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 Cap & Crown in Hicksville: What to Know First
We provide independent Gelco chimney cap and crown service in Hicksville, with most Gelco cap replacements and crown repairs completed in a single visit after our Level-2 camera inspection. As an independent Gelco service provider, we stock the Gelco Ultra-Pro series and multi-flue models most common in Nassau County split-levels and Cape Cods, and we quote upfront so the number on the estimate matches the number on the invoice. Typical Gelco cap installation runs $340-$620; crown repair or coating runs $480-$1,200 depending on access and extent. If you are seeing rust streaks down your brick, hearing wildlife in the flue, or noticing mortar crumbs in your firebox, your Gelco cap or crown is telling you something. Call (516) 259-3797 - a live person answers, 24 hours a day.
How Gelco Products Fail - and How We Fix Them
- Gelco Ultra-Pro single-flue caps (Model 8″-13″ round): The 304 stainless mesh on these corrodes faster than expected in Hicksville’s salt-air environment, especially within two miles of the LIRR corridor where winter road salt lingers in the soil. We see the mesh detach at the weld points after 6-10 years, not the 15-20 years the homeowner expected. We replace with Gelco OEM mesh or upgrade to 316L marine-grade equivalent when the flue gas chemistry warrants it.
- Gelco multi-flue caps (Models M-8 through M-16): The cross-break lid design pools water if the chimney crown beneath it has settled even 1/8 inch out of level. In Hicksville’s freeze-thaw cycles, that pooled water works its way under the cap skirt and accelerates crown spalling. We remove the cap, re-pitch or repair the crown, then reinstall with a bead of high-temp silicone at the skirt edge - not the factory gasket alone.
- Gelco band-around-brick mounting systems: The stainless band loosens as the chimney shifts through seasonal cycles, particularly on 1950s and 60s Hicksville ranches with shallow footings. A loose band lets the cap rattle in wind, and the noise is usually what gets the homeowner’s attention. We re-secure with expansion anchors into the crown or switch to a flue-top mount if the flue tile is sound.
- Gelco crown coat compatibility failures: Homeowners sometimes apply generic elastomeric crown sealers over Gelco’s factory crown coat, not realizing Gelco’s formulation is silane-siloxane based and incompatible with acrylic latex products. The result is alligatoring within two seasons. We strip the incompatible material and reapply Gelco CrownSeal or HeatShield CrownCoat, which bond properly to the original substrate.
- Gelco wind-load failures on raised flues: The Ultra-Pro and multi-flue models are rated to 85 mph, but Hicksville’s nor’easters and summer thunderstorm downdrafts can exceed localized loads on chimneys above the tree line, particularly in the areas north of Old Country Road. We inspect anchor points after every significant weather event and upgrade to through-bolt mounting where the flue tile structure allows.
Our Gelco Chimney Cap & Crown Process
- 1
Call and schedule: A live person answers, day or night. We book a window that works for you, not a four-hour guess.
- 2
Level-2 camera inspection: Our technician runs a camera the full flue length before touching the cap or crown. You see the photos. We explain what we see in plain English - no jargon, no pressure.
- 3
Parts decision: If your Gelco cap is repairable, we say so. If replacement is honest, we quote Gelco OEM or a quality aftermarket equivalent from our Olympia Chimney or Famco stock, with the trade-offs explained. The choice is yours.
- 4
The repair or installation: Background-checked, uniformed technicians complete most Gelco cap and crown jobs in a single visit. Crown work cures overnight; we schedule the return if a second trip is needed.
- 5
Post-job test and documentation: We run the camera again, show you the after photos, and leave a written report with our plain-English verdict.
- 6
The 90-Day Done Right Promise: In writing, no arguing. If it is not right, we come back. Governed by our K.E.Y.S. code: Krafted right, Every time, Your home first, Standing behind it.
What Gelco Chimney Cap & Crown Costs in Hicksville
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Gelco single-flue cap replacement | $340-$520 | Flue size, mesh grade (304 vs. 316L), access height |
| Gelco multi-flue cap replacement | $480-$720 | Chimney dimensions, band vs. flue-top mount |
| Crown repair (localized) | $480-$780 | Area of spalling, depth of cracks, need for formwork |
| Crown coating (full resurfacing) | $780-$1,200 | Chimney footprint, number of flues, material (Gelco CrownSeal vs. HeatShield) |
| Custom cap (non-standard flue or chase) | $620-$1,100 | Sheet metal gauge, copper vs. stainless, wind-load engineering |
Steep roofs, slate or tile that cannot bear foot traffic, and chimneys above 35 feet add labor time. We price this upfront, not as a surprise. Every estimate is free - call (516) 259-3797 for an exact quote.
Why Hicksville Homeowners Call Hearthstone Chimney Co. for Gelco Work
We have been on roofs in Hicksville since 1984. Russell Haines and our crew know the difference between a Gelco Ultra-Pro band mount and a flue-top mount before we climb the ladder, and we know which 1960s Levitt-era chimneys have the shallow crowns that crack predictably. Our Level-2 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 discontinued, we source from our Olympia Chimney, Famco, or Copperfield inventory rather than sell you a full system you do not need. The 90-Day Done Right Promise is in writing, no arguing. We plan to be in Hicksville in thirty more years, so we act accordingly.
FAQs
No - Gelco’s limited lifetime warranty on stainless caps covers manufacturing defects regardless of who installs it, provided the product is genuine Gelco and installed per manufacturer guidelines. As an independent Gelco service provider, we follow those guidelines and document our work so any future warranty claim is supported. Call (516) 259-3797 if you need help determining whether your cap is still under warranty coverage.
Yes, for most models from the past 20 years. Gelco maintains parts availability for the Ultra-Pro and multi-flue lines, and we stock common sizes in our Hicksville-area warehouse. For discontinued models, we fabricate compatible solutions from Olympia Chimney or Famco components that match the fit and function without compromising the flue draft. We never recommend a full system replacement when a repair is honest.
If the mesh is detached at less than 30% of its weld points and the lid is not deformed, we can repair. If the frame is rusted through, the lid is wind-damaged, or the mounting hardware has stripped threads, replacement is the honest call. Our camera inspection shows you the condition before you decide - photos you can see, a plain-English verdict. Call (516) 259-3797 for a free estimate.
A properly applied Gelco CrownSeal or HeatShield CrownCoat lasts 10-15 years in Nassau County’s freeze-thaw cycle, assuming the crown was structurally sound before coating and the chimney has a working cap to deflect water. We warranty our crown work for 90 days under the Done Right Promise and will tell you honestly if your crown is too far gone for coating - some are, and patching a failed crown is money thrown away.
Yes - a permanent 5% discount applies to all chimney cap and crown services for seniors and veterans, combined with any standing offer. We also provide free second opinions on any written estimate you have received elsewhere. The chimney doesn’t care what you hoped it was - it shows you what it is. We will show you too, without the sales pressure.
Written by Russell Haines, Owner & Master Sweep, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Hicksville and nearby areas.





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