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 Cleaning & Sweep in Joliet: What to Know First
We provide independent Gelco chimney cleaning and sweep services across Joliet, with most sweeps booked within a week and Level 2 camera inspections scheduled within a few days. A standard Gelco sweep runs $189-$289; a Level 2 inspection with full camera documentation is $289-$429, and you’ll have our written price in hand before any work starts. This page is for Joliet homeowners who own a Gelco chimney cap, damper, or liner system and need to know whether their sweep requires Gelco-specific parts or standard tooling. Call (815) 620-5234 to book or to bring us a competitor’s written estimate for a free second opinion.
How Gelco Products Fail - and How We Fix Them
- Gelco Model L chimney caps in Joliet’s freeze-thaw zones. The L-series galvanized cap uses a single-seam lid design that traps water where the lid meets the mesh skirt. After three to five Joliet winters, that seam rusts through from the inside out. We see this on bungalows near the Des Plaines River valley where wind-driven snow sits on the cap for days. We remove the cap, document the flue condition with our camera, and install a replacement Gelco Model L or an equivalent stainless unit from our Haven network - your choice, with the price difference written out.
- Gelco pre-fab chimney chase covers with factory caulk failure. Gelco’s chase cover sealant is rated to 200°F, but in Joliet homes with gas inserts running continuous pilot lights, the chase top never fully cools. The caulk hardens and gaps within four to six years. Water enters the chase, soaks the framing, and drips down the flue during the first hard freeze. We strip the old cover, inspect the chase framing with our camera from below, and reseal with a high-temp silicone rated to 450°F - or replace with a Gelco cover if the metal has pitted.
- Gelco Lyemance dampers with creosote binding. The Lyemance top-sealing damper seals with a silicone gasket that creosote loves to adhere to, especially in Joliet’s older two-flats where homeowners burn pressed logs or soft maple. The gasket hardens, the damper cable drags, and the homeowner either forces it or stops using it. We remove the damper assembly, clean the gasket seat with a soft abrasive, replace the gasket with OEM Gelco or a compatible high-temp seal, and test the cable tension before we leave.
- Gelco stainless flex liners with improper collar connections. Gelco’s flex liner kits include a top collar that must be riveted, not screwed, to the liner termination. We’ve found three installations in Joliet’s Cathedral Area where a previous contractor used self-tapping screws, which back out as the liner expands and contracts. The collar lifts, rain enters, and the liner fills with sediment. We cut back to sound metal, re-terminate with proper Gelco rivets or a DuraFlex equivalent from our Haven buying network, and camera-verify the connection.
- Gelco chimney pots with spalled flue gas exposure. The Gelco Canterbury and Stratford pots are cast refractory, not concrete, but Joliet’s sulfur-heavy coal-gas history means some flues still carry acidic condensation. The pot base spalls, flakes fall into the flue, and the homeowner calls for a sweep thinking it’s creosote. We camera the flue first, identify refractory debris versus creosote, remove the pot if it’s compromised, and recommend either a Gelco replacement or a stainless pot from Olympia Chimney depending on the flue gas profile.
Our Gelco Chimney Cleaning & Sweep Process

- 1
Call and schedule. A live person answers, notes your Gelco model if you know it, and books a sweep or Level 2 inspection. You’ll get a text when your tech is en route.
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Arrival and setup. Our uniformed tech arrives with license visible, lays protective sheeting, and sets up the camera rig before touching your system.
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Camera inspection first. NFPA 211 Level 2: camera down the flue, smoke chamber, and firebox. We look for creosote class, liner condition, and any Gelco-specific wear patterns. The photo doesn’t argue. It just shows you what’s there.
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Written price, written scope. Before any cleaning or repair, you receive a written price, written scope, and written warranty under Haven Standard Clause 1. No exceptions.
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Sweep and service. Rotary cleaning for creosote and soot removal, damper service if needed, cap and crown inspection. Gelco parts are sourced through our Haven buying network or OEM as you prefer.
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Documentation and close. Photo record uploaded under Haven Standard Clause 4, 365-Day Done Right Promise stamped on your invoice, and a clean work area left behind.
Before
AfterWhat Gelco Chimney Cleaning & Sweep Costs in Joliet
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Standard Gelco chimney sweep (Level 1) | $189-$289 | Flue height, creosote class (I vs. III), accessibility |
| Level 2 inspection with camera documentation | $289-$429 | Number of flues, chase height, need for roof access |
| Gelco cap replacement (Model L or equivalent) | $340-$580 | Stainless vs. galvanized, mesh size for local code |
| Lyemance damper gasket service | $180-$290 | Gasket material, cable replacement needed |
| Chase cover reseal or replacement | $260-$740 | Reseal vs. full replacement, chase framing condition |
These are Joliet-market prices based on our Haven buying network rates for Gelco, DuraFlex, and HeatShield materials. We don’t markup hidden. Call (815) 620-5234 for an exact quote - estimates are free, and we honor our Free Second Opinion on any competitor’s written estimate.
Why Joliet Homeowners Call Level Two Chimney Joliet for Gelco Work

We’ve cleaned and inspected more than 38,000 chimneys since 2009, and a significant share of Joliet’s older housing stock runs Gelco caps, dampers, or liners installed in the 1990s and 2000s. Corrine Halstead and our crew know the difference between a Gelco Model L that needs replacement and one that needs a gasket - and we put the camera image in front of you before we name the price. Our 365-Day Done Right Promise means if the sweep doesn’t hold, we return. Our background-checked techs carry license numbers on every page and text when they’re en route. And because we source through the Haven network across Gelco, DuraFlex, HeatShield, Olympia Chimney, Famco, and Copperfield, we can recommend the part that fits your flue, not just the part that fits our shelf.
FAQs
No - professional chimney sweep by a qualified technician does not void Gelco’s product warranty, though damage caused by improper cleaning methods (power-washing a cap, using steel wool on a damper gasket) is not covered. We document our methods with photos so there’s no dispute. Call (815) 620-5234 for an exact quote - estimates are free.
We source both. OEM Gelco parts come through our Haven buying network at network rates; quality aftermarket equivalents from DuraFlex or HeatShield are offered when they match or exceed Gelco specs, with the price difference written out before you choose. We are an independent Gelco service provider, not a factory-authorized dealer.
The camera decides. A sweep removes creosote and soot from the flue surface; it does not repair a separated liner collar, spalled refractory, or corroded flex. Our Level 2 inspection shows you the difference on screen, and we mark clearly on your written scope what can wait and what can’t. Call (815) 620-5234 for an exact quote - estimates are free.
NFPA 211 recommends annual inspection; sweep frequency depends on use. In Joliet, where many Gelco systems serve fireplaces that run weekends December through March, we see heavy creosote buildup every one to two years. Gas systems need less frequent sweep but still need cap and damper inspection for freeze-thaw damage. Call (815) 620-5234 for an exact quote - estimates are free.
Class I creosote becomes Class III, which restricts airflow, causes smoky fires, and increases chimney fire risk. In Gelco systems with Lyemance dampers, neglected creosote also hardens the gasket seat, turning a $180 service into a $290 replacement. The photo record from our inspection lets you see exactly where you stand. Call (815) 620-5234 for an exact quote - estimates are free.
Ready to schedule your Gelco chimney cleaning and sweep in Joliet? Call (815) 620-5234 to speak with a live person, 24 hours a day. We’ll book your appointment, send a text when your tech is on the way, and put the written price in your hand before any work begins.
Written by Corrine Halstead, Owner, Level Two Chimney Joliet at Level Two Chimney Joliet, serving Joliet and nearby areas.





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