Gas fireplace service
Sweep & inspection
Caps & crowns
Flue relining
Masonry repairLevel 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.
Why Houston Homeowners Choose HeatShield Chimney Cleaning
We provide independent HeatShield chimney cleaning and Heatshield repair in Houston across Houston, TX, using genuine HeatShield Cerfractory foam and joint repair materials for flue restoration that holds up to our humidity and clay soil movement. Our techs have completed over 800 HeatShield applications on Houston chimneys, from 1960s masonry fireplaces in Montrose to modern prefab flues in Sharpstown. We’re not authorized by HeatShield and don’t claim to be. We’re an independent service provider that knows their product line well enough to tell you when it’s the right fix and when it isn’t. Call (325) 750-6259 for a written estimate before any work starts.
Why Trust Flint Chimney Co Houston for Your HeatShield Chimney Cleaning?
HeatShield works when the flue is prepped correctly and the right product goes into the right failure. Our crew has spent over a decade in Houston attics and on Houston rooftops, and Hank Delano, our owner, came up through the trade at Los Angeles Trade-Technical College before bringing that training to Texas. We’ve seen HeatShield foam applied too thin on a hairline-cracked flue and we’ve seen Joint Repair mortar forced into spalled tile where Resurfacing System was the actual call. Both fail. We know the difference because we’ve corrected both.
We use genuine HeatShield Cerfractory foam and joint repair mortars, not aftermarket substitutes. The expansion profile and cure time of HeatShield’s foam is tuned for flue tile geometry. An aftermarket foam that expands differently will pull away from the tile wall or leave voids behind the surface. We’d rather tell you the honest repair path with the right HeatShield product than sell you a sleeve you don’t need. That’s how warranty-safe service works with us. We document what we find, price it in writing, and stand behind the repair for a full year under our 365-Day Done Right Promise.
Styles & brands we work with





Common HeatShield Chimney Cleaning Problems We Fix in Houston
These are the issues we walk into most often when a Houston homeowner calls about a HeatShield repair or a flue that’s been flagged during cleaning.
- Micro-cracking in clay flue tiles from repeated thermal shock and humidity swings. Houston’s hot, humid air outside and cool chimney interior during a fire create constant expansion and contraction. Hairline fractures open up, smoke seeps through, and you smell it in the living room. HeatShield Cerfractory foam is designed to bridge those cracks when applied to a properly prepped flue.
- Spalling and pitting from low-temperature creosote ignition. In older Houston masonry chimneys that were unlined or partially lined for decades, creosote accumulates and ignites at relatively low temperatures. The flue tile surface pits and flakes. HeatShield Resurfacing System coats the full flue wall and restores a smooth, heat-resistant surface.
- Failed previous sealant jobs where the wrong HeatShield product was used. We’ve walked into homes where someone used Joint Repair mortar on a spalled flue surface, or Cerfractory foam on a flue that needed mechanical resurfacing first. The material flakes off within a year. We grind out the flaking material, prep the surface properly, and reapply the correct HeatShield system.
- Condensation-driven deterioration in metal prefab flues with mismatched CeCure sleeve sizing. Houston’s humidity means condensation inside metal prefab flues is constant. When a sleeve was sized to the nominal flue diameter instead of the actual measured ID, gaps and bypasses happen. We measure the actual flue ID before we spec anything.
- Lean and separation cracks at the roofline in clay soil neighborhoods. In Meyerland and Braeswood Place, expansive clay soil moves chimney stacks. The cracks show up at the roofline and run down through the flue. Cleaning and inspection here has to address structural movement first, then the flue repair. Otherwise you’re foaming a moving chimney and wondering why it cracked again.
HeatShield Parts & Our Repair-vs-Replace Approach
We stock genuine HeatShield Cerfractory foam and Joint Repair mortars locally in Houston so we’re not waiting on a distributor when your flue is open and prepped. No aftermarket foam matches HeatShield’s heat rating or expansion profile. We won’t install one.
For sleeves, we spec HeatShield CeCure only when the flue damage exceeds what foam can structurally bond to. If the flue has deep spalling, missing tile sections, or a lean that’s been stabilized but left the flue compromised, a CeCure stainless sleeve is the right call. If the damage is micro-cracking and surface pitting, HeatShield foam or Resurfacing System is the better value and we’ll say so plainly. Our guarantee covers the repair for one full year, and if a covered repair fails, we return at no charge.
Tell me what you’re seeing, I’ll tell you what it costs to fix it. That’s how Hank puts it, and that’s how every HeatShield estimate works here. You’ll get a camera inspection and a written price before we touch a single flue tile. Call (325) 750-6259.
Our HeatShield Service Process – Step by Step
- 1
Diagnosis with camera inspection. We run a Level 2 inspection and put a camera down the flue. You see what we see. If there are micro-cracks, spalling, or failed prior material, we note the specific HeatShield product needed and why.
- 2
Mechanical creosote removal and surface prep. HeatShield bonds to flue tile, not creosote. We remove the creosote mechanically, then grind or brush the tile surface to the profile HeatShield requires. Skipping this step is why most failed HeatShield jobs fail.
- 3
HeatShield application in lifts. Cerfractory foam goes in controlled lifts, not one heavy pour. Joint Repair mortar is pressed into cracked and spalled mortar joints. Resurfacing System is applied as a full flue wall coating. We tape off the area, control the environment, and follow HeatShield’s cure parameters for our Houston humidity.
- 4
Camera verification and cap reinstall. After the material cures, we run the camera again. You get photo documentation showing full crack bridging or joint fill. We reinstall the chimney cap and clean the firebox.
- 5
Written warranty. Every HeatShield repair carries our 365-Day Done Right Promise in writing. If a covered repair fails within one year, we return free of charge. No argument, no phone tag.
See the difference
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After
Before
After
Before
AfterHeatShield Products We Service & Install in Houston
We work with the full HeatShield line:
- HeatShield Cerfractory Flue Sealant – the foam-based chimney liner repair system for bridging micro-cracks and restoring structural flue integrity
- HeatShield Joint Repair System – for cracked and spalling mortar joints between flue tiles
- HeatShield Resurfacing System – a full flue wall coating for spalling and pitting across the entire flue surface
- HeatShield CeCure Sleeve – a stainless steel sleeve for severely damaged flues diagnosed during HeatShield prep, when foam cannot bond structurally
We stock HeatShield foam and joint repair mortars locally for fast turnaround on Houston jobs. CeCure sleeves are ordered to the measured flue ID, never guessed from a nominal size.
We Also Service These Brands
HeatShield isn’t the only product we work with. We also service and install DuraFlex and Gelco chimney systems in Houston, and we spec the material by the job, not by whatever we have in the truck. If a stainless liner is the honest answer, we’ll say so. If HeatShield is the right fix, we’ll use genuine HeatShield.
FAQs – HeatShield Chimney Cleaning Service in Houston
Cracks wider than 1/8 inch typically exceed what Cerfractory foam is designed to bridge on its own in a single application. In Houston’s humidity, wider cracks also tend to stay damp, which compromises foam adhesion. We would evaluate the flue with a camera and likely recommend either a multi-lift foam application with structural stabilization or a CeCure sleeve. We’ll show you the footage before we quote anything. Call (325) 750-6259 for a written estimate.
A properly applied HeatShield Cerfractory repair on a flue with micro-cracking and surface pitting can last 10 to 15 years in Houston when the chimney structure is stable. A stainless steel liner typically lasts 20 to 25 years. If your chimney has movement from clay soil, HeatShield alone won’t fix that, and you need the structural issue addressed first regardless of which liner system you choose.
Not necessarily. Spalling without through-cracks is often a candidate for HeatShield Resurfacing System, which coats the full flue wall and rebonds the spalled surface. A CeCure sleeve is the right call when the tile has lost structural integrity or has sections missing. We’ll camera-inspect and tell you which path is honest. Estimates are free. Call (325) 750-6259.
No. HeatShield Cerfractory foam is designed for masonry flue tiles, not metal prefab flues with rust-through. Pinhole rust in a metal flue means the metal is compromised and condensation from Houston humidity is the underlying cause. The honest repair is replacement of the damaged flue section or a properly sized CeCure sleeve. We’ll never foam over rust and call it fixed.
Yes, when the smoke smell is coming from micro-cracks or spalling in the flue tiles. HeatShield bridges those cracks and coats the flue wall, which stops smoke from seeping through the flue into the brickwork and into your living space. If the smell persists after a HeatShield application, the source is elsewhere, likely moisture or a structural gap, and we’ll camera-inspect to find it. Call (325) 750-6259 for an appointment.
A standard Chimney Sweep services and Level 2 inspection in Houston typically runs $249 to $429 depending on flue height and creosote volume. HeatShield Cerfractory foam repair on a masonry flue with micro-cracking typically starts around $1,800 and goes up based on flue length and the number of lifts required. A full HeatShield Resurfacing System application often falls in the $2,500 to $4,200 range. CeCure sleeve installations typically run $2,200 to $4,800 depending on flue ID and access. Every quote is written and delivered before work starts. Call (325) 750-6259 for an exact number on your chimney.
Book Your HeatShield Service in Houston, TX
You’ll get a camera inspection, a written price, and a straight answer on whether HeatShield is the right fix for your flue. Call (325) 750-6259 to schedule. Hank and the crew will take it from there.
Written by Hank Delano, Owner at Flint Chimney Co Houston, serving Houston since our founding as part of the Garrison Partners family in 2002.