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.
Gelco Chimney Sweep in Marietta: What to Know First
We provide independent Gelco chimney sweep and inspection services in Marietta, typically completing a full sweep and Level 1 inspection the same week you call. A Gelco fireplace sweep in this market usually runs $189 – $289 depending on the unit and how long it’s been since the last cleaning. This page is for Marietta homeowners who own a Gelco prefab fireplace or chimney system, want to know what their unit actually needs, and would rather see photo evidence than take someone’s word for it. If that sounds right, call (762) 249-4619 and you’ll get a live person, not a voicemail tree.
How Gelco Products Fail – and How We Fix Them
Gelco is a brand we see regularly in Marietta homes, especially in neighborhoods built from the early 90s through the mid-2000s. Their prefab chimney systems are generally solid, but like any factory-built unit, they have predictable weak points. Here’s what we actually find on Gelco jobs in Cobb County.
- Gelco’s air-cooled chimney pipe develops creosote faster in short, hot burns. We see this most often on Gelco SC and SK series pipe. Marietta homeowners who burn occasional fires rather than long, steady ones create more cool smoke, which condenses inside that air-cooled pipe faster than a masonry chimney would. The fix is a proper mechanical sweep with poly brushes rated for factory-built flues, never wire brushes, which can scar the thin inner wall of Gelco pipe. We sweep the flue, then send a camera up to confirm the walls are clean.
- The factory chase top on older Gelco installs fails at the seam before the pipe does. Chase tops rust out faster than homeowners expect, especially with Marietta’s summer humidity and afternoon thunderstorms. When that top pan leaks, water runs down the outside of the Gelco pipe and into the firebox, and the homeowner often mistakes the resulting staining for a chimney fire. During a sweep we check the chase top and take a photo of any rust-through or missing sealant so you can see exactly what’s going on.
- Gelco’s refractory firebox panels crack at the seams and nobody notices until we point it out. These are the preformed panels that line the firebox. On Gelco units from the 2003 to 2012 era we regularly find hairline cracks at the panel joints. The cause is repeated heating and cooling. The risk is heat reaching the metal firebox shell behind the panel. During a sweep and inspection we document any cracks with photos and mark them with a measurement so we can track if they’ve grown by the next annual visit.
- The gel (yes, Gelco originally stood for gel-coated) finish on older surrounds and doors clouds over time. This is cosmetic, not structural, and we’ll tell you that plainly. But it’s also often the thing that pushes a homeowner to ask about replacement versus repair. On a sweep visit we can assess whether the fireplace itself is still sound and worth cleaning, which tells you whether putting any more money into a surround is actually justified.
- Gelco’s damper assemblies are tighter than most and they collect soot in the track. If your damper has gotten stiff or won’t fully close, that’s usually soot and creosote buildup in the slide channel, not a bent damper. We clean the track as part of a sweep and lubricate it with a dry graphite product, which restores the motion without the mess of a wet lubricant that would just attract more soot.
Styles & brands we work with





Our Gelco Chimney Sweep Process
Here’s what happens when you book a Gelco sweep with us in Marietta, start to finish.
- 1
You call, a person answers. You’ll talk to a live human who gets your address, your Gelco model if you know it, and a sense of what you’re seeing, so the tech arrives with the right equipment and parts. No four-hour window guessing.
- 2
We arrive, you get a written price before any work begins. The tech inspects the fireplace, the flue, and the exterior termination. Then he writes up a fixed price for the sweep and any needed repair. Nothing starts until you approve it.
- 3
The sweep is done with poly brushes and a HEPA-rated vacuum. Factory-built flues like Gelco’s require non-abrasive tools. We set up drop cloths, seal off the firebox opening, and run a HEPA vacuum the whole time, so no soot cloud settles on your furniture.
- 4
A camera goes up the flue, always. After the sweep, we run an inspection camera from the firebox to the top cap. You see the result, not just hear about it. If there’s a cracked panel, a rusted chase top, or a blocked termination, you’ll have a photo.
- 5
We review the photos with you and write up any recommendations honestly. If the flue is clean and the unit is safe, we say so. If something can wait a year, we say that too. If something needs attention, you’ll see why in the photo. You decide.
- 6
You get a digital invoice, a written guarantee on any work we did, and photos from the job. Pay from your phone. If any repair we made fails within 365 days, we come back free and fix it.
See the difference
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After
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AfterWhat Gelco Chimney Sweep Costs in Marietta
Here’s the honest price picture for Gelco work in the Marietta area, based on what we’ve seen across Cobb County and up toward Kennesaw and East Cobb.
| Service | Typical Marietta Price | What Affects It |
|---|---|---|
| Gelco fireplace sweep + Level 1 inspection | $189 – $289 | How long since last sweep, firebox size, damper condition |
| Level 2 inspection (adds camera + roof/exterior review) | $100 – $175 add-on | Access difficulty, single vs multi-flue |
| Firebox panel crack repair | $250 – $650 per panel | Panel size, refractory vs ceramic fiber, whether we can source an aftermarket panel that fits |
| Chase top replacement on Gelco pipe | $400 – $900 | Chase size, whether the flashing is reusable, custom vs stock |
| Damper assembly cleanup + graphite lubrication | $75 – $150 | Access, degree of buildup |
What moves these numbers most is whether your Gelco unit needs parts. We’ll always present the OEM option and a quality aftermarket option side by side when both exist, with the trade-offs spelled out. Some aftermarket suppliers manufacture panels that outperform the original Gelco refractory material, and we’ll tell you when that’s the case. Estimates are free, the price is fixed before work starts, and you’ll never be surprised at the door. Call (762) 249-4619 for an exact quote on your Gelco unit.
Why Marietta Homeowners Call Hadley Chimney Marietta for Gelco Work
We’re an independent Gelco service provider, which means two things: we’re not on Gelco’s payroll pushing new units, and we know where Gelco products fail, because we’re the ones fixing them. Marietta homeowners deal with humidity-driven rust, rainy-season leaks, and short-burn creosote buildup. Our techs have been working Gelco installs in this market for years, from newer spec homes off Barrett Parkway to older ranches in East Cobb. We stock common Gelco-spec parts on the truck, and when a fix calls for a liner or reseal, we reach for materials from DuraFlex and HeatShield, brands the trade actually trusts for factory-built systems. Every Gelco job we do gets the same treatment: a live arrival window, before-and-after photos, a written price before work starts, and the 365-Day Done Right Promise on any repair. That’s The Relay Standard, and it applies whether we’re sweeping a Gelco fireplace for the first time or the fifteenth.
FAQs
No. Gelco factory warranties generally require that you maintain the fireplace through annual cleaning and inspection, not that you use any specific sweeping company. As an independent Gelco service provider, we follow factory-built chimney standards and use only non-invasive poly brushes, so there’s no risk to your warranty from the sweep itself. The bigger risk to a Gelco warranty is neglect, because damage from accumulated creosote is typically excluded as a maintenance failure. If you want to know your unit’s warranty status before booking, call (762) 249-4619 and we’ll help you figure out what still applies.
Once a year is the right cadence for most Gelco owners in this climate, even if you only burn occasionally. Marietta’s humidity and seasonal temperature swings mean moisture condenses inside the flue even when the fireplace sits idle, and that moisture bonds soot and creosote to the flue walls. If you burn fires more than once a week during the winter, every 8 to 10 months is safer. We’ll put you on an annual reminder and you’ll get the same photo-documented sweep every visit.
In most cases the panels can be replaced individually without touching the rest of the unit. Cracked refractory panels don’t automatically mean the fireplace is dead, but they do need to be addressed before you burn again, because heat reaching the metal firebox shell can warp it permanently. We’ll show you a photo of the crack, measure it, and quote both the panel replacement and, if the damage has spread to the firebox shell, what a full firebox rebuild would cost. Many Gelco units we sweep only need the panels replaced. Call (762) 249-4619 and we’ll tell you which direction your fireplace is actually heading.
We service the full range of Gelco prefab fireplaces and chimney systems, including the SC and SK pipe series, the gel-coated surround models from the early 2000s, and the newer factory-built fireplaces installed in Marietta developments over the last decade. If you don’t know your model, the data plate is usually on a metal tag inside the lower grille or along the door frame, and we can read it when we arrive. If you have the model number handy when you call, that helps us bring the right equipment.
Most Gelco sweep appointments in Marietta are booked within 3 to 5 business days, and we’ll give you a live arrival window, not a four-hour guessing range. During our busy season from October through January, book a little further out. If you’re seeing smoke backing up into the room or you smell something acrid when the fireplace is running, tell the person on the phone and we’ll find the next available opening. Call (762) 249-4619 and we’ll get you scheduled.
Written by Cory Mitchell, Owner, Hadley Chimney Marietta at Hadley Chimney Marietta, serving Marietta and nearby areas.