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 Dallas Homeowners Choose Gelco Chimney Cleaning
We provide independent Gelco chimney cleaning, inspection, and repair service throughout Dallas, and we work on these systems weekly. If you own a home with a Gelco G-1, G-2, Multi-Stack, or Solid-Pack chimney, our crews know the exact failure points these units develop after decades of Texas heat and sudden winter freezes. We are not a Gelco-authorized dealer, and we do not pretend to be one. We are an independent Gelco in Dallas chimney service that carries the aftermarket components and multi-flue cap hardware older Gelco flues actually need, which means our focus stays on keeping your existing chimney serviceable rather than selling you a rebuild you may not need.
Call us at (361) 264-4483 and a live person answers, day or night.
Why Trust Alcott Chimney Dallas for Your Gelco Chimney Cleaning?
Ruben Castellano has spent years on Dallas rooftops, and he has seen what this climate does to Gelco in Garland and Dallas chimneys. Before that, he learned the trade in Southern California, where the weather is a lot kinder to masonry and metal. That matters, because Dallas is harder on chimney systems than almost anywhere else in the country. Hot, humid summers bake flue tile mortar. Winter ice storms freeze any water that found its way into small cracks. The repeated expansion and contraction works joints loose, and that is when Gelco chimneys start showing problems.
Our technicians are background-checked, identity-verified, and you will know their name and see their photo before they arrive. They carry the right rotary whips, chemical treatments, and stainless replacement hardware to service Gelco G-1, G-2, Multi-Stack, and Solid-Pack systems without jury-rigging anything. Written price before any work starts. Written guarantee on every repair. If the repair fails within the coverage period, the second visit is free.
Tell you what’s there, tell you what it costs, do the work – that’s the whole job.
Styles & brands we work with
Common Gelco Chimney Cleaning Problems We Fix in Dallas
- Hairline cracking along Gelco flue tile mortar joints. This is the most common thing we find in Dallas, especially on G-1 and G-2 systems that have been through a few decades of thermal cycling. One 95-degree summer pushes mortar to its expansion limit; a January freeze contracts it fast. The joints crack. Left alone, those cracks become gas pathways into the house.
- Spalling on Gelco concrete crowns with missing or poorly pitched weep screed. Water sits instead of draining. Concrete breaks off in chips. In Lakewood and East Dallas, where many original brick chimneys are now capped with older Gelco crowns, the first hard freeze is when the real breakage happens. You will see small concrete fragments on the roof or in the yard.
- Creosote packed inside Gelco solid-pack sections. We see this on 1980s North Dallas split-levels and ranch homes more than anywhere else. The tee cleanout gets restricted by years of ash and debris, airflow drops, and creosote in Dallas can harden into a tar-like glaze. It clings to the walls and becomes a real chimney fire risk in winter.
- Corroded fasteners on Gelco stainless multi-flue caps. The stainless cap holds up, but the original fasteners often do not. When those go, the cap loosens. Birds and squirrels get in. You will hear scratching in the flue, or you will smell something that is not supposed to be there.
- Damper seizure in G-1 and G-2 fireplaces. The damper plate warps or rusts after enough humid summers. It gets stuck either open or shut. A stuck open damper pours conditioned air out of the house all summer. A stuck shut one makes wood burning impossible and pushes smoke back into the room.
Gelco Parts & Our Repair-vs-Replace Approach
We use OEM Gelco caps and damper components when a customer already has a matching Gelco unit in good structural shape. Otherwise, we install quality aftermarket stainless caps, flue tiles, and dampers that match the same dimensions. The goal is a working chimney, not brand loyalty at any cost.
Our rule is simple on the repair-versus-replace decision. If the flue liner and firebox are structurally intact, we repair. We replace individual flue tiles, patch crowns with proper weep screed, and swap corroded fasteners for stainless. If spalling or mortar loss exceeds about one-third of the stack, we say so plainly and recommend selective demolition and rebuild. That is the honest line, and we hold it even when a rebuild would be more profitable.
Call (361) 264-4483 for an exact quote on your Gelco chimney. Estimates are free.
Our Gelco Service Process – Step by Step
- 1
Diagnosis. We inspect the full Gelco system: crown, cap, flue tiles, smoke chamber, firebox, and tee cleanout. We document what we find with photos and show you the condition before we recommend anything.
- 2
Repair or cleaning. For sweeping, we use a rotary whip appropriate for your Gelco flue geometry, followed by a chemical treatment for glazed creosote when needed. For cracked Gelco flue tiles, we remove and replace the damaged sections and repoint the mortar joints.
- 3
Test. We confirm draft and airflow at the damper and tee cleanout. On Multi-Stack systems, we verify each flue draws independently. On crown repairs, we water-test the slope.
- 4
Warranty. Every repair is in writing, and it covers the parts and labor for the coverage period. If anything fails, your second visit is free.
See the difference
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After
Before
After
Before
AfterGelco Products We Service & Install in Dallas
We service the full range of Gelco residential chimney systems installed across Gelco in Grand Prairie, Dallas, and surrounding areas: Gelco G-1 Chimney Series, Gelco G-2 Chimney Series, Gelco Multi-Stack Chimney Systems, and Gelco Solid-Pack Chimney Sections. We keep the common aftermarket stainless multi-flue caps, flue tile sizes, damper blades, and top-sealing damper kits stocked locally for faster turnaround during Dallas’s busy pre-winter sweep season. For parts we do not have on the truck, we can usually source them the same week.
We Also Service These Brands
Most Dallas chimneys are not exclusively any one brand, and neither are we. Alongside Gelco, our crews regularly work with DuraFlex liner systems and HeatShield resurfacing products. That multi-brand experience helps us spot compatibility issues and choose the right repair material for your specific chimney. We carry and install materials chimney professionals specify, not box-store substitutes.
FAQs – Gelco Chimney Cleaning Service in Dallas
Because a cap does not stop a crown problem. If the concrete crown has a missing or incorrectly pitched weep screed, water pools against the flue tile and works down through hairline cracks in the mortar. The cap keeps direct rain out, but it cannot redirect water that is already sitting on the crown. We repair those crowns by re-pouring them with proper pitch and installing the weep screed the original Gelco install sometimes lacked.
Any visible glazed creosote is too much. A thin, flaky, dark dust that brushes off easily is normal after a season of regular wood burning. But when that residue hardens into a shiny, tar-like glaze, it means the flue is not drafting hot enough, often because the tee cleanout is restricted or the fireplace damper is not fully open. That glazed creosote is combustible. If you are seeing it, call (361) 264-4483 and we will take a camera look and clear the passage.
Yes, in most cases. We replaced a single cracked flue tile on a Gelco Multi-Stack system in a 1980s North Dallas split-level not long ago. The upper tile had cracked at the third joint while the lower section was packed with tar-like creosote. We removed the glaze with a rotary whip and chemical treatment, replaced the cracked tile, and set a new stainless multi-flue cap with stainless fasteners. The next inspection showed the flue drawing correctly and the cap still secure. We do this routinely.
Corrosion on the original carbon-steel fasteners. Gelco stainless caps often outlast the fasteners that hold them. Once those rust, the cap shifts, and gaps open wide enough for starlings and squirrels. We replace the old fasteners with stainless hardware and re-anchor the cap. If the cap itself is still sound, you do not need a new one. Call (361) 264-4483 and we will tell you which one it is before you spend anything.
If the fireplace was converted from wood, yes. The flue and firebox were built to handle a wood fire, not just decorative gas logs. A Level 2 inspection covers the flue interior and the exterior clearances, which is exactly what you want before trusting an older Gelco system with gas. Gas log fires burn cooler and produce more moisture in the flue, and that moisture can accelerate existing mortar wear in Dallas. We inspect what is actually there, show you the photos, and tell you what can wait.
A standard our Chimney Sweep services for Gelco in Dallas typically costs $189 to $349 before any repairs, depending on the level of creosote accumulation, the flue length, and whether a chemical glaze treatment is needed. Repairs are quoted separately after the camera inspection. Call (361) 264-4483 for an exact quote on your system. The estimate is free.
Book Your Gelco Service in Dallas, TX
If you own a home in Dallas with a Gelco chimney, and you want someone who knows exactly what can go wrong with it and how to fix it without overselling, call us at (361) 264-4483. A live person answers. You will get a written price before any work starts, and you will know the name and face of the technician before they knock.
Written by Ruben Castellano, Owner at Alcott Chimney Dallas, serving Dallas homeowners since 2002.