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 Cap & Crown in McKinney: What to Know First
We provide independent Gelco chimney cap and crown service in McKinney, typically scheduling within three to five business days and delivering a written price before any work starts. Most Gelco cap replacements and crown repairs are completed in a single visit, with the camera inspection and photo record included as standard under Haven Standard Clause 4. We are not affiliated with or authorized by Gelco; we are an independent Gelco service provider who sources parts through Haven’s buying network to keep pricing honest.
This page is for McKinney homeowners who already own a Gelco cap or crown and need repair, replacement, or an honest assessment of whether the work can wait. If you are seeing rust streaks, mortar debris in your firebox, or water stains on the ceiling near your chimney, call (469) 429-2623. The estimate is free, and the written quote comes before any scheduling.
How Gelco Products Fail - and How We Fix Them
- Gelco Ultra-Seal caps: mesh corrosion at the weld points. The 304 stainless mesh on Ultra-Seal units holds up well in dry climates, but McKinney’s spring storm season drives humidity spikes that accelerate galvanic corrosion where the mesh meets the galvanized frame. We see this most often in Stonebridge Ranch and Craig Ranch homes built between 2015 and 2019. Our fix: we document the weld failure with camera footage, then source either an OEM Gelco replacement cap or a DuraFlex equivalent with full 304 stainless construction, depending on your flue configuration and budget.
- Gelco Multi-Flue caps: lid sag on wide-span units. The Multi-Flue line uses a single lid over two or three flues, and the 36-inch and 48-inch spans can develop a subtle bow after five to seven Texas summers. The lid still sheds water, but the gap lets driving rain enter during McKinney’s March and October storm fronts. We measure the sag with a straightedge, show you the photo, and either reinforce the existing lid or replace with a Gelco unit that has the heavier-gauge option.
- Gelco standard galvanized caps: rust-through at the drip edge. These caps are common on builder-grade installations in McKinney’s newer subdivisions like Trinity Falls and Tucker Hill. The galvanized coating lasts roughly six to eight years in our clay-heavy soil environment, which seems counterintuitive until you realize the alkaline runoff from concrete tile roofs accelerates edge corrosion. We replace with stainless or copper, never another galvanized cap, and we document the flue condition underneath because rust flakes often mask liner damage.
- Gelco crown wash failures: cracking parallel to the flue tile. Gelco’s pre-formed crown wash systems save labor on new construction, but the thermal expansion differential between the wash material and the clay flue tile causes hairline cracks within three to five years. McKinney’s freeze-thaw cycle is mild compared to northern states, but even two or three hard freezes will open these cracks enough for water intrusion. We remove the failed wash, inspect the crown substrate with a hammer test, and apply a proper poured crown or HeatShield crown coating depending on what the substrate can support.
- Gelco wind band separation on tall flues. The wind band is the metal strap that secures the cap against updraft lift, and on Gelco caps mounted on flues extending more than 12 inches above the crown, the band can work loose as the chimney settles in Collin County’s expansive clay soils. We see this in older homes near McKinney’s Historic Downtown district, where the soil movement is more pronounced. Our fix: we re-secure with stainless hardware, add a secondary fastening point if the flue tile allows, and note any crown spalling we find during the process.
Our Gelco Chimney Cap & Crown Process

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Call and schedule. A live person answers, asks whether you know your Gelco model or can describe the symptom, and books a Level 2 inspection slot. You receive a text when your technician is en route.
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Camera inspection first. We run the camera down the flue before touching the cap or crown. The camera doesn’t lie, and neither does the written quote. We are looking for liner damage, creosote buildup, or water intrusion evidence that would change the scope.
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Diagnose and photograph. The technician photographs the cap or crown from the roof, measures the flue opening and crown dimensions, and checks for Gelco-specific failure patterns. You see the images on the tablet before any price is discussed.
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Written price and scope. We deliver a written price, written scope, and written warranty before any work is scheduled. This is Haven Standard Clause 1: have it in writing. No exceptions, no “call for a quote.”
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Parts decision and repair. For Gelco units, we explain whether OEM Gelco, a DuraFlex equivalent, or a custom fabricated cap makes sense for your flue count and roof pitch. The repair is completed, the flue is camera-checked again, and the work area is cleaned.
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Documentation and guarantee. You receive the photo record, the written warranty, and the 365-Day Done Right Promise. If it is not done right, we make it right.
Before
AfterWhat Gelco Chimney Cap & Crown Costs in McKinney
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Gelco standard cap replacement (single flue, stainless) | $340 - $520 | Flue tile condition, roof pitch, need for new fasteners |
| Gelco Multi-Flue cap replacement | $580 - $890 | Span width, gauge upgrade, custom screen size |
| Crown repair with HeatShield coating | $680 - $1,240 | Crown square footage, crack depth, need for mesh reinforcement |
| Full crown rebuild (poured concrete) | $1,450 - $2,800 | Crown dimensions, chimney height, scaffolding needs |
| Cap + crown combined service | $980 - $1,760 | Extent of water damage, liner condition, parts tier selected |
These ranges reflect McKinney’s market and our Haven buying network pricing. The only way to get your exact number is a free inspection. Call (469) 429-2623 and we will have a written quote to you before any work is scheduled.
Why McKinney Homeowners Call Level Two Chimney McKinney for Gelco Work

We have completed more than 38,000 chimney inspections and cleanings since 2009, every one with a written price before work started and a documented record when done. Corrine Halstead and our technicians know Gelco products from years of field work across Collin County, including the older homes near McKinney’s Historic Downtown district where deteriorating mortar joints and settling flues test every assumption a technician brings from the classroom.
Our background-checked, uniformed technicians arrive with license information displayed and a named assignment. The camera-scan inspection and photo record are included on every visit, not sold as an upgrade. We also carry DuraFlex and HeatShield materials, so if your Gelco cap sits on a flue that needs more than the cap itself, we do not hand you a referral slip. The 365-Day Done Right Promise covers every job, and our Free Second Opinion on any written estimate means you can verify what you have been told elsewhere.
FAQs
Gelco’s original warranty on materials typically expires after the stated period regardless of who services the cap, and using an independent service provider does not extend or invalidate it. We document the existing cap’s serial and condition with photos so you have a record if a material defect claim is still valid. If your cap is within the original warranty window, we will flag that and advise whether a warranty claim or our repair makes more financial sense. Call (469) 429-2623 for an exact quote - estimates are free.
Most Gelco cap sizes and mesh configurations remain available through Haven’s buying network, though some discontinued finishes and custom sizes require fabrication. We stock the common McKinney sizes for single-flue and multi-flue Gelco units, and we can fabricate custom caps from stainless or copper when OEM replacement is not practical. If your cap is more than fifteen years old, we will measure on site and confirm parts availability before any price is written. Call (469) 429-2623 for an exact quote - estimates are free.
Repair is viable when the frame is intact and only the mesh, wind band, or fasteners have failed; replacement is necessary when the lid is warped, the frame is rusted through, or the mounting flange no longer seals to the flue tile. We make this determination during the camera inspection and show you the specific failure point on the tablet. No replacement is recommended without photo evidence you can see for yourself. Call (469) 429-2623 for an exact quote - estimates are free.
Water enters the flue, accelerates liner deterioration, and can damage the smoke chamber and firebox masonry; in McKinney’s climate, this process is slower than in freeze-heavy regions but relentless during spring storm season. Class III creosote, the hardened tar deposit that chimney fires feed on, also forms faster in a damp flue. We will tell you plainly if the work can safely wait six months or a year, and we will show you the camera footage that supports either urgency or patience. Call (469) 429-2623 for an exact quote - estimates are free.
We typically schedule inspections within three to five business days, and most cap replacements and crown repairs are completed in a single visit once the written quote is accepted. Crown rebuilds requiring custom forming may need a return visit for the pour and cure. We do not promise same-day dispatch because the inspection comes first, and the written price comes before any work is scheduled. Call (469) 429-2623 to book - a live person answers.
Written by Corrine Halstead, Owner, Level Two Chimney McKinney at Level Two Chimney McKinney, serving McKinney and nearby areas.



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