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 Repair in New York: What to Know First
We repair Gelco chimney systems across New York, from Manhattan brownstones to Queens brick row houses, and most jobs are completed in one visit with parts on the truck. A typical Gelco repair in New York runs $280 to $1,200 depending on whether it’s a flue tile joint, a crown reseal, or flashing work, and you get a written price before we touch anything. If you own a Gelco fireplace or chimney system and something’s leaking, drafting poorly, or showing rust, call (551) 213-5548 and we’ll schedule an inspection with a camera down the flue. This page is for homeowners who want to know exactly what’s wrong, what it costs, and whether it can wait.

How Gelco Products Fail - and How We Fix Them
Gelco chimney systems are built around factory-fabricated flue liners and prefabricated chase assemblies, which means their failure modes are different from a traditional masonry flue. Here’s what we actually see on New York roofs and in New York flues:
- Gelco flue liner joint separation at the first offset. Gelco’s stainless liners are joined with compression bands that can pull apart when the chase settles or when New York freeze-thaw cycles work the flashing. The symptom is usually a musty smell in the firebox or water staining on the ceiling below the chase. We drop a camera, measure the gap, and either reset the joint or install a listed liner repair sleeve if the separation is severe.
- Chase top pan rust-through on older Gelco chase installations. Gelco chase pans were often fabricated from galvanized steel rather than stainless, and after eight to ten New York winters they develop pinholes that let water run down the outside of the liner. The fix is a fabricated stainless replacement pan with a proper drip edge, not a patch. We see this most often on Gelco systems installed in the late 2000s and early 2010s across Staten Island and the Bronx.
- Gelco termination cap screen blockage. The mesh screen on Gelco termination caps is fine enough to clog with creosote, soot, and even windblown leaves in New York’s fall. The system starts drafting poorly, smoke rolls into the room, and the owner assumes the flue is blocked. Often it’s just the cap screen. We remove it, clean it, and check the cap’s inner baffle for corrosion while we’re up there.
- Factory caulk failure at Gelco chase seams, particularly on the Gelco SB series. The vertical seams where Gelco chase panels meet are sealed at the factory, but New York’s summer humidity followed by winter cold causes the caulk to shrink and crack. Water gets into the chase cavity and starts rusting the liner’s outer wall. We strip the old caulk, inspect the seam, and reseal with a commercial-grade polyurethane that survives thermal expansion.
- Improper fireplace-to-liner connection on Gelco inserts retrofitted into existing masonry chimneys. When a Gelco insert is dropped into an older New York chimney without adapting the existing flue, the connection point becomes a creosote trap. Two inches of misalignment can cause Class II creosote to build up in months, not years. We inspect the connection point with the camera, measure the offset, and install a flexible or rigid adapter so the transition is gas-tight and smooth.
Our Gelco Chimney Repair Process

Every Gelco repair we do in New York follows the same path, and it starts with documentation, not a pitch:
- 1
Camera scan first. Before any repair, we send a camera down the flue and record the full run, including the connection point, joints, and termination. You see the footage before we discuss a single repair.
- 2
Written scope and price. We write down exactly what’s wrong, what we’ll do, what parts we’ll use, and what it costs. Clause 1 of the Haven Standard says a written price before work starts is not optional. It’s not optional.
- 3
Parts decision, made with you. For Gelco systems, we prefer OEM Gelco parts where available, especially termination caps and chase components. Where OEM is backordered or discontinued, we use listed aftermarket parts from our normal supply chain, which includes DuraFlex and HeatShield for liner materials, and we show you the spec sheet before we install.
- 4
The repair. Our crews in New York are uniformed and background-checked, and a named technician is on your job. You get a text when they’re on the way.
- 5
Test, verify, document. After the repair we do a draft test, a smoke test where appropriate, and a final camera pass. You get the photos and the written record when we’re done, not when you ask for them.
- 6
The 365-Day Done Right Promise. If a Gelco repair we installed fails within a year, we come back and make it right at no charge. It’s stamped on every job, not hidden in fine print.
Before
AfterWhat Gelco Chimney Repair Costs in New York
Here are the prices we see for common Gelco chimney repairs in New York, written in dollars because that’s how we quote:
- Flue liner joint reset or repair at the first offset: $280 to $480
- Chase top pan replacement with stainless fabrication: $650 to $1,100
- Termination cap replacement or screen clean-and-repair: $180 to $420
- Chase seam reseal, full perimeter: $350 to $600
- Insert-to-liner adapter installation: $400 to $800
- Camera scan and Level 2 inspection, no repair: $149 to $249
What moves the price: roof access difficulty in Manhattan or brownstone neighborhoods, chase height, whether we need a boom lift or can work from a ladder, and parts availability. Gelco parts are generally available, but some older models require a fabrication step. Every estimate is free, and if you have a competitor’s written quote, bring it. We’ll give you a second opinion for free, no obligation. Call (551) 213-5548.
Why New York Homeowners Call Level Two Chimney New York for Gelco Work

We’ve inspected and cleaned more than 38,000 chimneys since 2009, and every single one included a camera scan and a documented photo record. That’s not a premium add-on. Clause 4 of the Haven Standard requires it, and we’ve done it that way since before most New York homeowners knew to ask. When we work on a Gelco system, we’re not guessing at the brand’s failure modes; we’ve seen enough of them across Staten Island, Queens, Brooklyn, and the Bronx to know what a Gelco flue looks like when it’s failing and what it looks like when it’s fine. And if a Gelco repair reaches a point where the original liner can’t be saved, we can offer DuraFlex and HeatShield reline options from the same supply chain, so you’re never stuck with one manufacturer’s answer. Corrine Halstead runs this shop, and the principle she’s held since day one is simple: “The camera doesn’t argue with you, and neither does the price sheet.”
As an independent Gelco service provider, we are not affiliated with or authorized by Gelco, and we don’t claim to be. We compete on evidence and price, not a logo. If you’re in New York and you want someone who treats a Gelco chimney as a system to diagnose, not a box to swipe a card on, we’re the call.
FAQs
No. Gelco warranties cover defects in materials and workmanship, and using a licensed, insured chimney company for routine repair does not, by itself, void that warranty. What voids warranties is improper installation or the use of unlisted parts. We document everything, including the parts and their spec sheets, so if you ever need to file a claim with Gelco, you have a record. Call (551) 213-5548 if you want us to look at a warranty question on your Gelco system.
Most Gelco chimney repairs we handle in New York are completed within 3 to 5 business days of the initial inspection, and many are done same-day if the parts are on the truck. Parts for Gelco systems are generally available through our supply chain, but older or discontinued models may need a few extra days for fabrication. We’ll tell you the timeline in writing before work begins, and it’s reliable.
We don’t recommend it. Chimney repairs involve working at height, often on New York roofs with pitches that are steeper than they look from the street, and the connections inside a flue are under real thermal stress. A bad repair to a Gelco liner joint or chase seam can make a small water leak into a much bigger one. If you want to get on your roof and inspect the visible chase, that’s reasonable; we’d rather you call us for the repair. Estimates are free at (551) 213-5548.
Repair means fixing a specific failure point, like a separated joint at the first offset or a corroded section of chase pan, without touching the rest of the system. Replacement means pulling the old liner and installing a new one, which we quote only when the existing liner is cracked through, perforated, or beyond safe service. We don’t recommend replacement unless the camera evidence is clear, and we’ll show you that evidence before we recommend anything. If replacement is genuinely needed, we can price DuraFlex and HeatShield options alongside Gelco so you have a real comparison.
Water intrusion through a failed chase pan or seam will keep working its way down, and in New York’s freeze-thaw climate, one winter is enough to take a minor leak and turn it into spalling brick, rusted flashing, and damage to the ceiling below the chase. In a wood-burning Gelco system, a clogged cap screen or a misaligned liner connection can also create creosote buildup that increases fire risk. Most Gelco repairs are $300 to $800 when caught early and several times that when deferred. Call (551) 213-5548 for a camera inspection and a written price. It’s the fastest way to know if your Gelco chimney can wait or shouldn’t.
Written by Corrine Halstead, Owner, Level Two Chimney New York at Level Two Chimney New York, serving New York and nearby areas.





Before
After
Before
After