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 Cibolo, TX | Alcott Chimney San Antonio
We’re an independent HeatShield service provider working throughout Cibolo, and the short answer is this: if your HeatShield-applied flue sealant or smoke chamber parging is failing, we can clean it, assess it, and repair it with genuine HeatShield cerfractory material, usually within the same week. The thing that makes our HeatShield work different in Cibolo is that we know exactly how this product behaves in our humid, seasonal-use climate. Call (903) 515-5079 for a free estimate from a technician who will show you a photo ID before stepping inside.
Why Cibolo Residents Choose Us for HeatShield Service
Ruben Castellano has been inspecting and repairing chimneys across the San Antonio area for well over a decade, and his crew has applied HeatShield systems in more Cibolo homes than we can count. We’re not manufacturer-authorized, and we don’t pretend to be. What we are is independent, which means we tell you when HeatShield is the right fix and when it isn’t. We carry HeatShield sales & service expertise that comes from working with the actual product, not from reading a brochure. You’ll know your technician’s name and see their photo before we arrive, and every job gets a written price before any work starts.
Styles & brands we work with
Common HeatShield Chimney Cleaning Problems We Solve in Cibolo
- Cracked HeatShield Joint Repair System mortar joints. Cibolo’s humid summers push moisture into tiny hairline fractures in the joint repair material, and once creosote absorbs into those cracks, cleaning becomes harder and the seal fails faster. We remove the degraded material and reapply HeatShield specifically, never generic mortar.
- Smoke chamber parging that’s spalling. Older Cibolo homes in Deer Creek and Buffalo Crossing often have original corbeled brickwork that was never smoothed properly. HeatShield parging applied over that surface can flake off within a few seasons if the prep work wasn’t done right. We strip it, prep aggressively, and reapply in two coats.
- Crown Coat shrinkage cracks. Cibolo gets enough UV exposure and the occasional freeze-thaw cycle that HeatShield Crown Coat can lose its flexibility on masonry crowns, leading to shrinkage cracks that need a recoat. We clean the crown surface, check for moisture intrusion, and recoat when the existing material has aged out.
- Delamination in prefabricated metal chimneys. Newer Cibolo subdivisions are full of prefab metal flues, and HeatShield cerfractory material can peel away from smooth metal walls if the surface wasn’t prepped with enough tooth. High humidity makes this worse. We see it, we fix it, and we reapply with proper surface profiling.
- Creosote hardening from seasonal use. Cibolo homeowners use fireplaces mainly in winter, which means creosote sits for months, hardens, and becomes genuinely labor-intensive to remove. A standard sweep takes longer on these chimneys, and we price that honestly up front.
HeatShield Service in Cibolo: What Local Conditions Mean for Your Equipment
Here’s a fact about Cibolo that shapes most of our HeatShield work here, and it isn’t equally true in Schertz or Selma. In Cibolo’s older subdivisions like Deer Creek and Buffalo Crossing, many original fireplaces were built without dampers or with smoke chambers that were corbeled so poorly that smoke never made a clean turn into the flue. That defect shows up as recurring smoke blowback, and it’s a structural problem, not a cleaning problem. HeatShield’s Smoke Chamber Repair System is the most common repair we perform in Cibolo, far more than in surrounding communities. We recently worked on a 1990s brick home in Buffalo Crossing where the homeowner dealt with smoke backing into the living room every time the wind picked up. Our tech found severely eroded corbeled brickwork with creosote packed into the gaps. Two coats of HeatShield’s Smoke Chamber Repair System smoothed the transition from firebox to flue, and after curing, the fireplace drafted correctly, no more blowback even on windy Hill Country nights.
HeatShield Models & Products We Service in Cibolo
We service the four main HeatShield product lines: the Joint Repair System, Smoke Chamber Repair System, Crown Coat, and Flue Sealant. For HeatShield-applied surfaces, we use genuine HeatShield cerfractory material exclusively. That’s not brand loyalty for its own sake. The proprietary blend is formulated for the specific thermal expansion of chimney liners, and substituting generic mortar creates a failure point that costs more to fix later. For ancillary parts like dampers, caps, and flashing, we recommend quality aftermarket components when they match or exceed OEM specs. We keep common HeatShield application materials stocked locally, which speeds up turnaround for Cibolo homeowners.
See the difference
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AfterHeatShield Service Pricing in Cibolo
A standard Chimney Sweep in Cibolo typically runs $150 to $250 before any repairs. HeatShield-specific work costs more because the material itself is specialized and the prep work takes time. Smoke chamber repair with HeatShield’s system usually falls between $800 and $1,800 depending on the size of the chamber and how much old parging has to come out first. Crown Coat application on a masonry crown typically runs $400 to $900. Your written estimate covers the exact scope with real numbers before any work starts. Call (903) 515-5079 and we’ll walk through what your chimney actually needs, not what a generic checklist says it needs.
Serving Cibolo, TX - Our Local Coverage Area
We’re based in the Cibolo 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 Cibolo
HeatShield cerfractory material handles humidity better than traditional parging because it’s designed to bond to the flue walls rather than just sit on top of them. Traditional parging is essentially mortar slapped over brick, and Cibolo’s moisture cycles make it crack and separate. HeatShield’s sealing system penetrates into the existing masonry and hardens into a cohesive surface. The catch is that prep work matters more in Cibolo than in drier climates, because high humidity means any surface contamination gets locked in under the sealant. Call (903) 515-5079 for an honest assessment of your specific chimney.
Yes, in many cases HeatShield’s cerfractory material can repair a prefab metal chimney without a full pipe replacement. The flue sealant bonds to the metal surface and covers minor cracks or gaps. What matters in newer Cibolo subdivisions is surface prep. Smooth metal walls need aggressive profiling before the material will adhere properly, and if that step is skipped, you get delamination within a few humid seasons. We don’t skip it.
Homes in Deer Creek and Buffalo Crossing were built in an era when smoke chambers were corbeled by hand, and the quality of that brickwork varies wildly from house to house. Some chambers are so rough that smoke loses velocity and spills back into the room. Newer homes in Cibolo use prefabricated chimneys with manufactured smoke chambers that don’t have this problem. The fix in those older homes is HeatShield’s Smoke Chamber Repair System, which smooths and seals the chamber so the fireplace drafts correctly.
It prevents the specific kind of cracking caused by thermal expansion and moisture absorption. HeatShield Crown Coat is an elastomeric coating that flexes with the crown as it heats and cools, which concrete and mortar don’t do. In Cibolo, the bigger issue is that our sun bakes the crown during the day and occasional winter freezes stress it further. Crown Coat won’t fix a structurally failing crown, but for hairline cracking and surface deterioration, it’s the right material. We’ll tell you honestly if your crown needs more than a coating.
HeatShield is not a DIY product. The cerfractory sealant requires specific application equipment, surface preparation that varies by chimney type, and a curing process that has to be done correctly or the material fails early. A homeowner applying this material to their own flue gets no manufacturer-backed installation and no way to inspect the result from inside the chimney. We’re insured, licensed, and every technician who arrives at a Cibolo home has passed a background check and identity verification. Call (903) 515-5079 for a free estimate.
Service Areas Near Cibolo
We serve Cibolo and the surrounding communities. If you’re in San Antonio, HeatShield service in San Antonio covers the city proper. For neighbors just south of us, HeatShield service in Schertz is available. We also work in Boerne, Alamo Heights, and Windcrest. Our coverage follows Cibolo service area boundaries and reaches the entire metro.
Book Your HeatShield Service in Cibolo Today
If your HeatShield-applied chimney is showing cracks, spalling, or smoke blowback, schedule a Chimney Inspection - Cibolo by calling (903) 515-5079. We’ll schedule a technician who arrives with a photo ID badge and a written estimate before any work begins. Free estimates, straight answers, and a 365-day guarantee on every repair.
Written by Ruben Castellano, Owner of Alcott Chimney San Antonio, serving Cibolo since 2002.