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 Cleaning in Highland Park, TX | Level Two Chimney Dallas
Gelco chimney cleaning and repair in Highland Park typically runs $180-$340 for a standard sweep with Level 2 camera inspection, and most appointments are scheduled within a few days. What makes our Gelco work here different is the housing stock: Highland Park’s 1920s-1940s estates weren’t built for modern prefab systems, and the Gelco hardware in these homes - top-sealing dampers, glass door sets, retrofit gas log burners - ages differently in century-old masonry than it does anywhere else in Dallas County. We work on Gelco units as an independent Gelco sales & service provider, not a factory-authorized shop, which means we fix what can be fixed and replace only what’s actually failed. Call (972) 284-1392 for a written estimate before any work starts.
Why Highland Park Residents Choose Us for Gelco Service
We’ve been working Gelco hardware in Highland Park long enough to know the difference between a damper that needs a new gasket and one whose frame is warped beyond saving. Corrine Halstead, our owner, learned the trade at Apex Technical School in Long Island City before bringing that training to Texas, and she’s built a crew that treats every Highland Park service area job the same way: camera goes in first, everything else follows.
That means we document what we find with a photo record, give you a written price before anyone touches a tool, and back the work with our 365-Day Done Right Promise. We’re not affiliated with Gelco’s factory. We’re independently owned and operated under the Haven Standard, and we source aftermarket dampers, gaskets, and door hardware that match Gelco dimensions from our buying network - DuraFlex, HeatShield, Olympia Chimney, Famco, Copperfield - plus OEM Gelco parts when you want them and they’re available. Background-checked, uniformed technicians. License number on the page. A text when we’re on the way. Live person answering the phone, 24/7.
Common Gelco Chimney Cleaning Problems We Solve in Highland Park

- Top-sealing damper gaskets and linkage corroding from freeze-thaw cycling. Highland Park’s rapid temperature swings - hard freeze one morning, 60 degrees by afternoon - repeatedly stress Gelco damper gaskets and cable housings. The seal fails. Cold air and moisture pour into an unused firebox. We replace the gasket and cable, free the linkage, and test the seal under draft.
- Glass door frames pitting and hinge screws pulling from spalled lime mortar. The original lime-based mortar in Highland Park’s 1920s-1940s Tudor Revival and Georgian homes is actively spalling after decades of North Texas freeze-thaw. Gelco door frames were mounted into brick that is now crumbling behind them. We repoint with compatible mortar and reinstall, or relocate fasteners into sound masonry.
- Gas log retrofit burners in unlined or improperly lined flues. The 1980s-1990s wave of gas log inserts into original wood-burning Gelco fireboxes left many Highland Park chimneys venting gas appliances through clay tile never meant for acidic flue gas. Heat and condensation attack the tile and mortar joints. We run a camera to assess liner condition before touching the burner hardware.
- Debris and animal nesting jamming top-sealing damper cables. Chimneys that sit unused through multiple mild Dallas winters become habitat. Squirrels, birds, and accumulated leaf litter seize Gelco cable mechanisms. Our sweep includes full flue cleaning and a camera scan to confirm the damper operates freely before we close the job.
- Multi-flue chimney cross-drafting between unused and active flues. Highland Park’s larger estates often have two to four fireplaces sharing a chimney structure. A failed Gelco damper on an unused flue becomes a cold air return, pulling smoke and carbon monoxide from the active flue next to it. We inspect every flue in the structure, not just the one you use.
Before
AfterGelco Service in Highland Park: What Local Conditions Mean for Your Equipment
Highland Park runs its own municipal building department separate from Dallas. Any Gelco damper or firebox repair that rises to structural chimney work - relining, rebuilding a firebox, replacing a lintel - has to clear Highland Park’s inspection process, not Dallas’s. We’ve seen out-of-town crews pull Dallas permits or skip permitting entirely, leaving homeowners with unpermitted work on multi-million-dollar properties and no documentation for resale or insurance. We know the Chimney Repair in Highland Park permitting route because we’ve filed there. On a 1930s Georgian Revival estate off Lexington Avenue, we serviced a Gelco top-sealing damper whose cable had seized and whose gasket had cracked after years of freeze-thaw cycling on an unused firebox. We freed the linkage, replaced the gasket and cable, repointed the spalled lime mortar at the firebox face behind the Gelco doors, and confirmed the flue was clear of the debris the open gap had let in. The homeowner now has a damper that seals and a firebox that will hold up through the next hard freeze. That job required no structural permit, but we documented everything - photos, written scope, written warranty - under Haven Standard Clause 4, the same way we handle every visit since 2009.
Gelco Models & Products We Service in Highland Park

We work on the full range of Gelco hardware found in Highland Park’s older homes: top-sealing damper units with their cable-and-linkage systems; glass fireplace door sets and bi-fold enclosures in brass, black, and brushed finishes; masonry firebox and lintel assemblies; and the gas log set and burner hardware from the 1980s-1990s retrofit wave. Our Highland Park stock includes aftermarket dampers and gaskets dimensioned to Gelco specs, plus door hardware, hinges, and tempered glass panels. OEM Gelco parts are available by order when you specifically want factory components. We don’t push replacement on a structurally sound firebox. If the frame, pan, or linkage can be repaired, we repair it and show you the photos.
Gelco Service Pricing in Highland Park
Standard Highland Park Chimney Cleaning & Sweep with NFPA 211 Level 2 camera inspection: $180-$240. Gelco damper repair or gasket replacement: $220-$340. Glass door reinstallation with mortar repointing: $280-$450. Gas log burner service and flue assessment: $240-$380. Full firebox or lintel work requiring Highland Park permitting is quoted individually after inspection. Every estimate is free, written, and delivered before work starts - Haven Standard Clause 1, no exceptions. The price you see is the price you pay. Call (972) 284-1392 for an exact quote on your Gelco system.
Serving Highland Park, TX - Our Local Coverage Area

We’re based in the Highland Park area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Gelco Chimney Cleaning in Highland Park
Most Gelco top-sealing dampers can be repaired. We replace the gasket, free the linkage, and swap the cable if it’s seized. We only recommend full damper replacement when the frame or pan is warped or cracked beyond sealing. Call (972) 284-1392 and we’ll inspect it - estimates are free.
If the work is structural - rebuilding a firebox, replacing a lintel, relining a flue - yes, Highland Park requires its own permit, separate from Dallas. Routine damper gasket replacement, sweep, and door reinstallation typically don’t trigger permitting. We handle the filing when it’s needed and never leave you with unpermitted work.
Yes. We service the burner, valve, and pilot assembly. We also run a camera to verify your original clay tile liner is rated for gas venting - many Highland Park retrofits weren’t lined properly, and that’s a safety issue we flag before touching the gas hardware. Call (972) 284-1392 to schedule.
Spalling lime mortar behind the frame. Highland Park’s original 1920s-1940s brick was laid with lime-based mortar that degrades faster than Portland cement in freeze-thaw cycles. The screws lose purchase. We repoint with compatible mortar and reinstall, or relocate fasteners into sound masonry. Call (972) 284-1392 for a free assessment.
Yes. Infrequent use is actually riskier in Highland Park’s climate. Unused flues collect debris and moisture. Freeze-thaw degrades mortar whether you burn or not. And that rare cold night when you do light a fire is exactly when a blocked or damaged flue becomes dangerous. Annual inspection catches what idle seasons hide. Call (972) 284-1392 to book.
Service Areas Near Highland Park

We run Gelco service throughout the inner Dallas corridor, including Gelco service in Dallas proper, Gelco service in Mesquite to the east, plus regular appointments in Garland, Irving, and Richardson. Highland Park remains a distinct market for us because of its housing age, its separate permitting, and the concentration of multi-flue estates our crew knows block by block.
Book Your Gelco Service in Highland Park Today
Call (972) 284-1392 to schedule your Gelco chimney cleaning or repair. We’ll send a background-checked, uniformed technician with a camera, deliver a written price before any work starts, and leave you with a documented photo record of what we found and what we fixed. The 365-Day Done Right Promise applies to every job.
Written by Corrine Halstead, Owner at Level Two Chimney Dallas, serving Highland Park since 2009.





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