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 Marietta Homeowners Choose HeatShield Chimney Cleaning
We’re an independent HeatShield in Marietta chimney cleaning and repair provider serving the surrounding Cobb County area. Homeowners call us when a standard sweep isn’t enough – when the flue tiles inside their chimney are spalling, the mortar joints between them have eroded, or a smoke chamber is leaking gases where cameras show it shouldn’t be. HeatShield’s Cerfractory sealant system is the repair method we trust for these jobs because it restores the flue surface instead of requiring a full teardown. We are not affiliated with or authorized by HeatShield – we’re a local chimney company that works with this product line because we’ve seen it perform in Marietta’s specific climate. Call (762) 249-4619 for a free estimate on HeatShield service.
Why Trust Hadley Chimney Marietta for Your HeatShield Chimney Cleaning?
Our techs perform hundreds of HeatShield resurfacing and repair jobs a year across Cobb County. We know this system inside out – from spalling flue tiles that need a Cerfractory coating to weak-heat applications where the surface must be prepped for a mechanical bond. Cory Mitchell, our owner, started learning chimney mechanics at Los Angeles Trade-Technical College and spent nearly two decades on real job sites across the Southeast before building our Marietta crew. He’s the kind of guy who will text you a photo of what the camera finds before he ever recommends a repair. I’ll send you the photo first – then we’ll talk about what it means.
That matters because HeatShield is not a product you want installed by someone who learned it from a YouTube video. The Cerfractory foam application requires a clean substrate, the right ambient temperature, and a consistent bead from the applicator gun. When we work on HeatShield systems in Marietta, we bring that hands-on familiarity to every flue. We use HeatShield’s proprietary materials, we follow the cure times, and we document the before-and-after with camera footage you can see for yourself. Every repair we do carries our 365-Day Done Right Promise: a written guarantee, plus a free second visit if the repair fails.
Styles & brands we work with





Common HeatShield Chimney Cleaning Problems We Fix in Marietta
HeatShield is a repair system, not a miracle. These are the specific failure modes we see most often on Marietta chimneys, and what causes them.
- Spalled flue tiles from years of acidic creosote. Creosote isn’t just a fire risk – it’s acidic. In Marietta’s humid subtropical climate, creosote absorbs moisture, turns sticky, and eats into the terracotta flue surface over time. We see flue tiles flaking and delaminating in older bungalows near the Marietta Square. HeatShield Cerfractory Flue Sealant is what we apply to restore that surface without relining the whole chimney.
- Eroded mortar joints between flue tiles. The bond between terra cotta flue sections is water-soluble mortar. Marietta’s freeze-thaw cycles and summer thunderstorms work on those joints year after year. Once the joints open up, hot gases leak into the chimney cavity. The HeatShield Joint Repair System is the fix – a foam-applied Cerfractory that fills those joints and seals them permanently.
- Leaking smoke chambers behind corbelled brick. Older fireplaces in Marietta’s historic districts often have smoke chambers built from corbelled brick with gaps and voids no brush can reach. The HeatShield Smoke Chamber Repair System is formulated for exactly this surface. We apply it after removing decades of soot and creosote buildup, and the chamber pulls correctly again.
- Failed HeatShield applications from improper surface prep. We’ve had calls from homeowners in East Marietta who paid for a HeatShield coating elsewhere and it started flaking off within a year. The cause is almost always the same: the original tech didn’t clean the flue surface thoroughly before applying the Cerfractory. HeatShield bonds mechanically – if the substrate has creosote or soot residue, adhesion fails. We re-prep and re-coat properly.
- Chimney cap and crown issues that accelerate HeatShield problems. A cracked crown or missing cap lets water pour directly onto flue tiles and smoke chamber walls. We routinely resurface crowns and install caps before doing HeatShield work – otherwise the new coating is fighting an ongoing water problem. It’s part of why we do a camera inspection before any resurfacing quote.
HeatShield Parts & Our Repair-vs-Replace Approach
We use genuine HeatShield Cerfractory Flue Sealant, Joint Repair System, and Smoke Chamber Repair materials on applicable jobs. The proprietary foam application and refractory bonding in HeatShield products are not something generic castable cement can replicate. Off-the-shelf refractory mortar doesn’t have the same expansion characteristics or adhesion profile, and it fails early. We’d rather spend a little more on the right material and guarantee the work for a year.
We stock HeatShield materials locally for fast turnaround on most Marietta jobs – typically no waiting on a special order. If a flue’s structural integrity is beyond what HeatShield can cover – cracked ft. tiles, a detached collar, or a collapse in progress – we’ll tell you plainly. A stainless liner or partial rebuild is sometimes the honest answer, and we’ll show you the camera footage that supports it. You’ll never be pushed into a resurfacing that won’t hold. Call (762) 249-4619 and we’ll talk through what your chimney actually needs.
Our HeatShield Service Process – Step by Step
- 1
Camera inspection and diagnosis. A level 2 camera goes down the flue. You see what we see – the spalled tiles, the open mortar joints, the smoke chamber gaps. We identify whether HeatShield is the right service for the damage we find.
- 2
Surface preparation. This is where failed HeatShield jobs go wrong, so we don’t skip it. We remove the chimney cap, run a rotary whip and flue brush system to strip creosote and soot down to the terracotta surface, and verify the substrate is clean enough for a mechanical bond.
- 3
HeatShield application. We load the proprietary applicator gun with the correct Cerfractory material for the job – sealant, joint repair, or smoke chamber coating – and apply it in a continuous bead or full-coverage pass per HeatShield’s specifications. Cure time varies by product; we schedule around it, typically 24 hours for joints.
- 4
Draft and leak testing. After curing, we test the flue for leakage and proper draft. On the 1972 rancher off Roswell Road where we ran the Joint Repair System last week, the camera showed daylight through the old joints. After filling all 14 feet with Cerfractory foam and a full cure, the draft test showed zero leakage – and the homeowner’s energy bill dropped that season.
- 5
Written warranty and photo documentation. You get a written guarantee covering the repair for 365 days, plus before-and-after photos of the flue. If the repair fails within the year, we return and fix it at no charge.
See the difference
Before
After
Before
After
Before
AfterHeatShield Products We Service & Install in Marietta
Our team works with the full HeatShield product line. The Cerfractory Flue Sealant handles spalled tile surfaces and general flue deterioration. The Joint Repair System seals eroded mortar joints and prevents gas leakage between flue sections. The Rebuild Mortar restores structural integrity in select areas. The Smoke Chamber Repair System is built specifically for corbelled brick chambers where standard parging fails. We stock these materials locally and apply them throughout Marietta and nearby areas – from Whitlock Avenue historic homes to 1970s ranchers near Roswell Road to newer prefab builds east of I-75, and we also offer Heatshield service in Mableton.
We Also Service These Brands
While Chimney Sweep services and HeatShield are specialties we know deeply, we’re not tied to a single product. Hadley Chimney Marietta works with DuraFlex flexible liner systems, Gelco chimney materials, and other trade brands as the job requires. Our recommendation is always based on what the camera shows, not what’s left on the truck.
FAQs – HeatShield Chimney Cleaning Service in Marietta
No. We are an independent chimney service provider in Marietta that uses HeatShield materials because we’ve seen them perform well in our climate. We are not a manufacturer-authorized dealer or installer, and we don’t claim to be. What we do claim is hands-on familiarity – hundreds of HeatShield resurfacing and repair jobs a year across Cobb County, with the documentation to prove it.
We use genuine HeatShield Cerfractory Flue Sealant, Joint Repair System, and Smoke Chamber Repair materials on every applicable job. The proprietary foam application and refractory bonding aren’t replicated by generic castable cement, so we don’t substitute. When a job requires a different material – like a stainless liner – we’ll show you why and get your approval before switching.
Plan on half a day for the inspection, cleaning, and prep work, then a 24-hour cure time for the Cerfractory before we return to test draft and close out the job. Smoke chamber repairs can run longer depending on access. We’ll give you a specific timeline when we see the flue.
We service and install the full HeatShield product line: Cerfractory Flue Sealant, Joint Repair System, Rebuild Mortar, and Smoke Chamber Repair System. If you have a HeatShield application from another provider that’s failing – peeling, flaking, showing daylight – we can re-coat it, but only after we strip and prep the surface correctly.
It shouldn’t, because we follow HeatShield’s surface prep and application specifications. We’re not manufacturer-authorized, but our process aligns with the product’s technical requirements. Every repair we do carries our own 365-Day Done Right Promise – a written guarantee and a free second visit if the repair fails. If you have a manufacturer’s warranty, we’ll help you document the work for your records.
HeatShield chimney cleaning in Marietta typically runs $280 to $460 for a standard sweep and camera inspection, depending on flue height and creosote buildup. HeatShield resurfacing or joint repair starts around $1,800 and goes up based on the number of flue sections, access difficulty, and whether a smoke chamber or crown repair is needed. Every quote is a written price before we start – no surprises at the door. Call (762) 249-4619 for an exact number on your chimney.
Yes. Sweeping removes the bulk creosote, but staining that has permeated the tile surface means the creosote is working into the terracotta. We prep that surface with a rotary whip and cleaning system to strip the residue, then apply Cerfractory Flue Sealant. If you skip the deep prep, the HeatShield coating won’t bond – which is exactly why we don’t skip it.
Look for flaking or peeling Cerfractory inside the flue, a return of draft problems you thought were fixed, or daylight visible through areas that were coated. Most failures trace back to inadequate surface prep before the original application. We’ll run a camera, document what we find, and show you exactly where the bond broke before we quote a re-coat.
It depends on the flue material and condition. HeatShield is designed for masonry chimneys with terracotta flue tiles. If your gas insert is vented through a masonry flue that’s spalling, HeatShield can be a good fix. If the flue was built for wood and you’ve converted to gas without proper liner changes, we’ll talk through the options. Call (762) 249-4619 and we’ll pull the camera out.
Yes. The HeatShield Smoke Chamber Repair System is applied through the firebox opening, no demolition required. We clean the corbelled brick, remove built-up soot and creosote, then spray the Cerfractory coating into the chamber. It seals gaps and voids that standard parging misses. This is one of the most common jobs we do on older Marietta homes, and we also provide HeatShield Chimney Cleaning in Milton, GA.
No. HeatShield is a flue surface repair and sealing system, not a clearance rating modification. It restores the flue’s function by sealing spalls and joints, but it doesn’t change the distance required between the chimney structure and combustible framing. If clearance is your concern, we’ll discuss liner options that address it directly.
Book Your HeatShield Service in Marietta, GA
If your chimney needs HeatShield work – or you’re not sure what it needs – call Hadley Chimney Marietta at (762) 249-4619. A live person answers, we’ll schedule a camera inspection, and you’ll get a written price before any work starts.
Written by Cory Mitchell, Owner at Hadley Chimney Marietta, serving Marietta since 2003.