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 Denton, TX | Emberly Chimney Cleaners Denton
We provide independent Gelco chimney service across Denton, TX, with Level 2 camera inspections and written pricing before any work begins. What sets our Gelco work apart in this market is our experience with Denton’s aging rental housing stock near UNT, where original clay-tile liners often go decades without inspection between tenant turnovers. Call (940) 373-6912 for a free estimate with a written price and photo documentation guaranteed.
Why Denton Residents Choose Us for Gelco Service
We’ve provided our Chimney Sweep in Denton since 2009, including a stretch of older wood-burning fireplaces near the historic Denton Square where creosote buildup runs heavier than most homeowners expect. Corrine Halstead, our owner, learned the trade at Apex Technical School in Manhattan and spent nearly two decades on flues and fireplaces before putting down roots here. She and our crew have handled Gelco systems in everything from 1930s bungalows to newer direct-vent installs on Denton’s north edge.
We’re an independent Gelco service provider, not manufacturer-affiliated. That means no corporate pricing tiers, no mandated part markups, and no waiting on factory authorization when your chimney needs attention before the next cold snap. Our technicians carry OEM-compatible Gelco parts and high-quality aftermarket alternatives that meet or exceed spec. Every job starts with a written price, a written scope, and a written warranty under the Haven Standard. Clause 4 requires a documented photo record on every visit, a practice we started in 2009 and have maintained on all 38,000-plus chimneys we’ve serviced since. The camera doesn’t guess, and neither do we.
Background-checked, uniformed technicians. License number on every page. A text when your tech is en route. Live phone support, 24 hours a day.
Common Gelco Chimney Cleaning Problems We Solve in Denton

- Cracked or spalling Gelco clay tile liners from freeze-thaw cycles. Denton’s position on the northern DFW fringe brings more freezing precipitation and blue norther cold snaps than Dallas proper. When a long idle period ends with a hard freeze, moisture trapped in clay tiles expands rapidly. We find this in the Oak-Hickory Historic District and surrounding UNT neighborhoods, where 1940s-1960s masonry chimneys were built with original Gelco clay-tile liners that have cycled through thousands of wet-dry and freeze-thaw events.
- Corroded Gelco stainless steel liner seams from prolonged moisture exposure. Denton’s mild winters mean many wood-burning fireplaces sit unused for multiple years. During those idle periods, condensation accumulates in stainless steel liner seams. When the fireplace finally runs for a prolonged burn during a February cold snap, the compromised seam vents flue gases into wall cavities. Our Level 2 camera inspection catches this before it becomes a carbon monoxide issue.
- Damaged Gelco chimney caps from hail and wind debris. North Texas spring storms throw hail and tree limbs at chimney caps with regularity. A dented or displaced Gelco cap admits water directly onto the crown, accelerating deterioration during Denton’s hot, humid summers. We stock replacement Gelco caps and compatible aftermarket options for same-visit installation when the damage is caught early.
- Settled or missing mortar joints hidden behind walls. In the rental homes surrounding UNT, clay-tile flue liners often have mortar joints that have settled or washed out over decades. These gaps are invisible from the roofline but vent combustion gases into wall cavities. Our camera scan documents the condition; our repointing work seals it. This is not a hypothetical hazard, we’ve found it in active student rentals where the fireplace was in use the week before we arrived.
- Heavy Class III creosote glazing from low-frequency, high-intensity usage. Denton residents who burn only during hard freezes tend to build glazed creosote rather than the powdery Class I variety. Class III creosote is a solid, tar-like deposit that requires mechanical removal. It burns at lower temperatures and with more energy than ordinary soot, making it the most dangerous form of chimney fuel. We remove it with rotary sweeping equipment, not a brush and a prayer.
Before
AfterGelco Service in Denton: What Local Conditions Mean for Your Equipment
Denton’s large concentration of aging rental homes surrounding the University of North Texas, many built in the 1940s-1960s with original masonry chimneys, means the city carries an outsized stock of fireplaces that go uncleaned for years between student-tenant turnovers. When a hard freeze hits, as in February 2021’s Winter Storm Uri, landlords and renters rush to light fires in chimneys packed with debris, nesting material, and years of creosote, creating acute fire and carbon-monoxide risk that is directly tied to Denton’s university-town rental economy.
For Gelco equipment specifically, this rental pattern is punishing. Original Gelco clay-tile liners in these properties have often never been inspected since the home converted from owner-occupancy to student housing, sometimes decades ago. The low-frequency, high-intensity usage pattern, burn only during freezes, then ignore for two years, accelerates moisture-related deterioration of chimney crowns and flashing during long idle periods, then causes rapid creosote staging when the fireplace is finally used in a prolonged freeze. In the Oak-Hickory Historic District, we serviced a 1950s craftsman bungalow rental where students had used the fireplace during a cold snap. Our tech found a Gelco clay tile liner with multiple cracked tiles and heavy creosote buildup; after a Level 2 inspection and mechanical sweeping, we performed Chimney Repair in Denton, repointing the mortar joints and installing a new Gelco cap to prevent water entry. The landlord had owned the property for eight years and had never had the chimney inspected. The camera footage showed him why that mattered.
Gelco Models & Products We Service in Denton

We work on Gelco Stainless Steel Liner Kits, Gelco Clay Tile Liners, Gelco Chimney Caps, and Gelco Fireplace Inserts throughout the Denton service area. Our technicians understand the fit tolerances, expansion characteristics, and common failure modes of each product line.
We source OEM Gelco parts when available to ensure proper fit and performance. When OEM parts are discontinued or cost-prohibitive, we use high-quality aftermarket components from DuraFlex, HeatShield, Olympia Chimney, Famco, and Copperfield, procured through Haven’s buying network to keep customer prices honest. We stock common Gelco caps, liner sections, and sealants locally for fast Denton turnaround. Every repair-versus-replace assessment is delivered in writing with photo evidence, not a verbal recommendation you have to trust.
For Gelco sales & service questions or to check parts availability for your specific model, call (940) 373-6912.
Gelco Service Pricing in Denton
We publish our pricing because a written price before work starts is the entire point of how we operate. Haven Standard Clause 1 requires it on every job, no exceptions.
| Service | Price Range in Denton |
|---|---|
| Level 2 Chimney Inspection with Camera Scan | $189 - $249 |
| Gelco Chimney Sweep / Creosote Removal | $159 - $229 |
| Inspection + Sweep Bundle | $299 - $389 |
| Gelco Chimney Cap Replacement (installed) | $245 - $495 |
| Mortar Repointing (localized joint repair) | $350 - $750 |
| Gelco Stainless Steel Liner Repair / Section Replacement | $850 - $2,400 |
What drives cost: accessibility (roof pitch, chimney height), creosote class and thickness, extent of liner damage, and whether the work requires scaffold or specialized equipment. Every estimate includes the camera inspection and photo report at no additional charge. We do not quote over the phone for repair work, we inspect first, show you the footage, then deliver a written price. For an exact quote on your Gelco system, call (940) 373-6912, estimates are free.
Serving Denton, TX - Our Local Coverage Area

We’re based in the Denton 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 Denton
No. We are an independent Gelco service provider in Denton, not affiliated with the manufacturer. Our technicians specialize in Gelco systems through hands-on field experience, not factory certification. We use OEM-compatible and aftermarket parts that meet or exceed manufacturer specifications. For warranty claims or factory-authorized service, contact Gelco directly. For honest inspection, cleaning, and repair by technicians who know these systems in Denton conditions, call (940) 373-6912.
The NFPA 211 standard recommends annual inspection for all chimney systems. In Denton, we push harder for annual checks on properties near UNT with original clay-tile liners, where decades of tenant turnover often mean no inspection history exists. The freeze-thaw exposure on Denton’s northern fringe accelerates liner deterioration compared to milder climates. Call (940) 373-6912 to schedule your Level 2 inspection, estimates are free.
Flakes of clay tile in the firebox, visible cracks when looking up the flue, unexplained smoke odor in upper rooms, or a sudden draft problem after a hard freeze. In Denton’s rental market, the most common sign is no sign at all, the damage is hidden behind walls until a camera finds it. We document everything with photo evidence under Haven Standard Clause 4. If you suspect liner damage, call (940) 373-6912 for an inspection.
Sometimes. Hairline cracks and localized spalling can often be addressed with HeatShield refractory sealant or mechanical repointing of mortar joints. If the tile is shattered, displaced, or the flue is out of round, replacement is the only safe option. We show you the camera footage, explain the repair threshold, and give you a written price for both paths when both are viable. No work starts until you have the number in writing.
North Texas hail dents and displaces caps, admitting water that destroys the crown beneath. Denton’s hot summers then bake the moisture into the masonry, accelerating spalling. A compromised cap in this climate is not a slow leak, it’s a crown destroyer within two to three seasons. We stock Gelco caps and compatible replacements for same-visit installation when the inspection catches it early. Call (940) 373-6912 to check cap condition, estimates are free.
Yes. We regularly inspect and clean Gelco systems in rental properties around the University of North Texas, including historic homes converted to multi-tenant housing. We coordinate with landlords or property managers, provide documented photo records for lease files, and flag code and safety issues that affect insurability. Our background-checked technicians carry license information and text when en route, so tenants know who’s arriving. Call (940) 373-6912 to schedule.
Service Areas Near Denton

We serve Denton and surrounding communities including Gelco service in Krum, Gelco service in Corinth, Lantana, Lake Dallas, and Highland Village. The same Level 2 inspection standard, written pricing, and documented photo record apply in every location.
Book Your Gelco Service in Denton Today
Call (940) 373-6912 to schedule your Gelco chimney inspection and cleaning. A live person answers 24 hours a day. We’ll send a background-checked, uniformed technician with camera equipment, deliver a written price before any work starts, and leave you with a documented photo record under Haven Standard Clause 4. The 365-Day Done Right Promise applies to every job, if it’s not done right, we make it right. Free second opinion on any competitor’s written estimate.
Written by Corrine Halstead, Owner at Emberly Chimney Cleaners Denton, serving Denton since 2009.





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