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 Brooklyn: What to Know First
We provide independent Gelco chimney liner and rebuild work across Brooklyn, typically completing most liner replacements in one day once we’re on the roof. Pricing is straight: a stainless liner job in a Brooklyn brownstone usually runs $1,800 to $3,400 depending on flue height and access, and we give you the exact number before a single tool comes off the truck. This page is for homeowners who own a Gelco liner or are considering one and want to know what actually holds up in Brooklyn’s older masonry.
Call (516) 289-9316 and you’ll get a live person, not a call center. Wendell Pike has been working chimneys in Brooklyn since before the first Gelco liner showed up in a brownstone off Flatbush Avenue.
How Gelco Products Fail - and How We Fix Them
- Gelco 316L flexible liners in pre-war flues: Brooklyn’s pre-war chimneys have clay tile liners with offset joints and decades of mortar spalling. We regularly see Gelco flex liners that were pulled through a flue with a sharp tile edge the installer didn’t catch, scoring the liner’s outer wall. That score becomes a pinhole within five or six heating seasons. Our fix is pulling the liner, smoothing the transition points, and reinstalling a properly insulated replacement. The symptom owners notice first is a faint metallic smell near the fireplace after a big fire.
- Gelco rigid stainless sections with failed band clamps: On taller Brooklyn rowhouse chimneys, wind load is real. We’ve seen Gelco rigid liner sections where the band clamps were torqued too tight at install, deforming the connection. The liner sags and separates at the joint. We replace the damaged section and clamp to proper spec, then camera-verify the full run before we call the job done.
- Insulation wrap breakdown on older Gelco hybrid liners: Gelco’s hybrid liner systems with ceramic wrap were popular in Brooklyn about 15 years ago. The wrap degrades with repeated heating cycles, especially in chimneys that see both a furnace and a fireplace. Homeowners notice furnace flue gases condensing inside the chimney and a damp spot forming on the masonry. We strip the old liner, inspect the masonry, and install a properly sized 316L liner with a fresh insulation blanket sized for the actual BTU load, not the old guess.
- Gelco tees and caps corroded by Brooklyn’s salt air: Homes closer to the Narrows and Lower New York Bay get more salt in the air than anyone on the interior blocks realizes. Gelco’s standard galvanized caps and tees corrode faster out there. We swap in stainless versions, and if the original cap was aluminum, we recommend stainless as a replacement. The tell is white crust forming at the cap seams within three years.
- Improper liner sizing for Brooklyn heating retrofits: When a Brooklyn homeowner swaps an old oil boiler for a high-efficiency gas unit, the flue requirements change. A Gelco liner sized for the old oil burn is often too large for the new gas appliance, causing condensation and liner deterioration. We measure the actual appliance output and downsize the liner correctly. The symptom is water streaking on the masonry near the flue exit.
Our Gelco Chimney Liner & Rebuild Process
Here’s how a typical Gelco liner or rebuild job goes when you call us in Brooklyn:
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Call and talk to a person. We answer at (516) 289-9316. You tell us what’s happening. If it sounds minor, we’ll tell you what to check. If it needs eyes on it, we book a time and give you a real arrival window.
- 2
On-site camera inspection. Wendell or one of his crew runs a camera through the flue and shows you the footage. You see exactly what we see, and you get a plain-English verdict. If it doesn’t need doing, we’ll tell you that too. No invented urgency, no padding the invoice.
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Written quote before work begins. We price the job at the kitchen table, not after we’re on the roof. The number you hear on the phone is the number on the invoice. You’ll see the parts cost broken out, including whether we’re recommending OEM Gelco parts or a quality aftermarket equivalent and why.
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The work itself. We remove the old liner or damaged masonry, address whatever caused the failure, install the new liner or rebuild the flue, and insulate as needed. We use Gelco, DuraFlex, or HeatShield parts depending on the job and availability, and we’re up front about which one we’re using and why.
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Test and verify. We run the camera again after the install is complete and show you the finished run. You see the liner seated properly, the connections tight, the cap in place.
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The 90-Day Done Right Promise. Every job gets it in writing. If it’s not right, one call brings us back at no additional cost to you.
What Gelco Chimney Liner & Rebuild Costs in Brooklyn
Here’s what we see on the invoice side for Gelco work in Brooklyn, based on the jobs we’ve done across the borough:
- Stainless flexible liner replacement (typical 20-30 ft flue): $1,800 to $2,900
- Rigid stainless liner installation: $2,500 to $4,200
- Partial chimney rebuild (above the roofline): $2,800 to $5,500
- Full chimney rebuild from the firebox up: $6,000 to $12,000
- Liner insulation retrofit: $400 to $800
- Cap and tee replacement (stainless): $350 to $750
What moves the price in Brooklyn is access: scaffolding on a five-story brownstone costs more than a two-story rowhouse in Carroll Gardens. Flue height, liner diameter, and whether the chimney is interior or exterior all change the number. We give you the exact price before work starts, and we honor it. Call (516) 289-9316 for a free estimate. No trip charge inside our service area.
Why Brooklyn Homeowners Call Top Hat Chimney for Gelco Work
We’ve been doing this since 1999, and Wendell Pike puts his name on every job. That’s not a slogan; it’s his address next to his license number, published plain as day. Homeowners in Park Slope, Bay Ridge, and Flatbush call us because the national chains sent a stranger who changed the price at the door and then vanished. We’re the local alternative: the same owner, the same crew, the same phone number for over 25 years, and a 90-Day Done Right Promise stamped on every invoice. We also service DuraFlex and HeatShield liners, so if a second opinion tells you a competitor’s liner needs replacing, we can give you the straight read in plain English.
Ask anyone on your street. Someone’s already got our number.
FAQs
As an independent Gelco service provider, we install and repair Gelco liners using installation practices that keep manufacturer warranties valid, including proper sizing, insulation, and connection methods. But we are not affiliated with or authorized by Gelco, so any warranty claim goes through Gelco directly. We’ll help you with the paperwork if a defect claim comes up.
Small pinholes near the top of a flexible Gelco liner can sometimes be patched with a stainless wrap, but most liner failures we see in Brooklyn are structural: separated joints, deep scoring, or corrosion that has compromised the liner wall. If the camera shows a liner that’s still sound except for one small defect, we’ll patch it and charge you for a repair, not a replacement. If the footage shows the liner is failing in multiple places, replacement is the honest call.
Most flexible Gelco liner replacements in Brooklyn are done in a single day. Rigid liner installations and anything involving a partial or full rebuild take longer, typically two to five days depending on masonry scope and weather. We’ll give you a realistic timeline when we quote the job, and we’ll call you if it slips.
Gelco liners use standard connection hardware, but the sizing and insulation requirements are specific to each flue. Using an undersized liner or skipping insulation will shorten the liner’s life and can void the warranty. We stock Gelco and compatible aftermarket parts from DuraFlex and HeatShield, and we’ll tell you which one we’re using and why it makes sense for your chimney.
You don’t have to take anyone’s word for it. We run a camera through your full chimney and show you the footage before we recommend any work. If the masonry is sound and only the liner needs replacing, that’s what we quote. If the brick itself is spalling and the mortar joints are failing, you’ll see it in the camera footage and in the plain-English summary we give you before anything gets priced. If it doesn’t need doing, we’ll tell you that too. Call (516) 289-9316 and we’ll take a look.
Written by Wendell Pike, Owner, Top Hat Chimney at Top Hat Chimney, serving Brooklyn and nearby areas.