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.
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Before
AfterGelco Chimney Liner & Rebuild in Bellevue: What to Know First
We provide independent Gelco chimney liner and rebuild service in Bellevue, with most Gelco liner replacements and partial rebuilds scheduled within a week and full rebuilds planned after a written scope and price are agreed on site. A typical Gelco stainless steel liner replacement runs $2,800-$4,200 in Bellevue depending on flue height and access; we put that in writing before any work starts, and we don’t touch tools until you’ve seen the camera footage and signed the scope. This page is for Gelco owners in Bellevue, Medina, Clyde Hill, and the Lakemont area who’ve been told they need liner work and want a second set of eyes with the documentation to back it up. Call (425) 696-0387 for a free estimate or bring us another company’s written quote for our free second opinion.
How Gelco Products Fail - and How We Fix Them
- Gelco UltraPro flexible liners in pre-1990 Bellevue chimneys: The UltraPro’s .006-inch 316Ti alloy handles creosote acids well, but we’ve found the collar connection at the appliance adapter loosens after 8-12 years of thermal cycling in homes with frequent shoulder-season burns, like the older Lakemont properties we service. The gap pulls condensation and flue gases into the surrounding masonry. We cut back to sound liner, install a new Gelco or DuraFlex adapter with a mechanical-lock seal, and smoke-test before we leave.
- Gelco rigid 304 stainless tees in exterior chase installations: The 304 alloy tee body corrodes at the weld seam where Bellevue’s wind-driven rain pools against the cold exterior chase wall. We see this on north-facing chases in Medina and Clyde Hill especially. We replace with 316Ti or 316L alloy, add a proper cricket or diverter if the chase cap is undersized, and document the water source so it doesn’t repeat.
- Gelco smooth-wall liners with failed insulation wraps: The ceramic blanket wrap compresses or slips when original installers use inadequate mesh spacers, dropping the liner’s UL 1777 zero-clearance rating. In Bellevue’s tight construction, that means adjacent framing gets too hot. We pull the liner, re-insulate with HeatShield Cerfractory Foam or a properly spaced new Gelco wrap, and re-certify the installation with photos for your insurer.
- Gelco liner collars in fireplace inserts with overfiring damage: Homeowners who run inserts hot for long burns - common in Bellevue during our wet November-through-March heating season - can warp the Gelco top plate or crack the surround collar. The liner itself is usually sound. We replace the collar assembly with OEM Gelco parts or a machined aftermarket equivalent from our Haven buying network, pressure-test the seal, and show you the before-and-after on screen.
- Gelco liner systems in chimneys with spalling flue tiles below: The liner drops through damaged terra cotta, but the shifting tile shards eventually puncture the flex wall from below. We find this during camera work on Bellevue homes built 1965-1985. Our fix is partial flue tile removal, a poured smoke chamber with HeatShield, then re-liner with Gelco or DuraFlex depending on your budget and burn pattern.
Our Gelco Chimney Liner & Rebuild Process
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Level 2 camera inspection with documented photo record. We run the camera the full flue length, record the footage, and flag any Gelco-specific wear patterns. Clause 4 of the Haven Standard requires this archive; we’ve done it on every job since 2009.
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Written price and scope before any work starts. Corrine or a senior tech walks you through the footage, names the parts we recommend - Gelco OEM, DuraFlex equivalent, or HeatShield repair - and delivers a single written price. No surprises, no “we’ll see once we’re in there.”
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Parts procurement through Haven’s buying network. We source Gelco, DuraFlex, HeatShield, Olympia Chimney, Famco, and Copperfield materials at volume, which keeps your price honest. We don’t mark up parts separately; they’re in the written scope.
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Installation or rebuild by background-checked, uniformed technicians. Your tech’s name and license number are on the work order. You get a text when they’re en route. We protect floors, contain dust, and work to NFPA 211 standards.
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Smoke test, draft measurement, and final documentation. We verify draw with a manometer, run a smoke pellet test on every joint, and add the completed photo record to your file. The 365-Day Done Right Promise starts now: if it’s not right, we make it right.
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Cleanup and written warranty delivery. You get the final scope, warranty terms, and our direct line. The job isn’t closed until you have paper in hand.
Before
AfterWhat Gelco Chimney Liner & Rebuild Costs in Bellevue
| Service | Typical Range in Bellevue | What Moves the Price |
|---|---|---|
| Gelco flexible liner replacement (single flue, standard access) | $2,800 - $4,200 | Flue height, roof pitch, whether we reuse the existing top plate |
| Gelco rigid liner with tee and cap assembly | $3,500 - $5,500 | Exterior chase rebuild needs, alloy grade (304 vs 316Ti) |
| Partial chimney rebuild with Gelco re-liner | $6,500 - $11,000 | Courses above roofline, crown condition, scaffolding requirements |
| Full chimney rebuild with new Gelco system | $12,000 - $22,000 | Foundation to roofline, liner diameter, chase enclosure type |
| Gelco collar/adapter repair only | $650 - $1,400 | Accessibility, parts availability, whether smoke chamber work is needed |
Bellevue’s steep roofs in neighborhoods like Somerset and the water-exposed chases near Lake Washington add labor time. We don’t guess at price from the office. Call (425) 696-0387 for a free estimate - we’ll inspect, document, and write the real number.
Why Bellevue Homeowners Call Level Two Chimney Bellevue for Gelco Work
We’ve inspected and cleaned more than 38,000 chimneys since 2009, every one with a written price before work started and a documented record when done. The camera doesn’t guess. Neither do I. Corrine Halstead and our crew have been on Bellevue roofs long enough to know which Gelco installations were done in the 2008-2012 rush and which are showing their age now. We’re not a franchise; we’re independently owned and operated under the Haven Standard, with background-checked techs who carry license numbers on every page and every work order. When Gelco parts are backordered, we have DuraFlex and HeatShield equivalents ready through our Haven buying network, so your job doesn’t stall. And our 365-Day Done Right Promise means if something’s not right, we make it right - stamped on every job, not just the easy ones.
FAQs
No, as long as the repair uses Gelco-approved parts and methods. As an independent Gelco service provider, we use OEM Gelco components or code-compliant equivalents from DuraFlex and HeatShield that meet the same UL listings. We document everything so your warranty status is traceable. Call (425) 696-0387 if you want us to review your original installation paperwork.
The camera decides, not a calendar. We look for wall thinning, seam separation, or insulation displacement that drops the liner below UL 1777 standards. If the damage is localized to a collar, tee, or top plate, repair usually works. If the flex wall has multiple perforations or the insulation is saturated, replacement is the honest call. We show you both options with footage and written prices. Call (425) 696-0387 for a free inspection.
Gelco liners and components are still manufactured and available through our Haven buying network, though specific collar sizes and adapter configurations can have lead times of 2-4 weeks. We stock common Gelco diameters and keep DuraFlex and HeatShield cross-references on hand so we’re never waiting on a single supplier. We’ll tell you exact availability when we write your scope.
Most single-flue Gelco flexible liner replacements in Bellevue are completed in one day, assuming standard roof access and no hidden masonry damage. Rigid systems, exterior chases, or jobs requiring partial rebuilds may run 2-3 days. We don’t promise speed we can’t deliver; we promise a written schedule with your written price.
A compromised liner lets flue gases, including carbon monoxide, leak into wall cavities and living spaces. In Bellevue’s tightly built homes, that’s a real hazard, not theoretical. Creosote can also reach combustible framing if insulation has slipped. We don’t scare-sell; we show you the camera footage and let you decide. But we won’t sign off on a system we know is unsafe. Call (425) 696-0387 and we’ll walk you through exactly what we found.
Written by Corrine Halstead, Owner, Level Two Chimney Bellevue at Level Two Chimney Bellevue, serving Bellevue and nearby areas.