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 St. Louis, MO
We provide independent HeatShield service across St. Louis, and we’re clear about what that means: we’re not affiliated with, authorized by, or endorsed by HeatShield. We’re chimney professionals who apply HeatShield Cerfractory and related products because they’re a proven way to resurface a failing clay flue. What sets our HeatShield work apart in St. Louis is the housing stock itself. Century-old solid-masonry chimneys, shared flues between flats, and decades of neglect make resurfacing a diagnostic job before it’s an application job. Call (866) 596-7310 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Why St. Louis Residents Choose Us for HeatShield Service
St. Louis homeowners call us because they want one company that can sweep, inspect, and actually repair. HeatShield resurfacing is a repair method, not a cleaning product, and most sweep-only crews can’t offer it. When your flue tiles are pitted or spalling, a brush alone won’t fix the problem.
Our technicians have up to 12 years of experience, and that experience is built on pre-war brick. We know how HeatShield Cerfractory behaves over soot-laden tiles in a Benton Park two-flat, and how a humid St. Louis summer affects the cure. We use genuine HeatShield materials for every resurfacing job so compatibility isn’t a guess. Aftermarket caps and dampers only go in when they meet or exceed the original quality.
Scheduling is straightforward. You book a sweep and a Level 2 inspection together, we tell you what the camera shows, and you get a written estimate before any HeatShield work begins.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
Common HeatShield Chimney Cleaning Problems We Solve in St. Louis
Here’s where HeatShield jobs go wrong in this city, and what we correct.
- Delaminated Cerfractory coating. A HeatShield coating can peel when it was applied over damp or soot-laden flue tiles without proper prep. St. Louis’s muggy summers keep damp flues damp, so surface prep matters more here than in dry climates. We strip the failed coating back to sound tile before reapplying.
- Cracked HeatShield crown repair. Exterior brick chimneys in St. Louis cycle through hard freeze-thaw every winter. A rigid crown coating cracks when water gets behind it and freezes. We re-coat with a flexible HeatShield crown product that moves with the masonry.
- Adhesion failure over glazed or creosoted tiles. HeatShield won’t bond to a glazed or heavily creosoted flue without mechanical roughening first. A rushed application over an unswept flue is a coating that fails within a season or two. Creosote removal comes before resurfacing, always.
- Premature liner wear from moisture intrusion. Deteriorated exterior mortar joints let water into the flue, and a HeatShield liner wears faster when it stays wet. In shared flues this compounds, because one unit’s moisture problem reaches the neighbor’s liner too.
- Resurfacing that masks a flue tie-in. Coating smooths the inside of a flue, but it can’t separate two flues that were illegally joined. In older St. Louis flats, that tie-in needs correction before any resurfacing passes inspection.
HeatShield Service in St. Louis: What Local Conditions Mean for Your Equipment
Dense South City neighborhoods like Benton Park and Tower Grove are where HeatShield work gets interesting. Many 1890s – 1920s two-flats were built with back-to-back fireplaces that originally shared a single chimney breaching. Over the years, units get converted to gas, fireplaces get sealed, and flues get tied together in ways that were never legal. A Level 2 inspection often turns up an unauthorized flue tie-in from the adjoining unit. That’s a carbon monoxide risk and a fire-spread risk, and HeatShield resurfacing alone cannot fix it. Sealing the inside of a shared flue with Cerfractory makes it smoother and more efficient, but the two flues still connect. The correction is separation, then resurfacing each flue independently. This is the part of the job that a standard sweep never reaches, and it’s why we inspect block by block before we quote a HeatShield application in St. Louis.
HeatShield Models & Products We Service in St. Louis
We apply and service the full range of HeatShield resurfacing systems: Cerfractory Flue Sealant for restoring a cracked or pitted clay flue to a smooth liner; Armor, the reinforced system for flues that need more structural support; Crown Repair for flexible coating over a deteriorating crown; and Waterproofing, the vapor-permeable sealer that protects exterior brick without trapping moisture inside.
On the parts side, we use genuine HeatShield materials for all resurfacing so the repair cures and performs the way the system was designed to. For caps and dampers, we’ll fit an aftermarket piece when it equals or beats the original in quality. We tell you which is which, and why.
When the clay tile is too far gone for resurfacing to bond, we’ll say so. Otherwise, repair with HeatShield is the smarter path, and we’ll show you the camera footage that supports the call. Learn more about HeatShield and how the resurfacing system works.
See the difference
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After
Before
After
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AfterHeatShield Service Pricing in St. Louis
Pricing for HeatShield work is set per job by a written estimate, because flue condition varies so much across older St. Louis buildings. A straightforward Cerfractory resurfacing on a single flue costs less than one that starts with creosote removal, crown repair, and a separated shared flue. Waterproofing is priced separately from the flue work.
What the free estimate includes: a Level 2 camera inspection of the full flue, photos you can see for yourself, and a line-item written quote. If part of the job can safely wait a season, we’ll tell you that too. Nothing gets recommended without camera evidence you can review.
Call (866) 596-7310 for an exact quote on your St. Louis chimney. Estimates are free.
Serving St. Louis, MO – Our Local Coverage Area
We serve St. Louis and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs – HeatShield Chimney Cleaning in St. Louis
It doesn’t handle them by itself. Resurfacing smooths the inside of a flue, but it can’t separate two units that share a breaching. We inspect for tie-ins first, correct the separation if needed, then resurface each flue independently. Call (866) 596-7310 to book the inspection.
Because exterior brick chimneys here go through hard freeze-thaw every winter, and a cracked crown lets water into the masonry where it expands as ice. HeatShield’s flexible crown coating moves with the brick instead of cracking against it. It’s one of the cheapest protections against long-term spalling.
Sometimes, and it depends on the brick and mortar condition inside the flue. An unlined chimney needs a thorough inspection before anyone quotes a resurfacing. If the interior brickwork is sound enough to hold a coating, HeatShield can restore a smooth liner. If it isn’t, we’ll say so and explain the alternatives. Call (866) 596-7310 for a straight answer.
Crumbling or peeling material inside the flue, water stains on the damper or smoke chamber, a white chalky bloom on exterior brick, or a musty smell from the fireplace during humid months. Any of those points to moisture getting in and the coating breaking down. A camera inspection confirms it.
Waterproofing slows further spalling by keeping rain out of the brick while letting interior moisture escape. It isn’t a fix for brick that’s already blown, but applied to sound masonry it reduces how much freeze-thaw damage the chimney takes each year. Call (866) 596-7310 for a free estimate.
Service Areas Near St. Louis
We serve homeowners across St. Louis and the surrounding neighborhoods and suburbs, including St. Louis proper, Clayton, University City, Webster Groves, Jennings, and Lemay.
Book Your HeatShield Service in St. Louis Today
If your flue tiles are cracked, pitted, or your crown is failing, a HeatShield resurfacing may be the right repair. We’ll inspect first, show you the camera footage, and give you a written estimate before any work begins. Call (866) 596-7310 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Written by the team at Hawk Chimney Sweep.