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 Liner & Rebuild in West Chester: What to Know First
We provide independent Gelco chimney liner and rebuild service in West Chester, typically quoting same-week and completing most liner replacements within one to two days once parts are confirmed. Every job starts with a camera-scan inspection and a written price before any work begins - no verbal estimates, no scope changes mid-job. This page is for Gelco owners in West Chester, Kennett Square, and the western Main Line who need liner replacement, partial rebuild, or full chimney rebuild and want to know what they’re actually paying for before a tool comes out of the truck. Call (610) 321-4570 for a free estimate.
How Gelco Products Fail - and How We Fix Them
- Gelco Stainless Pro series: weld-seam corrosion at the flex joint. The Pro’s longitudinal weld can develop pinhole leaks where the flex adapter meets the rigid section, especially in West Chester’s freeze-thaw cycles. We see this most in 6-inch and 8-inch round installations from the 2012-2018 production run. Our fix is a full section replacement with a factory-matched Gelco rigid or, when the flue geometry demands it, a DuraFlex equivalent with a better-sealed transition collar.
- Gelco Flex-Liner kits: premature mesh fatigue in offset chimneys. The Flex-Liner’s outer mesh can separate from the inner wall when pulled through multiple offsets common in West Chester’s 1920s colonials near Everhart Park. The liner looks intact from the top but the mesh is delaminating, which means the insulation layer is compromised. We pull a new liner - Gelco if the flue is straight, HeatShield if we can reline in place - and document the offset angles so the next crew knows what they’re working with.
- Gelco top-mount dampers: cast-aluminum throat distortion. The cast throat plate on Gelco’s integrated damper-cap units can warp after sustained high-heat fires, especially when homeowners burn unseasoned oak from local suppliers. The damper won’t seal, which pulls conditioned air up the flue year-round. We replace with a Gelco OEM throat assembly or, when the cap housing is also degraded, a Famco stainless unit with a separate damper mechanism.
- Gelco oval-to-round adapters: creosote bridging at the transition. These adapters create a ledge where Class III glazed creosote builds up, particularly in shallow-pitch flues found in West Chester’s split-levels from the 1960s and 70s. The ledge isn’t visible from the firebox. We remove the adapter, clean the ledge with mechanical whips, and reinstall with a swept transition or replace with a custom-fabricated tapered piece from our Copperfield supply.
- Gelco chimney caps: base-rail rust-through on galvanized models. The pre-2015 galvanized caps with the stamped Gelco logo develop base-rail perforation where the mounting flange meets the crown. Water tracks underneath and spalls the crown concrete. We replace with a Gelco stainless cap or an Olympia Chimney equivalent, then seal the crown with a breathable silicone compound - not a surface coating that traps moisture.
Our Gelco Chimney Liner & Rebuild Process

- 1
Camera-scan inspection - NFPA 211 Level 2. Corrine Halstead or a named technician runs the camera from firebox to cap, recording flue condition, liner integrity, and any offset geometry. The customer sees the footage in real time. The camera doesn’t negotiate - it just shows you what’s there.
- 2
Written scope and price - Haven Standard Clause 1. We deliver a written price, written scope, and written warranty before any work is scheduled. No exceptions. If a competitor has already quoted, we provide a free second opinion.
- 3
Parts confirmation - OEM or quality aftermarket. We source Gelco direct when the flue matches standard dimensions. For custom offsets or discontinued sizes, we specify DuraFlex or HeatShield equivalents with equivalent or superior specifications, noted in writing.
- 4
Installation or rebuild - documented at every stage. Liner pulls are measured twice, cut once, and photographed at the connection points. Partial and full rebuilds follow local code for West Chester Borough and Chester County - permit pulled when required, inspection scheduled when applicable.
- 5
Smoke and draft test - verification before cleanup. We run a combustion spillage test and verify draft readings meet manufacturer spec for the Gelco liner installed. Readings are recorded and included in the job file.
- 6
Photo record delivery - Haven Standard Clause 4. The customer receives a documented photo record of before, during, and after. Our archive of every job since 2009 means we can reference your flue history on the next visit.
Before
AfterWhat Gelco Chimney Liner & Rebuild Costs in West Chester
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Gelco stainless liner replacement (straight flue, standard diameter) | $2,800 - $4,200 | Flue length, diameter, insulation wrap required |
| Gelco flex liner with offset navigation | $3,400 - $5,100 | Number of offsets, mesh reinforcement, termination hardware |
| Partial chimney rebuild (crown, upper courses, cap) | $4,500 - $7,800 | Course count, scaffolding needs, matching historic brick |
| Full chimney rebuild | $12,000 - $22,000 | Height, liner integration, footing condition, permit complexity |
| Gelco top-mount damper replacement | $680 - $1,150 | Throat plate only vs. full cap assembly, access difficulty |
These are West Chester market ranges for 2024-2025, based on our actual quoted jobs. Every estimate is free, in writing, and valid for 30 days. Call (610) 321-4570 for an exact quote on your Gelco system.
Why West Chester Homeowners Call Level Two Chimney West Chester for Gelco Work

We’ve inspected and cleaned more than 38,000 chimneys since 2009, and a significant share of the liner replacements in West Chester involved Gelco products installed in the 2000s and 2010s. Our technicians know the part numbers, the production-year quirks, and which failures are warranty-related versus wear-related. When Gelco discontinued the Flex-Liner 5.5-inch oval in 2019, we had already cross-referenced HeatShield and DuraFlex equivalents in our system - no delay while someone figures out what fits.
The 365-Day Done Right Promise applies to every Gelco job. Background-checked, uniformed technicians arrive on schedule with a text when they’re en route. Live phone support runs 24 hours a day, 7 days a week - no voicemail, no callback tag. Materials come through Haven’s buying network specifically to keep customer prices honest, whether that’s Gelco, Olympia Chimney, or another quality source.
FAQs
No. As an independent Gelco service provider, we use OEM-specified parts and installation practices that maintain any remaining manufacturer coverage. We document part serial numbers and installation methods in your job file in case a warranty claim arises.
Yes, for most production years. Gelco’s stainless rigid liners and flex liners from 2005 onward have direct replacements in current stock. For discontinued sizes like the pre-2019 5.5-inch oval, we specify quality aftermarket equivalents from DuraFlex or HeatShield with equivalent or superior specifications, noted in writing before work begins.
The camera scan decides. Pinhole leaks or isolated mesh fatigue can sometimes be repaired with a sectional insert or local reinforcement. Multiple breaches, extensive corrosion, or insulation compromise means full replacement. We show you the footage, explain the threshold, and write both options when both exist. Call (610) 321-4570 for a free camera inspection.
Most straight flue replacements are completed in one day. Offset flues or jobs requiring scaffold access may run into a second day. We confirm the schedule in writing when we deliver the price - no surprises.
A compromised liner allows combustion gases, including carbon monoxide, to leak into wall cavities or living space. It also lets creosote accumulate in the masonry where it can’t be cleaned, increasing chimney fire risk. The urgency depends on what the camera finds - some conditions can be monitored seasonally, others need immediate attention. We’ll tell you which category you’re in, with evidence.
Ready to know what your Gelco chimney actually needs? Call (610) 321-4570 for a free estimate. We’ll run the camera, show you the footage, and deliver a written price before any work is discussed.
Written by Corrine Halstead, Owner, Level Two Chimney West Chester at Level Two Chimney West Chester, serving West Chester and nearby areas.




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