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
AfterWhy Evanston Homeowners Choose Gelco Chimney Cleaning
Level Two Chimney Evanston provides independent Gelco chimney cleaning, repair, and parts replacement for homeowners across Gelco service in Evanston and the North Shore. We’re not affiliated with or authorized by Gelco - we service the brand as a fully independent shop with hands-on experience across its stainless liner kits, top-sealing dampers, and multi-flue caps. Every Gelco job we take starts with an NFPA 211 Level 2 camera inspection, a written price before any work begins, and a documented photo record when we’re done. Call (708) 234-1174 to schedule.
Evanston’s concentration of 1880s-1920s masonry chimneys puts unusual stress on Gelco components. Lake Michigan’s northeast winds drive moisture directly into crowns and mortar joints, and those 30-40 annual freeze-thaw cycles expand hairline cracks into real structural problems within a season or two. We’ve swept Gelco liners in Victorians near the lakefront where the flue was fine but the crown had spalled so badly the cap was floating on debris. The camera doesn’t negotiate - and neither does creosote.
Why Trust Level Two Chimney Evanston for Your Gelco Chimney Cleaning?
Corrine Halstead, our owner, learned the trade at Apex Technical School in Manhattan before building Level Two’s Evanston operation. She and our crew have run inspections and cleanings across Evanston for several years now, including repeated jobs on the older masonry stacks near the lakefront historic district. Corrine’s known for showing customers the camera footage first and the invoice second - nothing gets approved without both on the table.
We’ve diagnosed and restored hundreds of Gelco chimneys in real Evanston winter conditions, so we know how this brand’s flexible liners sag at offset bends in pre-war construction, how its top-sealing damper gaskets dry out after seasons of lake-effect cold, and how its single-flue cap mounting flanges corrode where salt air meets freeze-thaw. We stock common Gelco-compatible parts locally and source through Haven’s buying network to keep customer prices honest. If a Gelco OEM part is discontinued or backordered, we use quality aftermarket stainless liners, caps, and damper gaskets that match spec - and we tell you which we’re using before we start, with the difference in writing under Clause 1 of the Haven Standard.
Every technician is background-checked and uniformed, with license information displayed on every page. You get a text when your tech is on the way, a written scope and warranty before work starts, and a 365-Day Done Right Promise stamped on every job.
Common Gelco Chimney Cleaning Problems We Fix in Evanston
- Gelco flexible liner sagging or kinking at offset bends. In Evanston’s 1880s-1920s masonry chimneys, original construction often includes abrupt offsets to route flues around floor joists or stairwells. Gelco stainless flexible liners can sag or kink at these bends, creating low spots where creosote pools and airflow drops. We find this repeatedly in east-side historic neighborhoods where chimneys were built without clay tile liners and later retrofitted. Our camera inspection identifies the kink location precisely; rotary sweeping clears the creosote buildup, and if the liner is structurally compromised, we recommend replacement under a written scope with exact measurements.
- Gelco single-flue cap corrosion at mounting flanges and screen mesh. Evanston’s lake-effect moisture accelerates corrosion where cap flanges meet the flue tile or liner top. We’ve pulled Gelco single-flue caps off crowns in Near North and southeast Evanston where the mesh had rusted through completely, letting squirrels and rain into the flue. The cap looks intact from the ground. We document the corrosion with photos, quote exact-fit replacement in writing, and install before the next burn season.
- Gelco top-sealing damper gasket failure. The silicone or rubber gasket on Gelco top-sealing dampers dries out and loses its seal after repeated exposure to cold downdrafts off Lake Michigan. Homeowners notice smoke spillage on cold starts, higher heating bills, or a persistent draft even when the firebox is closed. Last winter our crew swept a Gelco liner in a 1920s Evanston two-flat where the homeowner had been getting smoke spillage on cold starts. We found the Gelco top-sealing damper gasket dried out and a kinked liner section at the offset that was trapping glazed creosote. We replaced the gasket, cleared the creosote with rotary sweeping, and the draw improved immediately on the next burn.
- Gelco firebox refractory panel cracking and spalling. The refractory panels or firebox mortar in Gelco-equipped fireboxes crack and spall after repeated freeze-thaw cycles, especially where exterior-facing firebox walls get cold from lake winds. Shiny black deposits on cracked mortar often indicate pyrolysis - combustible gases condensing in gaps where the firebox integrity is compromised. This is not cosmetic. We document the crack pattern, measure panel clearances, and recommend replacement when structural integrity is breached.
- Forgotten secondary flues in multi-flue Gelco installations. In Evanston’s larger Victorian and Craftsman homes east of Ridge Avenue, sweeps routinely discover forgotten secondary flues that once served coal furnaces, sometimes opening into wall cavities or unlined attic spaces alongside still-active fireplace flues. Homeowners frequently have no idea these flues exist. When a Gelco liner or cap has been installed on the active flue only, the abandoned flue becomes a moisture and animal pathway. Our full camera inspection checks every flue in the stack, not just the one with the current appliance.
Before
AfterGelco Parts & Our Repair-vs-Replace Approach
We match Gelco components with exact-fit replacements when available. For Gelco stainless-steel flexible liner kits, we stock common diameters and lengths for Evanston’s typical fireplace and furnace flue sizes. For Gelco single-flue and multi-flue chimney caps, we carry standard mesh and flange configurations that fit the crown dimensions we see most often in local pre-war construction. Gelco top-sealing damper assemblies and replacement gaskets are on our shelf for same-day or next-day installation.
When OEM parts are discontinued or backordered, we use high-quality aftermarket stainless liners, caps, and damper gaskets that meet or exceed Gelco spec. We tell you which we’re using, why, and the price difference - in writing, before work starts, under Clause 1 of the Haven Standard.
If a Gelco liner is kinked beyond safe sweeping or the firebox refractory is structurally compromised, we recommend targeted replacement over repeated patching. We’ve refused to clear fireboxes for use when the refractory damage exceeded safe limits - Corrine keeps that list because she figures it’s the most honest thing she owns. You’ll get the camera footage, our written assessment, and a real recommendation on whether work can wait or needs to happen now. Call (708) 234-1174 for a free estimate.
Our Gelco Service Process - Step by Step
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Diagnosis with NFPA 211 Level 2 camera inspection. We run a camera down every Gelco flue to document liner condition, creosote class, damper operation, and cap integrity. In Evanston’s older masonry, we also inspect for abandoned secondary flues and unlined attic spaces. You get the footage and a written condition report before any work is proposed.
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Written price, scope, and warranty before work starts. Clause 1 of the Haven Standard requires it. No exceptions. The price includes parts, labor, and documentation.
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Repair or replacement with Gelco-compatible or OEM parts. We use exact-fit Gelco components when available, quality aftermarket when necessary. Creosote removal, cap replacement, and damper repair are our most common Gelco sub-services in Evanston.
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Post-service testing and documentation. We verify draft, damper seal, and cap fit. Clause 4 of the Haven Standard requires a documented photo record on every job - included as standard, not an optional add-on. You walk away with photos, camera footage, readings, written scope, and written warranty.
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365-Day Done Right Promise. If it’s not done right, we make it right. Stamped on every job.
Gelco Products We Service & Install in Evanston
We work across Gelco’s full residential line: stainless-steel flexible chimney liner kits in standard diameters for fireplace and appliance flues; single-flue and multi-flue chimney caps with standard mesh configurations; top-sealing damper assemblies and replacement gaskets; and firebox repair products including refractory panels, crown sealants, and flashing compounds. We stock common sizes locally for fast turnaround on Evanston’s typical pre-war flue dimensions. Less common sizes or multi-flue cap configurations may require a short order through Haven’s buying network - we’ll tell you exactly which we have on the shelf and which needs ordering, with timeline in writing.
We Also Service These Brands
Level Two Chimney Evanston is not a single-brand shop. We service and install DuraFlex stainless liners, HeatShield cerfractory flue resurfacing systems, Olympia Chimney products, Famco venting components, and Copperfield chimney supplies. Our multi-brand capability means we recommend what’s right for your chimney, not what we happen to sell.
FAQs - Gelco Chimney Cleaning Service in Evanston
No. We are a fully independent Gelco service provider with no affiliation, authorization, partnership, or endorsement from the manufacturer. We service Gelco products based on hands-on field experience across hundreds of chimneys in Evanston and the North Shore, not on factory training or dealer status. Our independence means we can source both OEM and quality aftermarket parts to keep your costs honest.
Yes. We replace Gelco top-sealing damper gaskets as a standard service. The gasket dries out and loses compression after seasons of cold downdrafts, especially in Evanston’s lake-effect exposure. We stock replacement gaskets locally, diagnose seal failure with smoke-pencil testing, and install with written warranty. Call (708) 234-1174 for an exact quote - estimates are free.
It depends on the severity. A minor deflection may be sweepable with rotary equipment and close camera monitoring. A sharp kink that traps creosote or restricts airflow below safe draft levels means the liner is compromised and needs section replacement or full reline. We camera-inspect the kink, measure the restriction, and give you a written recommendation with photos. No guesswork.
We stock standard Gelco multi-flue cap configurations that fit the crown dimensions common in Evanston’s Victorian and Craftsman homes. Unusual crown sizes or custom overhang requirements may need a short order through Haven’s buying network. We measure your crown during inspection and tell you same-day whether we have your fit on the shelf.
Cracked firebox mortar with shiny black deposits indicates pyrolysis - combustible gases condensing in gaps where refractory integrity is lost. This happens in Evanston when freeze-thaw cycles stress Gelco-equipped fireboxes, especially on exterior-facing walls. It’s a genuine fire hazard, not cosmetic damage. We document the crack pattern, measure clearances to combustibles, and recommend refractory panel replacement when structural limits are breached. Call (708) 234-1174 for inspection - estimates are free.
We service Gelco chimneys in single-family homes, multi-family buildings, and condos throughout Evanston and Wilmette Gelco service areas where roof access and safety conditions permit. High-rise or limited-access buildings may require building management coordination for roof access or staging. We assess access during scheduling and coordinate directly with your building manager when needed.
Gelco chimney cleaning in Evanston and Glenview Gelco service areas typically runs $180-$280 for a standard sweep with NFPA 211 Level 2 camera inspection included. Cap replacement, damper gasket replacement, or creosote removal from a kinked liner adds $120-$340 depending on parts and labor. Full liner replacement is quoted by the foot with written scope. We deliver a written price before any work starts - always, no exceptions. Call (708) 234-1174 for an exact quote - estimates are free.
Book Your Gelco Service in Evanston, IL
Schedule your our Chimney Cleaning & Sweep services, inspection, or repair with Level Two Chimney Evanston. We’ll run the camera, name the price in writing, and show you the footage before we start. Live phone support 24 hours a day, 7 days a week at (708) 234-1174. Free estimates. Free second opinion on any competitor’s written quote.
Written by Corrine Halstead, Owner at Level Two Chimney Evanston, serving Evanston since 2009.