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 Hempstead: What to Know First
We install and repair Gelco chimney caps and crowns in Hempstead as an independent Gelco service provider, which means we work on the brand without being tied to its corporate pricing. Most Gelco cap and crown jobs we handle take one visit, and we give you the actual price before a single tool comes off the truck. If you’re seeing rust stains, a cracked crown, or water in the firebox and you own a Gelco cap, call (516) 963-1068 and Wendell Pike or one of the crew will tell you straight whether it’s a fix or a replacement.
This page is written for homeowners in Hempstead who already have Gelco equipment and want a chimney company that actually knows the brand’s weak points. Not a call center. Not a franchise that rotated in last spring. Just us, with a published address and a license number Wendell puts on every job.
How Gelco Products Fail - and How We Fix Them
- Gelco snap-lock caps lift at the corners. The Gelco snap-together cap lines, especially the stainless models from the last decade, rely on folded corner seams rather than welds. In Hempstead, where nor’easters drive rain sideways off the Atlantic, those seams spread just enough to let water track under the cap and onto the crown. We see it on at least half the Gelco caps we inspect near Hofstra University. The fix is usually a replacement with a welded-seam aftermarket cap or a Gelco cap installed with a proper silicone bed under the base, which we do every time.
- Crown hairline cracks from freeze-thaw cycling. Gelco crowns are poured concrete, and Hempstead winters do a number on them. Water gets into a hairline crack in November, freezes in January, and by March you’ve got a spalling crown edge. We can coat a crown before it crumbles using a flexible crown sealant. Once pieces are falling off, it’s a full recrown. Either way, the camera goes down the flue first so you see exactly what we see.
- Gelco multi-flue caps rust at the screen base. We’ve pulled plenty of Gelco multi-flue caps off Hempstead chimneys where the screen frame corroded at the bottom rail while the lid still looked fine. The steel mesh traps moisture and creosote dust, and ten years of Nassau County humidity does the rest. A rusted screen isn’t just ugly: it starts letting embers through. Replacement screens or full cap swaps, depending on what the metal looks like underneath.
- Undersized Gelco caps causing draft backpressure. This one’s on the original installer, not the factory. Homes in older Hempstead neighborhoods often have masonry flues that don’t match standard cap footprints. A Gelco cap that’s too tight starves the fire and pushes smoke back into the living room. We measure the flue opening before ordering or installing anything, every time. Your flue doesn’t care how the fire looks. It cares how it breathes.
- Gelco crown-coating delamination. When a crown was coated years ago with an off-the-shelf sealant instead of a proper crown coat, it peels in sheets. We’ve seen Gelco caps hiding under peeling coats along Front Street where the homeowner had no idea the crown was failing until water showed up in the ceiling below the chimney. The fix is stripping the failed coat, repairing the crown surface, and applying a breathable crown sealer that can handle Nassau County weather.
Our Gelco Chimney Cap & Crown Process
- 1
You call, a person answers. Day or night. Might be Wendell himself picking up. We ask what you’re seeing, check your address against service maps, and give you a real arrival window.
- 2
We inspect before we quote. The sweep who shows up at your door gets on the roof, pulls the cap if needed, and runs a camera down the flue. You get the footage and a plain-English verdict, every time, no exceptions.
- 3
We talk parts honestly. If your Gelco cap is under warranty, we’ll tell you what’s covered and we’ll install OEM. If it’s not, we show you the aftermarket options that match or beat Gelco factory specs and cost less. No hidden markup on parts.
- 4
We do the work without drama. Cap replacement, crown coating, custom multi-flue cap, whatever the job is. Drop cloths down, roof protected, cleanup before we leave.
- 5
We test and document. We verify draw, check for leaks, and photograph the finished work from the roof and ground level. You get the photos with your invoice.
- 6
You’re covered for 90 days. If it’s not done right, one call brings Wendell back at no additional cost. That’s the 90-Day Done Right Promise, in writing, on every single job.
What Gelco Chimney Cap & Crown Costs in Hempstead
Here’s the honest pricing picture for Gelco work in Hempstead:
- Gelco cap replacement (standard single-flue): $240-$490 installed, depending on flue size and roof access.
- Multi-flue Gelco cap replacement: $520-$950, because the base has to be custom-fitted to the crown footprint.
- Crown coating (small cracks, intact surface): $190-$380.
- Full crown rebuild (spalled, crumbling, or cracked through): $900-$1,700, including form work and curing time.
- Cap + crown combo job: $600-$1,400 depending on size and condition.
What moves the price: roof pitch, chimney height, how far gone the crown is, and whether we need a custom cap fabricated for an odd-sized flue. We give you the exact number before work starts, and if you have a written estimate from anyone else, bring it in for a free second opinion. Call (516) 963-1068 for a free estimate. No trip charge inside the county.
Why Hempstead Homeowners Call Top Hat Chimney for Gelco Work
We’ve been cleaning and repairing chimneys around Hempstead since 1999. That’s over 29 years of driving the same roads, seeing the same roofs, and running into the same folks at the hardware store. Wendell grew up in San Diego, but he’s spent the better part of two decades driving out to Hempstead and the surrounding area, including plenty of calls near Hofstra University where older homes and older chimneys tend to go hand in hand. Ask anyone on your street.
When you call about a Gelco cap or crown, the person on the phone knows the brand. We carry parts or can get them fast, and we have two solid backups if Gelco itself isn’t the right fit for your chimney: DuraFlex liners and HeatShield resurfacing. We won’t sell you a liner if your crown is the problem, and we won’t tell you a cap fixes a cracked flue. If it doesn’t need doing, Wendell will tell you. The 90-Day Done Right Promise is stamped on every job, and every call gets answered by a live person, around the clock. No voicemail box, no call center, no number changing at the door.
FAQs
Most standard Gelco cap replacements happen within 3 to 5 business days of your call, depending on roof access and part availability. Call (516) 963-1068 and we’ll give you a specific window.
It depends on the failure. Lifted corner seams and rusted screen bases usually mean replacement. Loose screws or a small tear in the screen can often be repaired. We’ll show you the damage on camera before recommending either way.
We use genuine Gelco parts when they’re the best fit for the job and available within a reasonable timeframe. When a quality aftermarket part matches or beats the factory spec at a lower price, we tell you that up front and let you decide. No markup games.
If your Gelco cap is still under warranty, we’ll flag it before touching anything. Some warranty terms require OEM parts or specific installation methods. We’ll read the fine print with you and work within it.
Water keeps getting in, and freeze-thaw cycles in Hempstead winters keep widening the crack. Eventually the crown spalls, water reaches the flue liner, and you’re looking at a liner job, not a crown job. A $300 crown coating today beats a $2,000 liner replacement in three years. Call (516) 963-1068 and we’ll give you an honest read on whether it can wait or needs attention now.
Written by Wendell Pike, Owner, Top Hat Chimney at Top Hat Chimney, serving Hempstead and nearby areas.





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