Level 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 Repair in Marietta: What to Know First
We provide independent Gelco chimney repair in Marietta, typically scheduling within 3-5 business days and delivering a written price before any work starts. Most Gelco repairs run $340-$1,800 depending on whether we’re repointing mortar joints, rebuilding a spalled crown, or replacing compromised flashing. This page is for homeowners who already know they have Gelco components in their chimney system and need straight answers on what’s failing, what it costs, and who can fix it without voiding whatever warranty remains.
Call (470) 288-2763 for a free estimate. We answer live, 24/7.
How Gelco Products Fail - and How We Fix Them
- Gelco Multi-Flue Chimney Caps (Model M-8 through M-13 series): The 304 stainless mesh on these caps fatigues at the weld points after 8-12 years in Marietta’s humidity cycles, especially on homes near Kennesaw Mountain where wind shear accelerates metal stress. We see the mesh separate from the frame and drop into the flue, or the lid tilt after the hinge pin corrodes. We replace with either OEM Gelco caps or, when the flue configuration allows, a Famco equivalent with a heavier 18-gauge lid and stainless hardware that we source through our Haven buying network.
- Gelco Single-Flue Caps with Draft Inducers (B-Series): The integrated wind turbine seizes when grease and creosote bake onto the bearing housing, common in Marietta homes burning seasoned oak from North Georgia suppliers. The symptom is a persistent downdraft on windy days, not a cap that “looks fine” from the ground. We pull the cap, inspect the turbine assembly, and either rebuild with OEM Gelco parts or replace the entire unit if the housing is warped from overheating.
- Gelco Chimney Pots (Tudor and Victorian lines): The terra cotta shell spalls from the inside out when flue gases condense against cold clay during Marietta’s January freeze-thaw cycles. The pot looks intact from the street but sheds flakes into the flue. We document the spalling with camera footage, remove the pot without disturbing surrounding courses, and reinstall with a stainless Gelco base plate or a HeatShield refractory seal if the flue mouth is eroded.
- Gelco Lyemance and Lock-Top Top-Sealing Dampers: The silicone rubber gasket hardens after 6-10 years and loses its seal, especially on south-facing chimneys in East Cobb and Sandy Plains where UV exposure is highest. The homeowner smells smoke on startup or feels cold air dropping the flue. We measure the throat opening precisely, Gelco’s sizing is not interchangeable with Olympia Chimney’s similar units, and install the correct OEM replacement gasket or full damper assembly.
- Gelco Pre-Fab Chimney Chase Covers (galvanized and stainless): The galvanized covers rust through at the drip edge in 4-7 years in Marietta’s acid-rain pattern, faster than the manufacturer rates for drier climates. We replace with 24-gauge stainless Gelco covers or upgrade to Copperfield bonderized steel when the chase width exceeds 48 inches, which Gelco does not stock in standard sizes.
Our Gelco Chimney Repair Process

- 1
Call and schedule. A live person answers, notes your Gelco model if you know it, and books a Level 2 camera inspection. Corrine Halstead or a named, background-checked technician is assigned, and you get a text when they’re en route.
- 2
Camera first, quote second, work third - in that order, every time. We run the camera down the flue, photograph the Gelco component failure, and measure the affected area. No flashlight guesswork.
- 3
Written price and scope. Before any tool touches your chimney, you receive a written price, written scope, and written warranty under Haven Standard Clause 1. If you have a competitor’s written estimate, we’ll give you a free second opinion.
- 4
Parts decision. We stock common Gelco caps, dampers, and gaskets. For obsolete or oversized items, we source through our Haven network from DuraFlex, HeatShield, or Copperfield with equivalent or better specifications, and we tell you when we’re deviating from OEM.
- 5
Repair and test. We complete the work, run a post-repair camera pass to verify the fix, and document with photos under Haven Standard Clause 4.
- 6
Cleanup and record. You get the photo record, the invoice, and the 365-Day Done Right Promise. If it’s not done right, we make it right.
Before
AfterWhat Gelco Chimney Repair Costs in Marietta
| Repair Type | Typical Range | What Moves the Price |
|---|---|---|
| Gelco cap mesh weld repair or replacement | $340-$620 | Flue count, access height, stainless vs. galvanized |
| Gelco top-sealing damper gasket replacement | $380-$740 | Throat size, gasket-only vs. full assembly |
| Gelco chase cover replacement (galvanized to stainless) | $680-$1,200 | Chase dimensions, pitch, custom cutting |
| Gelco chimney pot removal and reseal | $820-$1,400 | Spall depth, flue mouth erosion, scaffolding |
| Gelco cap with integrated damper rebuild | $940-$1,800 | Turbine condition, flue liner compatibility |
These are Marietta-specific ranges based on our 2024-2025 jobs in neighborhoods from Whitlock Avenue to Shallowford Road. Every estimate is free, written, and valid for 30 days. Call (470) 288-2763.
Why Marietta Homeowners Call Emberly Chimney Cleaners Marietta for Gelco Work

We’ve inspected and cleaned more than 38,000 chimneys since 2009, and a meaningful share of those were Gelco systems in Cobb County homes built during the 1990s and 2000s construction waves. Corrine Halstead started with a brush from Apex Technical School in Manhattan and has spent the better part of two decades on Marietta roofs, including plenty of afternoons along Whitlock Avenue where the masonry tells its own story.
We don’t sell you a liner you don’t need. We don’t quote from the driveway. We run the camera, show you the footage, and write down what it costs before we ask for a signature. Our technicians are uniformed, background-checked, and carry their license numbers. If we install a Gelco part and it fails within a year, the 365-Day Done Right Promise covers it. When Gelco OEM isn’t available, we have DuraFlex, HeatShield, and other quality brands in our Haven buying network, procured specifically to keep customer prices honest.
FAQs
No, if the work is done by a competent technician using Gelco OEM or equivalent-spec parts. As an independent Gelco service provider, we document every part number and installation detail so any remaining warranty claim you file with Gelco has the paper trail it needs. Call (470) 288-2763 and we’ll check your cap’s serial and manufacture date.
Stainless Gelco caps last 12-18 years in Marietta’s humidity and UV exposure; galvanized chase covers typically fail in 4-7 years, faster than Gelco’s dry-climate ratings. The freeze-thaw cycles in January and the acid-rain pattern here accelerate corrosion at weld points and drip edges. We see the difference on homes near Kennesaw Mountain versus more sheltered lots in central Marietta.
We stock common Gelco caps, dampers, and gaskets, and we source less common items through our Haven buying network. You don’t order anything. We handle procurement, verify fit against our field measurements, and warranty the installation under our 365-Day Done Right Promise.
Not necessarily. About 40% of stuck Gelco Lyemance and Lock-Top dampers we see in Marietta are gummed with creosote on the pivot pin, not mechanically failed. We free the mechanism, inspect the gasket seal, and replace only what’s actually worn. You’ll see the camera footage before we recommend anything.
Camera inspection tells the difference. Surface spalling on a Gelco chimney pot or localized rust on a chase cover is repairable. Multiple courses of compromised masonry, a shifted flue liner, or a rotted chase structure means rebuild. We show you the footage, explain what you’re seeing, and write separate prices for each scenario so you decide. Call (470) 288-2763 for a free estimate.
Written by Corrine Halstead, Owner, Emberly Chimney Cleaners Marietta at Emberly Chimney Cleaners Marietta, serving Marietta and nearby areas.



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