San Marcos chimneys sit idle through long, hot months, then get used hard when a cold front finally drops in - and the ground under them never quite stops moving. Our techs sweep, inspect on camera, and repair yours properly - licensed and insured, with free estimates.
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Sweep, cleaning, repair, leak repair, cap repair and liner repair - the full chimney service list for San Marcos, with the same crew and the same free estimates. Below is chimney in San Marcos, TX in full — every service, the local conditions and the areas covered.
Sweep & Cleaning
Chimney Sweep
The full professional sweep: rotary brushes scrub the flue from top to bottom while a HEPA vacuum keeps every speck of soot sealed in — the visit that keeps a chimney safe to burn in. In San Marcos, that includes clearing wasp and bird nesting out of an idle flue. Chimney Sweep in San Marcos, TX is one call away, every day of the week.
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Sweep & Cleaning
Chimney Cleaning
Dust, debris and nesting settle into an idle San Marcos flue through the long, hot summer. Creosote, soot and ash removed from the flue, smoke shelf and firebox — the deep clean that kills the campfire smell and the fire risk with it. It is why chimney cleaning in San Marcos, TX keeps getting recommended to neighbors.
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Repair
Chimney Repair
Any chimney, any problem — leaks, cracks, crumbling brick, bad draw. Around Hays County, a leaning stack often needs joint repair before it worsens. Diagnosed on camera first, then repaired properly with the right materials. The crews behind chimney repair in San Marcos, TX are the same ones who cover the ZIP codes listed below.
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Inspection & Care
Chimney Inspection
A full inspection of flue, liner, cap, crown, flashing and firebox — camera inside the flue, with a plain-language report of what is safe, what is not, and what can wait. A flue that sat idle all summer gets checked for wasp nesting and debris before anyone learns about it from smoke in the room. Booking chimney inspection in San Marcos, TX takes one call, and the tech arrives with everything the job needs.
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Install & Replace
Chimney Cap Installation
A quality stainless cap keeps rain, birds and sparks where they belong. Fitted to your flue, secured properly, and screened against animals. Around San Marcos, the screen is the point in summer - wasps, mud daubers and birds look for an open flue, and a fitted cap closes that door. When neighbors talk about chimney cap installation in San Marcos, TX, this is the visit they mean.
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Repair
Chimney Liner Repair
Cracked tiles, gaps at the joints, a liner that is shifting — liner faults found on camera and repaired so hot gases stay inside the San Marcos flue where they belong. A sound liner matters most on the coldest nights, when the flue finally works hard. The crews behind chimney liner repair in San Marcos, TX are the same ones who cover the ZIP codes listed below.
Get a free estimateNeed something else — a damper, a blower, a smoke problem, a bird in the flue? We cover all 27 fireplace specialties. Call (888) 258-0797 and describe it.
A chimney in San Marcos is not fighting a long winter - it is fighting clay soil that shifts under the masonry, heavy rain looking for a way in, storm damage up top, and long idle months in between. This is what we actually find, and what we check on every visit.
Much of Texas sits on clay soil that swells when wet and shrinks when dry, so foundations and chimneys move a fraction at a time, season after season. Masonry cannot flex, so the movement opens mortar joints, cracks crowns, and can leave a chimney leaning. We check joints and alignment on every inspection.
Storm season in San Marcos throws hail, driving wind and falling limbs at the chimney top. Caps dent, crack or tear loose, flashing lifts, and a single storm can open a flue to rain and animals overnight. After a hard storm is the right time to check the top, not the next fire.
Short burning seasons here encourage short, cool fires - an evening fire lit and let to smolder - and that pattern lays down glazed creosote faster than hot, steady fires do. Even a mild Hays County winter can coat a flue. Sweeping is fire prevention here too, not just housekeeping for heavy burners.
Long, hot summers bake chimney crowns, dry out sealants, and age cap metal across San Marcos, while sudden downpours test every crack the heat opened. Crowns that looked sound in spring can be split by fall. We check the crown, cap and flashing together, because heat and rain work on all three.
San Marcos sits in Hays County, and the ZIP list at the bottom of this page covers 1 serviceable ZIP codes — 78666 through 78666. The closest served neighbors are Martindale, Kyle, Niederwald, and every one of them is covered by the same crews, the same day, under the same number: (888) 258-0797.
Same-day service, free estimates, licensed & insured — and a flue you can see on camera, clean from top to bottom.
Yes - it is one of the main masonry problems we see in San Marcos. Clay soil swells when wet and shrinks when dry, moving the footing a fraction at a time. Masonry cannot flex with it, so mortar joints open, crowns crack, and chimneys can lean. Caught early, joint repair holds; ignored, it becomes structural work.
At least once a year if you burn at all regularly. Short, cool evening fires lay down glazed creosote faster than hot fires do, and an idle flue collects nests and debris all summer. The annual sweep clears the buildup and blockages, and checks the cap, crown and liner as well.
Do not light a fire, and do not spray into the flue yourself. Wasps and mud daubers nest in idle San Marcos flues, and the nesting blocks the draft, so a fire would push smoke and carbon monoxide into the room. We clear the flue safely, check the liner for damage, and fit a screened cap so it cannot happen again.
Get it inspected promptly. A lean usually means the soil under one side moved more than the other, and the same movement is cracking mortar and opening the joint where the chimney meets the house. Early movement can often be stabilized with joint and flashing repair; a lean left for years becomes a rebuild.
Creosote and soot deposits absorb moisture and dust while a flue sits idle, and warm air brings the sour, campfire smell down into the room. The smell often means the cap or crown is also letting water in. A cleaning removes the deposits, and an inspection finds where any moisture is entering the system.
No — and be wary of anyone who does. Every chimney fails differently, so a phone price is a guess that changes at your door. Our estimates are free: a tech looks at the actual problem, then gives you one clear price before any work starts.
Chimney Service Co is a national company with local technicians serving San Marcos street addresses across the ZIP codes below — same-day service and free estimates, every day 8 AM – 8 PM. More of Texas is covered from our Texas page. The San Marcos list below covers 1 ZIP codes, 78666 through 78666.
Don't see your ZIP? San Marcos also uses P.O. Box and single-organization ZIP codes that have no street addresses — call (888) 258-0797 and we will confirm coverage for your street address on the call.
Also serving nearby: Martindale, TX · Kyle, TX · Niederwald, TX · Uhland, TX · Wimberley, TX · Woodcreek, TX.
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