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 Liner & Rebuild in Financial District: What to Know First
Gelco chimney liner and rebuild work in Financial District typically runs $2,400-$6,800 depending on flue height, liner condition, and whether masonry rebuild is needed. Most Gelco liner replacements in the neighborhood’s converted loft buildings and older walk-ups take one full day on-site, with a written price before any work starts. We’re an independent service provider, not a Gelco-authorized shop, which matters because we’ll tell you plainly when a genuine Gelco part is worth the cost and when a DuraFlex or HeatShield liner does the same job for less. This page is for building owners and homeowners in Financial District who already know their chimney has a Gelco liner or suspect it does, and want to know what’s actually wrong and what it costs to fix. Call (551) 213-4778 for a free estimate.

How Gelco Products Fail - and How We Fix Them
Gelco makes solid products, but every liner line has its failure pattern. Here’s what we see most in Financial District, where buildings lean old and weather hits liner caps hard.
- Gelco Flex-Liner Pro: kinked installation from tight flue offsets. This is the most common Gelco issue we find in Financial District. The original installer forced the flex liner through an off-center smoke chamber or a narrow clay tile offset. The kink becomes a creosote trap within two seasons, and a chimney fire risk after that. We pull the liner, inspect the smoke chamber with the camera, and often re-route with a properly sized ovalized section instead of forcing round pipe. The fix is a re-install, not a product defect, but the difference in draft is immediate.
- Gelco Insul-Liner: cracked insulation jacket exposing the corrugated wall. We see this on Financial District rooftops where the liner cap wasn’t sealed properly and water tracked down between the insulation and the steel. The jacket cracks, condensation forms, and the liner gets surface rust that weakens over time. Our fix: we replace the full liner section, seal the cap with a proper storm collar and weather-shield, and document it with the camera before and after. The old insulation never goes back in.
- Gelco Masonry Flex with missing or failing top plate. The top plate is the flat steel ring that anchors the liner at the flue mouth. When it’s not sealed, wind-driven rain pours down the outside of the liner and rots the chimney crown from the inside. We find this a lot on Financial District buildings with parapet walls that channel roof runoff toward the chimney. We install a proper Gelco-compatible or aftermarket top plate, rebuild the crown if the wash is spalled, and reset the cap.
- Gelco Rigid-Liner: corrosion at the tee connection. Rigid liners installed with a cleanout tee at the base of the smoke chamber often show corrosion there first. The tee takes the brunt of acidic flue gas condensation, especially in older Financial District homes with oversized flues and weak draft. We inspect the tee with camera every visit. If the steel wall has lost thickness, we replace the tee section. If the corrosion is isolated, we’ll say so and give you a written timeline for when it should be done.
- Gelco liner paired with the wrong cap size. This is an installer error we see all over Financial District. A standard cap on a Gelco liner that’s been oversized for the boiler flue creates a venturi effect that cools the flue gas and accelerates condensation. We see corrosion six years in that should have taken twenty. The fix is a correctly sized cap matched to the liner diameter and the appliance BTU rating, not just a swap of the liner. We do that calculation on every job before the parts decision.
Our Gelco Chimney Liner & Rebuild Process

Here’s what actually happens when you call us for Gelco liner or rebuild work in Financial District. No guesswork, no surprise pricing, no work described to you that you can’t see for yourself.
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Phone call and discovery. You call (551) 213-4778. We ask about the building, the age of the liner, what made you call, and what appliances vent into the flue. We set a confirmed appointment window and assign a named tech.
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Camera-scan inspection (NFPA 211 Level 2). The tech arrives background-checked and in uniform, runs the camera down the entire flue from the cap to the cleanout, and photographs everything. This is a Level 2 inspection, not a flashlight look. You see every photo on the tablet before any recommendation is made.
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Written findings and written price. We give you a written scope, written price, and written warranty before anything gets scheduled. That means the liner condition, the smoke chamber, the crown, the cap, and the flue measurements in writing. You see the photos and we explain what they show.
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Parts decision, together. If a Gelco liner is being replaced, we discuss OEM vs aftermarket honestly. Some jobs genuinely want the Gelco part. Other times, a DuraFlex or HeatShield liner installed to the same spec gives you equal performance for less money. We don’t earn a kickback either way, and we’ll tell you the price difference in writing.
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Repair or rebuild, one day on-site. The liner goes in, the crown gets rebuilt if needed, the cap is set, and the flue is tested. We show you the after-photos and the draft reading before we leave.
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Documented record and the written warranty. You walk away with photos, camera footage, a written scope of what was done, and a written warranty. Clause 4 of the Haven Standard requires that record on every job. It’s been our standard since 2009, and we don’t make exceptions.
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AfterWhat Gelco Chimney Liner & Rebuild Costs in Financial District
Here’s the honest price picture for Gelco work in Financial District. These are real starting ranges from our written estimates, not bait numbers.
- Gelco flex liner replacement, single flue, standard height: $2,400-$3,800 depending on flue length and access.
- Gelco rigid liner section replacement (tee, top plate, or insulated section): $900-$1,800 including labor.
- Chimney crown rebuild with liner reset: $1,200-$2,400 depending on wash condition and masonry work.
- Full chimney rebuild (upper 5-10 courses) with liner replacement: $4,800-$6,800 including scaffolding, materials, and cleanup.
What moves the price: roofline height, whether scaffolding is needed, flue access through the interior, and whether the existing Gelco liner can be salvaged or must be fully removed. We price every job in writing before the work starts, and we’re glad to give a free estimate on the phone or after a camera inspection. If you have a written estimate from another company, bring it, and we’ll give you a free second opinion in writing.
Why Financial District Homeowners Call Level Two Chimney Financial District for Gelco Work

Financial District owners call us because we name what we found and what it costs before we ask for anything. We’re the company that made a camera-scan documentation standard in 2009, years before insurers and regulators were asking for it. That’s why we’ve handled over 38,000 chimney inspections and cleanings since then, every one with a written price before work started and a documented photo record when it was done. We install Gelco liners, and we also work with DuraFlex and HeatShield when the job calls for it, so we’re not tied to one brand’s price sheet. The 365-Day Done Right Promise is a line on every written warranty we issue: if it’s not done right, we make it right. That’s not a slogan. It’s Clause 1 of the Haven Standard, and it’s been our operating rule since the beginning. Calls are answered by a live person, 24/7, not a voicemail and not a web form. We keep the same tech named on the job from the first call to the final photo.
FAQs
Not always, and we tell you that before we open the wall. Most Gelco warranties cover manufacturing defects, not installation, and most of what we see in Financial District is installation-related failure, not manufacturing failure. If your liner failure is a genuine manufacturing defect, we’ll document it with the camera and give you the evidence to take to Gelco yourself. We’re an independent service provider, so we don’t file warranty claims as the manufacturer’s agent. What we do is give you a written assessment and photo record that supports whatever warranty claim is actually valid. Call (551) 213-4778 and we’ll walk through it.
It depends on the liner condition and where the damage is. If we’re seeing isolated corrosion at the tee or the top plate, we can often replace that section and leave the rest of the liner in place. We’ll show you the camera footage and give you a written recommendation. If the liner has multiple failure points or the corrugated wall has visible thinning throughout, full replacement is usually the honest call. We don’t charge extra for the inspection, and we won’t recommend work you don’t need. Call (551) 213-4778 to schedule an inspection.
Most single-flue Gelco liner replacements in Financial District take one full day on-site. That includes camera inspection, removal of the old liner, installation and sealing, testing, and the written photo record. Full chimney rebuilds that involve masonry work take two to three days depending on weather and access. We schedule the work in writing with a named tech and text you when the crew is on the way. Call (551) 213-4778 for a confirmed date.
Sometimes, and we’ll tell you honestly if that’s the case. We don’t push liner replacement when a section repair or a proper cap reinstallation solves the problem. The camera shows us exactly what’s failing, and we’ll show you the same footage. If the liner wall is still sound and the issue is a bad top plate or a corroded tee, repair is the right fix and we’ll write it that way. If the liner has already lost wall thickness, replacement is cheaper now than a chimney fire later. Call (551) 213-4778 for a free estimate and we’ll give you our read.
The camera doesn’t guess, and neither do we. A generalist company often checks the chimney with a flashlight and recommends work based on what they assume. We run a Level 2 camera-scan on every visit, which shows the full liner wall, the tee, the cap, and the smoke chamber, and we keep that footage as part of your documented record. When we say your Gelco liner needs replacement, we can point to the exact spot on the camera image and tell you what we’re seeing. Corrine Halstead, our owner, built the company around that practice, and it’s why we require a photo record on every job. Call (551) 213-4778 and we’ll show you what we mean.
Written by Corrine Halstead, Owner, Level Two Chimney Financial District at Level Two Chimney Financial District, serving Financial District and nearby areas.





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