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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AfterGelco Chimney Liner & Rebuild in Hicksville: What to Know First
We provide independent Gelco chimney liner and rebuild service in Hicksville, with most jobs completed in a single visit and upfront pricing that matches the final invoice. Gelco stainless steel liners and flexible liner kits are common in the split-levels and expanded Capes near Broadway Mall, where freeze-thaw cycles and older masonry create conditions that test every seam. A typical Gelco liner replacement runs $2,800-$4,500 depending on flue count and height, and we never recommend work without camera evidence you can see for yourself. This page is for homeowners who know they’ve got Gelco components and want a technician who understands the difference between a Series 316 flex liner and a Series 304 rigid run without learning it on your roof. Call (516) 259-3797 - a live person answers, any hour.
How Gelco Products Fail - and How We Fix Them
- Series 316 flexible liner fatigue at termination collars. In Hicksville’s coastal-influenced climate, the collar where a Gelco 316 flex liner meets the top plate sees accelerated corrosion from salt-laden winter air. We’ve pulled collars that looked sound from below but were paper-thin at the crimp. We replace with Gelco OEM or matched 316Ti alloy, never downgrading to 304 in that spot.
- Series 304 rigid liner weld-seam separation in oil-to-gas conversions. When a Hicksville homeowner switches from oil to natural gas, the cooler, wetter exhaust condenses inside a 304 rigid run that was sized for hotter oil flue gases. The longitudinal weld seam opens slowly, often hidden behind a smoke shelf. We sleeve with a properly sized DuraFlex or Gelco 316Ti flex liner rated for the new appliance, and we document the before condition with photos.
- Gelco oval-to-round adapter distortion in pre-1980 brick chimneys. The oval adapters Gelco ships for rectangular flues don’t always survive the squeeze into a parged clay liner in a Levitt-era chimney. The adapter cracks at the weld, creating a gap that leaks condensation into the wall. We fabricate a custom transition or specify a Gelco ovalizer kit, depending on clearances.
- Insulation blanket slippage in tall Hicksville colonials. On two-story jobs near Cantiague Park, the mesh-and-blanket insulation wrap on Gelco flex liners can sag if the mesh was overtightened during install. Hot spots develop where the liner contacts masonry directly. We remove, re-insulate with fresh Ceramic Fiber 2100°F blanket, and secure with stainless mesh at proper tension - not gorilla-tight, not loose.
- Top-sealing damper incompatibility after Gelco liner retrofit. Homeowners who add a Gelco liner but keep an old Lyemance or Lock-Top damper sometimes find the new liner collar interferes with damper closure. The damper hangs open, bleeding heat all winter. We spot this during camera inspection and either modify the Gelco termination or specify a compatible damper, solved before we leave.
Our Gelco Chimney Liner & Rebuild Process
- 1
Call and schedule. A live person answers, 24 hours a day. We ask about your appliance type, fuel, and any symptoms. If you know it’s Gelco, tell us - we bring the right fittings.
- 2
Level-2 camera inspection. Our tech runs a camera the full flue length. You see the footage on a tablet. We mark timestamps, explain what we’re looking at, and give a plain-English verdict. No camera evidence, no sales pitch.
- 3
Parts decision. If Gelco OEM is available and appropriate, we use it. If lead time is unreasonable or an aftermarket equivalent meets spec (DuraFlex 316Ti for a 316 flex application, for instance), we explain the trade-off and your call. No bait-and-switch.
- 4
The repair. Background-checked, uniformed technicians complete most Gelco liner replacements and partial rebuilds in one visit. For full chimney rebuilds, we stage materials and work consecutive days until done.
- 5
Smoke and draft test. We fire the appliance and verify draw, spillage, and liner surface temperature. The chimney doesn’t care what you hoped it was - it shows you what it is.
- 6
Documentation and guarantee. Photos, invoice, and the 90-Day Done Right Promise in writing. If it’s not right, we come back. No paperwork to find, no arguing.
What Gelco Chimney Liner & Rebuild Costs in Hicksville
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Gelco flex liner replacement (single flue, standard height) | $2,800 - $3,800 | Flue length, number of bends, access (steep roof, tight chase) |
| Gelco rigid liner replacement (oil or wood) | $3,200 - $4,500 | Diameter, insulation requirements, appliance connection type |
| Partial chimney rebuild with Gelco liner | $4,500 - $7,500 | Courses to replace, crown condition, scaffolding needs |
| Full chimney rebuild with new Gelco liner system | $8,500 - $14,000 | Height, liner configuration, exterior finish (brick, stucco, stone veneer) |
| Gelco liner repair (spot weld, collar, adapter) | $450 - $1,200 | Accessibility, parts availability, whether heatshield refractory is also needed |
These are Hicksville-market ranges based on jobs we’ve completed in Nassau County. The exact number comes after we see your chimney. We provide no-hassle upfront pricing - the estimate figure is the invoice figure. Call (516) 259-3797 for a free estimate.
Why Hicksville Homeowners Call Hearthstone Chimney Co. for Gelco Work
We’ve been serving Hicksville and nearby communities for over 42 years. Russell Haines and our crew know the difference between a Gelco Series 316 flex and a competitor’s knockoff because we’ve pulled both out of chimneys that failed prematurely. Our Level-2 camera inspections end with photos you can see and a plain-English verdict - documented like an engineer, explained like a craftsman. If your Gelco part is backordered, we have working relationships with DuraFlex, HeatShield, and other professional-grade suppliers so you’re not left burning space heaters while you wait. The 90-Day Done Right Promise means if it’s not right, we make it right - in writing, no arguing. That’s the Keystone Standard: Krafted right, Every time, Your home first, Standing behind it.
FAQs
No - Gelco’s limited warranty covers manufacturing defects regardless of who installs or services the product, provided the work follows their installation guidelines. As an independent Gelco service provider, we document our methods and materials so any future warranty claim has clear evidence. If you’re unsure about your warranty status, call us at (516) 259-3797 and we’ll review it with you.
We stock common Gelco collars, adapters, and flex lengths, and we order direct for less common sizes. If Gelco OEM has a long lead time, we’ll propose a professional-grade equivalent (DuraFlex 316Ti, for example) and explain the specification match. You decide before we order - no surprises on the bill.
The camera tells the story. Isolated collar corrosion or a single adapter crack often repairs cleanly. Multiple seam separations, widespread pitting, or insulation saturation usually mean replacement is the square deal. We’ll show you the footage, explain both options with honest pricing, and tell you plainly if the work can safely wait. Call (516) 259-3797 to schedule - estimates are free.
Most single-flue Gelco flex liner replacements in Hicksville homes are completed in one day. Full chimney rebuilds with new liner systems typically run two to four days depending on weather and masonry cure requirements. We don’t rush masonry - a liner set in green mortar is a callback we won’t have.
A compromised liner allows exhaust gases, including carbon monoxide, to leak into wall cavities and living spaces. In wood-burning systems, creosote can reach combustible framing through liner gaps. The risk is real, but we don’t scare-sell. If your camera inspection shows the liner is sound, we’ll say so. If it shows a problem, we’ll show you exactly where and why. Either way, you’ll know. Call (516) 259-3797 for a free estimate.
Ready to talk through your Gelco chimney liner or rebuild? A live person answers our phones 24 hours a day, 7 days a week. Call (516) 259-3797 for a free estimate in Hicksville. We’ll be there when we say, we’ll show you what we find, and we’ll stand behind the work - done right, in writing, no arguing.
Written by Russell Haines, Owner & Master Sweep, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Hicksville and nearby areas.