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 Elmhurst: What to Know First
We provide independent Gelco chimney liner and rebuild service in Elmhurst, with most liner replacements completed in one day and full rebuilds typically scheduled within a week. Every job starts with a camera-scan inspection and a written price before any work begins - no exceptions. If you own a Gelco liner system and you’re seeing rust flakes in the firebox, draft problems, or a sudden creosote buildup that doesn’t match your burning habits, call (708) 498-3199. Corrine Halstead and our crew have worked Gelco systems across Elmhurst, from the older bungalows near York Woods to the brick colonials along the Prairie Path corridor, and we keep both OEM and quality aftermarket Gelco-compatible parts in our buying network.
How Gelco Products Fail - and How We Fix Them
- Gelco UltraPro flexible liners in Elmhurst’s freeze-thaw climate often develop circumferential cracks at the first joint above the smoke chamber. The 316Ti alloy handles the flue gases fine, but the seam weld sees thermal shock every time a cold chimney meets a hot fire. We cut back to sound metal, install a Gelco-compatible transition section, and pressure-test before we leave.
- Gelco stainless rigid pipe systems (common in Elmhurst homes with straight, tall flues) suffer offset joint separation after 10-15 years. The locking bands corrode from the outside in, especially where attic insulation traps moisture against the outer wall. We replace with matched-band assemblies or transition to a DuraFlex equivalent when Gelco lead times stretch past two weeks.
- Gelco smooth-wall liners delaminate at the seam weld when installed with an oversize insulation blanket. The gap lets condensation pool, and the hydrochloric acid from coal soot or modern compressed logs eats the seam from the inside. We pull the liner, verify the flue dimension with a laser measure, and reinstall with the correct pack - or switch to HeatShield cerfractory resurfacing if the flue is structurally sound.
- Gelco top plates and termination caps on Elmhurst homes with shallow-pitch roofs collect ice in the collar gap. The freeze-thaw pops the seal, and water runs down the outside of the liner, rusting the top course of flue tiles underneath. We replace the cap, seal with high-temp silicone rated to 600°F, and document the flue tile condition with photos - Clause 4 of the Haven Standard.
- Gelco oval-to-round adapters in fireplace insert installations work harden at the crimp points after repeated heating cycles. The metal thins, the creosote finds the gap, and you get a Class III glazed deposit exactly where you can’t reach it with a standard brush. We pull the insert, replace the adapter, and run a rotary poly chain to bare metal before reassembly.
Our Gelco Chimney Liner & Rebuild Process

- 1
Camera-scan inspection. We drop a 360° camera from the top and scan up from the firebox. The footage goes to a tablet you can watch in real time. Corrine Halstead reviews every scan before any price is discussed - “The camera doesn’t editorialize. Neither do I.”
- 2
Written scope and price. We deliver a single-page document: what we found, what it costs, what parts we’ll use, and what the warranty covers. Haven Standard Clause 1 - have it in writing. No verbal estimates, no “we’ll see when we get into it.”
- 3
Parts decision. If your job specifies Gelco OEM, we source through our Haven buying network. If Gelco backorders the part (their 6-inch smooth-wall has run 3-4 weeks at times), we quote a DuraFlex or Olympia Chimney equivalent with identical alloy specs and warranty terms. You choose before we order.
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Installation or rebuild. Liner jobs: we pull the old, prep the flue, install the new with proper insulation pack, and lock the termination. Rebuilds: we work course by course, matching existing brick where possible, and install a new crown with proper drip edge and expansion joint.
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Pressure test or smoke test. Liners get a NFPA 211-compliant pressure test at 1.5 times working draft. Rebuilds get a smoke pellet test to verify no leakage at the new-to-old interface. We record both on video.
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Photo record and warranty. You get a USB drive or cloud link with inspection photos, test footage, and your written warranty. We keep a duplicate on file. The 365-Day Done Right Promise applies from day one.
Before
AfterWhat Gelco Chimney Liner & Rebuild Costs in Elmhurst
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Gelco liner replacement, flexible 316Ti | $2,800 - $4,200 | Flue height, number of offsets, insulation pack required |
| Gelco rigid liner replacement | $3,400 - $5,100 | Story height, joint count, attic access difficulty |
| Partial chimney rebuild (above roofline) | $4,500 - $7,800 | Brick matching, crown complexity, liner extraction |
| Full chimney rebuild with new Gelco liner | $8,500 - $14,000 | Foundation condition, scaffolding needs, flue count |
| Gelco liner repair (sectional replacement) | $1,200 - $2,400 | Access to damaged section, parts availability |
These are Elmhurst-market prices based on jobs we’ve completed in the last 18 months. Every estimate is free, and we honor our Free Second Opinion on any competitor’s written quote. Call (708) 498-3199 to schedule - we’ll have a written price to you within 24 hours of inspection.
Why Elmhurst Homeowners Call Level Two Chimney Elmhurst for Gelco Work

We’ve inspected and cleaned more than 38,000 chimneys since 2009, and we’ve learned that Gelco owners in Elmhurst want two things: a technician who knows the difference between a Gelco UltraPro and a Gelco ProFlex without reading the stamp, and documentation they can show their insurance adjuster or home buyer. Our crew is background-checked, uniformed, and assigned by name - you’ll get a text when your tech is on the way. If Gelco parts are backordered, we don’t stall your job; we quote equivalent DuraFlex or HeatShield options at the same appointment. The 365-Day Done Right Promise means if the liner smokes or the crown cracks, we come back and make it right. No charge, no argument, no voicemail loop - our phones are answered live, 24/7.
FAQs
No. As an independent Gelco service provider, we use OEM-spec parts and follow manufacturer installation clearances. Gelco’s warranty covers defects in materials and workmanship; it does not require factory-authorized installation. We document every spec in your photo record so any future claim has the paperwork it needs.
Most flexible liner replacements are completed in one day. Rigid systems or jobs with multiple offsets may run into a second day. We book the full window and don’t charge extra if weather or access slows us down - the written price is the price.
We don’t price-match; we provide a Free Second Opinion on any written estimate. Bring us their scope and we’ll tell you if the parts spec, labor line items, and warranty terms are equivalent. Often they’re not - we’ve seen “Gelco-compatible” quoted where the alloy grade was downgraded. We’ll show you the difference on camera.
The camera decides. If the flue tiles are sound and the liner is the only failure, we repair or replace the liner. If we find spalling tile, deteriorated mortar, or a shifting chimney structure, we quote the rebuild with the liner included. We never recommend work you can’t see - the inspection footage is yours to keep.
Gelco has consolidated some lines in recent years. We maintain cross-reference sheets for discontinued adapters and termination caps, and we stock common transitions through our Haven buying network. If no exact equivalent exists, we quote a DuraFlex or Olympia Chimney replacement with identical or superior alloy specs. You’ll know before we order.
Written by Corrine Halstead, Owner, Level Two Chimney Elmhurst at Level Two Chimney Elmhurst, serving Elmhurst and nearby areas.





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