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 Lawrence: What to Know First
As an independent Gelco service provider, Top Hat Chimney repairs and replaces Gelco chimney caps and crowns throughout Lawrence, with most jobs completed in a single visit. Crown repair or a new cap typically runs $325 to $900 depending on flue size and crown condition, and we give you the exact number before any work starts. If you own a Gelco cap that’s rusted through, loose, or letting water into the flue, call (516) 604-2573, and Wendell Pike will come take a look himself.

This page is for Lawrence homeowners who have a Gelco cap or crown that needs attention and want straight answers on what’s wrong, what it costs, and whether it can wait. We’ve been working on chimneys in the Five Towns area since 1999, long enough to know which Gelco models hold up on Long Island and which ones don’t.
Key Takeaways
- Gelco caps and crowns fail in predictable ways, mostly from salt air, freeze-thaw cycles, and undersized flue tiles.
- Most Gelco cap replacements and crown repairs in Lawrence are done same-day, no second trip needed.
- We use Gelco OEM parts when available, but quality aftermarket stainless caps often outlast the original.
- Every job is backed by our written 90-Day Done Right Promise. If it’s not right, one call brings Wendell back.
How Gelco Products Fail in Lawrence, and How We Fix Them
We see a lot of Gelco caps in Lawrence that were installed in the early 2000s, back when clay tile liners were still standard and stainless steel wasn’t what it is today. Here’s what we find when we get up on the roof.
- Gelco galvanized cap base rust-through at the bolt points. The cap itself may look fine from the ground, but the galvanized base where it attaches to the flue tile is often the first thing to go. Once those bolts corrode, the cap shifts, water gets in, and the crown starts to spall. Fix: remove the old cap, wire-brush the flue top, install a new stainless base with new hardware. We see this most on older Gelco caps that pre-date the current stainless-series designs.
- Cracked crown from freeze-thaw, especially on older Gelco multi-flue setups. Lawrence winters aren’t brutal, but we float around freezing enough nights that water gets into hairline cracks, freezes, and pops chunks off the crown. That’s why we recommend a crown coat as part of most cap replacements, even when the crown looks okay from the ground. We seal it with a waterproof membrane and build up the slope so water runs off instead of pooling. We see this constantly on Gelco multi-flue caps where one crown covers two or more flues, and every flue top settles at a slightly different rate.
- Gelco wire mesh screens pulling loose from the cap frame. The mesh is what keeps squirrels and birds out of the flue, but on older Gelco caps the mesh is often just crimped into place, not welded. After a few years of wind and weather, the crimp loosens and the mesh bulges out, leaving gaps. Squirrels find those gaps fast. Fix: replace the cap, or if the frame is still solid, we can rebuild the mesh with welded stainless. Squirrels are stubborn. Wire ties don’t hold.
- Crown deterioration from acid-laden rainwater running off a rusting cap. When the Gelco cap rusts, the runoff stains the crown with iron and eats away the concrete over time. By the time we’re called, the crown often needs more than a coat. We grind off the loose material, reslope the crown, and seal it. The new cap is stainless, so the runoff problem stops for good.
- Undersized flue tile exposed by a collapsing Gelco cap base. We inspect the flue tile top with every cap replacement. If the tile is cracked or spalling, slapping a new cap on top just delays the bigger repair. In Lawrence, many pre-1970 homes still have the original clay tile, and it’s rough. We tell you plainly if the flue can wait or if we should sleeve it now, and we’ll show you the camera footage to prove it.
One thing worth knowing: Gelco caps installed before roughly 2010 often used thinner stainless than what’s standard now. If you’re not sure what you have, ask Wendell to look at it. He’ll tell you if it’s clean or if it’s time. If it’s clean, he’ll tell you it’s clean.
Our Gelco Chimney Cap & Crown Process
- 1
You call (516) 604-2573. A live person answers, twenty-four hours a day. It might be Wendell. We ask what you’re seeing, if you’ve noticed water stains, and whether the cap looks crooked from the ground.
- 2
We schedule an in-county visit with no trip charge. Wendell or one of his crew arrives in uniform, in a real window. If traffic is bad, we call.
- 3
We get on the roof and pull the cap. We inspect the flue tile top, the crown condition, the cap base, and the mesh. We take photos. Every job gets camera inspection and a photo report, no exceptions.
- 4
We make a parts decision: OEM or better aftermarket. If your Gelco cap can safely be repaired, we say so. If it’s done, we recommend a stainless replacement. Sometimes the best cap for a Lawrence chimney isn’t a Gelco at all. We’ll explain why and show you the difference in writing before any work starts.
- 5
We repair or replace, then seal the crown as needed. Everything gets wet-tested if possible, and the flue gets checked for draft before we climb down. If the crown needs a membrane coat, it’s included in the quote.
- 6
Walkthrough and 90-Day Done Right Promise. We walk you through what we found and what we did, give you the photo report, and the written promise. If anything isn’t right, one call brings us back at no charge.
What Gelco Chimney Cap & Crown Costs in Lawrence
Pricing in Lawrence runs close to what we charge across Nassau County. A standard single-flue stainless cap replacement usually falls between $325 and $550, including removal of the old cap and new hardware. If you have a multi-flue Gelco setup, figure $600 to $900, sometimes more if it’s a custom size or a hip-and-ridge roof that’s hard to access.
A crown repair or coating alone typically runs $400 to $750, depending on how much grinding and resloping the crown needs. If we’re already up there replacing a cap, adding a crown coat usually adds $150 to $250 to the total. What moves the price: roof pitch, access, flue tile condition, and whether we’re patching or replacing the crown. Call (516) 604-2573 for an exact quote before any tool comes off the truck. Estimates are always free.
Why Lawrence Homeowners Call Top Hat Chimney for Gelco Work
We’ve been serving Lawrence and the Five Towns since 1999. Wendell Pike started Top Hat Chimney as a solo sweep, and he still puts his name on every job. The number you hear on the phone is the number on the invoice, and the sweep who shows up at your door is background-checked, uniformed, and likely someone you’ll run into at the deli on Saturday. Your flue doesn’t care how the fire looks. It cares how it breathes. We treat it that way.
We also service DuraFlex and HeatShield products, so if your Gelco cap is fine but the flue liner needs a sleeve or coating, we’ll tell you straight and handle it in the same visit. We stand behind everything with a written 90-Day Done Right Promise: if it’s not done right, one call brings us back. Ask anyone on your street.
FAQs
Once a year, burn or no burn. Chimneys break in the off-season too. Lawrence’s salt air and freeze-thaw cycles mean caps and crowns degrade even when the fireplace is never used. A quick inspection catches loose mesh and hairline crown cracks before water gets into the flue. Call (516) 604-2573 to schedule, and remember there is no trip charge inside the county.
No, not if the work is done correctly. Gelco’s warranty covers the original cap, not the chimney system around it, and a properly installed stainless aftermarket cap won’t affect any remaining coverage. That said, we can source Gelco OEM parts when you want an exact match. We’ll show you both options and the price difference in writing before any work starts.
If the crown has hairline cracks but is still solid underneath, a waterproof membrane coat usually solves it. If chunks are missing and the concrete is crumbling, it needs grinding and rebuilding. We make that call with camera footage and show you exactly what we see. Nothing gets recommended without proof. If the crown can wait, we tell you it can wait.
Most standard cap replacements and crown repairs in Lawrence are done in one visit. We bring common Gelco cap sizes and stainless stock on the truck. If yours is a custom multi-flue size, we may need to measure and come back for installation, but we’ll tell you that before the first visit. Call (516) 604-2573 and we’ll let you know what to expect.
That’s a live person, every hour, every day. It’s likely Wendell picking up himself. No voicemail box, no national call center. If you’re staring at a water stain at 10 p.m., you’ll get an actual human being on the line, and we’ll set up a visit that works for you. Call (516) 604-2573 anytime.
Written by Wendell Pike, Owner, Top Hat Chimney at Top Hat Chimney, serving Lawrence and nearby areas.





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