re-scanned. You get photos and footage of the finished flue.
Nobody can quote a reline over the phone without knowing the flue height, diameter, insulation requirement and appliance. Anyone who does is guessing — and the guess usually rises once they are on site. We scan first, then give one written price that does not move.
If the scan shows your liner is sound, we tell you so. A reline you do not need is the most expensive repair there is.
5.0 average rating
Serving San Antonio, Texas and the surrounding area
“Water was coming in around our chimney every time it rained. Captain found the cracked crown and bad flashing, explained everything clearly, and fixed it in one visit. Not a drop since.”
Michael R.
Chimney Leak Repair · San Antonio, TX · 2 weeks ago
“Very professional from start to finish. The inspection was thorough, they showed me photos of everything, and the cleaning was spotless — no mess left behind. Fair price too.”
Sarah K.
Chimney Inspection & Cleaning · Austin, TX · 1 month ago
“Our 90-year-old brick chimney was crumbling. The tuckpointing work is beautiful — it looks brand new but still matches the house perfectly. True craftsmen.”
David & Anna T.
Tuckpointing & Masonry Repair · Houston, TX · 1 month ago
Got an inspection report you don't understand? Call and read it to us — we'll tell you plainly what it means.
(682) 217-3577It depends on the flue height, the liner diameter, whether insulation is required and what appliance it serves. A short furnace liner and a full insulated fireplace reline are very different jobs. We scan the flue first and give a written price before ordering anything.
The reliable answer comes from a camera scan of the flue. Common clues are pieces of clay tile in the firebox, a smoke or gas smell, a failed Level 2 inspection, or a furnace that back-drafts. Visible cracks and open joints on camera confirm it.
A quality stainless liner, correctly sized and installed, typically lasts decades and is usually sold with a long manufacturer warranty. Thin or wrongly sized liners fail early, which is why sizing and material matter more than price.
No. A cracked liner lets heat and combustion gases reach combustible framing behind the masonry, and it is one of the few findings that make a chimney unsafe to use until it is corrected.
Often yes. Modern high-efficiency gas furnaces and water heaters vented into an oversized old masonry flue produce condensation that destroys tile and mortar. A correctly sized liner solves the draft and the damage.
Most straightforward relines are done in a day once the correct liner is on hand. Unusual flue sizes, offsets and factory-built components may need an ordering window, which we tell you about after the scan.
Yes — 10% off for military, veterans, seniors 65+, police, firefighters and EMTs. Mention it when you call (682) 217-3577.
Use is not the issue; condition is. A cracked or rusted liner is unsafe the first time you light a fire. If the camera shows the liner is intact, we tell you so and you spend nothing.
Factory-built fireplaces must use the pipe listed for that unit — they cannot be relined like masonry chimneys. We identify the model and replace the correct listed components, or tell you honestly if the unit itself is past its life.
One camera scan, one honest answer, one written price. Call now and we'll get you on the schedule.