Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
HeatShield Chimney Cleaning in Schertz, TX | Alcott Chimney San Antonio
We provide independent HeatShield cleaning, repair, and resurfacing across Schertz, and the one thing that makes our work different here is that we know exactly what cedar and oak creosote does to a HeatShield liner in this specific climate. Hot, fast-burning fires followed by humid summers create a stickier, more corrosive creosote than you’d see in drier parts of Texas, and that changes how a flue needs to be cleaned and inspected. If your HeatShield-protected chimney hasn’t had a Chimney Sweep - Schertz service in a while, call us at (903) 515-5079 for a free estimate. We’ll send a technician whose name and photo you’ll see before we arrive.
Why Schertz Residents Choose Us for HeatShield Service
Alcott Chimney San Antonio has been serving homeowners since 2002 under Ruben Castellano’s leadership, and we’ve rebuilt and resurfaced hundreds of Schertz-area flues with HeatShield’s Cerfractory system. We know how it performs under the heavy, sticky creosote that cedar and oak produce, and we know what freeze-thaw cycling does to clay liners in this part of the Hill Country transition zone. That experience means we don’t guess. We camera-scan the flue, show you what we found, and give you a written price before any work begins.
Every technician we send to a Schertz home has passed a background check and identity verification through the Threshold Standard. You’ll get their name and photo before the appointment, and they’ll show a photo ID badge at your door. No exceptions. We also carry genuine HeatShield Cerfractory materials, not box-store substitutes, because the proprietary mix is rated for the thermal and moisture swings we see here. You can learn more about our HeatShield sales & service work across the region.
Styles & brands we work with
Common HeatShield Chimney Cleaning Problems We Solve in Schertz
- Hairline cracks in clay flue tiles from freeze-thaw cycles. Schertz winters are usually mild, but when a hard freeze hits after a wet fall, moisture inside the clay liner expands and cracks it. Those hairline cracks let hot gases and creosote reach combustible framing. We camera-scan to find them, then apply HeatShield Cerfractory flue sealant over the entire liner to close them off.
- Eroded mortar joints in smoke chambers from acidic cedar creosote. Cedar burns hot and fast, but it leaves behind a creosote that’s more acidic than oak’s. In older Schertz ranch homes with masonry fireplaces, that creosote eats at the mortar joints in the smoke chamber. HeatShield’s Joint Repair System re-seals those joints before they become a fire hazard.
- Spalling chimney crowns letting water behind the Cerfractory layer. When a crown starts chipping and cracking, water finds its way behind the HeatShield coating and into the flue. We repair the crown with HeatShield CrownCoat and make sure the waterproofing barrier is intact before water does more damage.
- Rust-jacked dampers in Cibolo Creek-adjacent homes. Homes near the creek deal with noticeably higher humidity, and that rusts dampers shut by late summer. When a homeowner finally forces it open for that first cold snap fire, the backdrafting pushes smoke into the house and accelerates creosote buildup on the HeatShield liner.
- Heavy creosote glaze that standard brushes can’t remove. Cedar and oak produce a dense, sticky creosote that hardens into a glaze. We use rotary cleaning heads and chemical treatments when needed to break through it without damaging the HeatShield surface underneath, which matters if your liner was recently resurfaced.
HeatShield Service in Schertz: What Local Conditions Mean for Your Equipment
Here’s something specific to Schertz that most chimney companies won’t tell you: the first hard freeze after Thanksgiving hits homes along Cibolo Creek hardest. The higher humidity along the creek rusts dampers shut by late summer, so when owners finally force them open for that first cedar fire of the season, they often dislodge cracked flue tiles that a HeatShield resurfacing then has to address. We see this pattern every year, and it’s why we recommend a Chimney Inspection - Schertz before your first burn of the season, not after. In neighborhoods like Ashley Place and Savannah Square, where wood-burning fireplaces are a big part of the home’s character, catching freeze-thaw damage early is the difference between a $250 cleaning and a full flue resurfacing.
Our crew was called to a 1980s brick-veneer ranch on Cherry Tree Lane in Ashley Place after a homeowner noticed smoke rolling back into the living room during a February cold snap. The damper had rusted open, and a camera scan showed three vertical cracks in the clay flue tiles from freeze-thaw cycling. We removed the heavy creosote, then applied HeatShield’s Cerfractory flue sealant over the entire liner and coated the smoke chamber, getting the fireplace safe for burning oak by that evening. That’s the kind of job we do routinely in Schertz.
HeatShield Models & Products We Service in Schertz
We work with the full HeatShield product line: HeatShield Cerfractory Flue Sealant for resurfacing cracked clay liners, the Joint Repair System for re-sealing mortar joints in smoke chambers, the Smoke Chamber Repair System for rebuilding deteriorated chambers, and CrownCoat for chimney crown waterproofing and repair. We use genuine HeatShield Cerfractory materials on every repair because the proprietary mix is engineered for exactly the thermal and moisture swings Schertz experiences. We only recommend full resurfacing when the existing liner is too spalled or offset to safely accept a patch. For most Schertz homes, a targeted joint repair or partial sealant application gets the flue safe again without replacing the liner.
See the difference
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AfterHeatShield Service Pricing in Schertz
What drives the cost of HeatShield service in Schertz is the condition of your existing liner. A standard chimney sweep with a camera inspection typically runs $229 to $329 before any repairs. Joint repair work on a smoke chamber usually lands between $800 and $1,500 depending on how many joints need re-sealing. A full HeatShield Cerfractory flue resurfacing generally runs $2,500 to $4,500 on a typical Schertz masonry chimney, with CrownCoat work adding $400 to $900. Every estimate includes the camera scan, a written price before work begins, and our 365-Day Done Right Promise on any repair. If a repair fails within the coverage period, the second visit is free. Call (903) 515-5079 for an exact quote for your chimney.
Serving Schertz, TX - Our Local Coverage Area
We’re based in the Schertz area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – HeatShield Chimney Cleaning in Schertz
Yes, and that’s actually the most common application we do in Schertz. HeatShield’s Cerfractory flue sealant is designed to bond to clay tile and fill hairline cracks caused by freeze-thaw cycling. We camera-scan the flue first to confirm the tiles aren’t offset or spalled beyond repair, then apply the sealant in a continuous layer. If your chimney has cracked tiles, call (903) 515-5079 and we’ll tell you honestly whether a resurfacing will fix it or whether you need a full liner replacement.
HeatShield doesn’t repair dampers directly, but we handle damper replacement or repair as part of the job. The bigger risk is what happens when you force a rusted damper open: the sudden draft can dislodge cracked flue tiles and pull creosote into the smoke chamber. We’ll inspect everything before we touch the damper so you don’t create a bigger problem than the one you started with.
With proper annual sweeping, a HeatShield Cerfractory liner in a Schertz fireplace typically lasts 20 to 25 years or more. The key is keeping the creosote load down, because cedar and oak creosote is acidic enough to erode the unprotected mortar around a HeatShield liner even if the liner itself holds up. We recommend a sweep every year if you burn regularly, and every two years if the fireplace is mostly decorative. Call us for a free estimate and we’ll check the liner condition while we’re there.
Yes. HeatShield’s Smoke Chamber Repair System is designed for exactly that: re-sealing eroded mortar joints and smoothing the chamber surface so creosote has less to cling to. Older ranch-style homes in Schertz from the 1970s are the most common candidates we see, because their smoke chambers were built with corbeled brick that collects creosote in the joints. We’ll show you the camera images before we recommend the work.
For most masonry chimneys in Schertz, yes. HeatShield preserves the original clay tile structure and adds a sealed, insulated layer inside it, which costs less than a full stainless steel liner installation and doesn’t require the same level of demolition. Stainless steel liners are the better choice when the clay tiles are too offset or spalled to safely accept a HeatShield coating. We’ll tell you which one fits your chimney after the camera inspection, and the written estimate will show the math.
Service Areas Near Schertz
We serve Schertz and the surrounding communities, including Schertz service area, HeatShield service in Cibolo, HeatShield service in San Antonio, plus Boerne, Alamo Heights, and Windcrest. If you’re not sure whether we cover your neighborhood, call us and ask.
Book Your HeatShield Service in Schertz Today
If your Schertz chimney needs HeatShield cleaning, repair, or resurfacing, call (903) 515-5079. We’ll schedule a camera inspection, give you a written price before any work begins, and send a technician whose name and photo you’ll know before the appointment. Ruben Castellano and our crew would rather give you a straight answer today than a vague promise you have to call us back about tomorrow.
Written by Ruben Castellano, Owner at Alcott Chimney San Antonio, serving Schertz since 2002.