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.
Before
After
Before
After
Before
AfterWhy Yonkers Homeowners Choose Gelco Chimney Cleaning
We provide independent Yonkers Gelco service for chimney cleaning, repair, and maintenance, with a focus on the pre-war masonry chimneys that dominate neighborhoods like Park Hill, Nodine Hill, and southwest Yonkers. What makes our Gelco work different is the camera: every visit includes a documented photo record of the flue before and after we work, so you see exactly what we found and what we did. We’re not affiliated with or authorized by Gelco. We’re an independent service provider, which means we recommend what the flue actually needs, not what a manufacturer’s marketing calendar wants us to push. Call (551) 212-3526 for a written price before any work starts.
Why Trust Level Two Chimney Yonkers for Your Gelco Chimney Cleaning?
Corrine Halstead, Owner at Level Two Chimney Yonkers, picked up her first wire brush in a vocational program at Bronx Community College and spent the better part of two decades doing hands-on chimney work across Westchester County before founding this company. She and her crew have cleaned and inspected fireplaces in homes along the Yonkers waterfront near the Hudson River Museum corridor, in older colonials, in narrow row houses, all with the same rule: camera before, camera after, written price on paper before anyone touches anything. The camera doesn’t lie, and neither does the quote.
Our techs rebuild and maintain Gelco chimney systems daily across Yonkers and nearby towns like Eastchester. That means we know Gelco Insul-Flue liner corrugation patterns, Gelco CrownCoat failure points, TopSeal damper cable wear, and the rust pattern on a Gelco cover that’s been eating Hudson River salt air for a decade. We install Genuine Gelco replacement parts when available, and when a part is discontinued we fabricate matching stainless steel or aluminum components with equal gauge and flange geometry, so the repair doesn’t become a compromise. Every job is quoted in writing before work begins, includes a documented photo record on completion, and is backed by the 365-Day Done Right Promise: if it’s not done right, we make it right.
Clause 4 of the Haven Standard requires a photo record on every job. That’s not an add-on here. It’s the default, and it has been since 2009.
Common Gelco Chimney Cleaning Problems We Fix in Yonkers
- Gelco Insul-Flue liner cracking at corrugation peaks. Repeated thermal cycling in older Yonkers masonry chimneys stresses the corrugated stainless steel at its thinnest points. We regularly find hairline cracks at the peaks of the corrugation, usually within 8 to 14 years of installation in homes that burn every weekend through the heating season. The fix depends on the extent: under 30% cracking can sometimes be addressed with targeted repair, but beyond that, replacement is the honest answer.
- Gelco CrownCoat peeling away from improperly prepared crowns. CrownCoat is only as good as the surface under it. We see peeling on crowns that were never properly cleaned, profiled, or primed before the coating went on. Once water gets under the coating, freeze-thaw cycling in Yonkers winters works the material loose in sheets. We strip the failed coating, repair the crown with a proper concrete mix, and reapply with correct surface prep.
- Gelco TopSeal damper cables fraying and snapping at the pulley guide. This is the most common TopSeal failure we see. The cable rubs against the pulley guide every time the damper is opened or closed, and eventually the strands fray and snap. The damper then sticks, often half-open, which drafts poorly and can let creosote-laden smoke back into the house. We replace the cable with a stainless steel version and adjust the pulley arm geometry to stop the fraying at the bend.
- Gelco chimney covers rusting at the galvanized seams. On salt-air exposed rooftops along the Hudson River corridor, galvanized seams on older Gelco covers corrode faster than the rest of the unit. We see rust-through at the frame corners and the screen edges, particularly on riverfront properties. If the frame has rusted through, we don’t patch it. We replace the cover with a properly sized stainless steel or aluminum unit matched to your flue tile dimensions.
- Flue misidentification in shared rowhouse stacks. In the dense rowhouse blocks of southwest Yonkers, neighboring properties often share a single exterior masonry chimney stack with multiple unmarked flues. Owners routinely don’t know which flue connects to which appliance. Yonkers’ building department requires correct flue identification on permits, so flue mapping is a necessary and billable step before any cleaning or liner work can be signed off. We do that mapping first, document it, and include it in your written record.
BeforeAfterGelco Parts & Our Repair-vs-Replace Approach
We install Genuine Gelco replacement parts when they’re available. For discontinued covers or liners, we fabricate matching stainless steel or aluminum components with equal gauge and flange geometry, so the repaired unit performs as it should. We don’t do cheap patch jobs that look fine from the ground and fail from the roof.
Our decision on repair versus replacement is simple and we’ll show you the evidence. If a Gelco liner has more than 30% corrugation cracking or the cover has rusted through at the frame, replacement is more cost-effective than patch repair. You’ll see the camera footage yourself. If the damage is less than that and the underlying structure is sound, we’ll repair it and document exactly what we did. A Gelco chimney cleaning in Yonkers typically runs $180 to $340, depending on flue condition and access. Call (551) 212-3526 for an exact written quote, free.
Our Gelco Service Process - Step by Step
- 1
Diagnosis. We map your flues, run the camera down the entire length, and identify the exact Gelco product installed, its condition, and any failure modes we can see. You get the photos and the plain-language explanation of what they show.
- 2
Written scope and price. Before any work starts, you receive a written price, written scope, and written warranty. No one starts until you approve it. H.A.V.E.N. Clause 1: Have it in writing.
- 3
Repair or install. We complete the work using Genuine Gelco parts where available, or our fabricated equal-gauge components. We protect the work area and clean up completely.
- 4
Test. We verify draft, damper operation, and any new installation with the camera before we leave.
- 5
Documented record. You walk away with photos, camera footage, readings, written scope, and written warranty. Clause 4 of the Haven Standard. It’s been our archive practice since 2009.
Gelco Products We Service & Install in Yonkers
We service and install the full Gelco product line relevant to Yonkers homes: Gelco Insul-Flue Liner, Gelco Chimney Cover, Gelco CrownCoat, and Gelco TopSeal Damper. We stock common stainless steel liners, damper cables, ferrules, and crown repair materials locally for faster turnaround. For older or odd-sized flue tiles, which are common in Yonkers’ pre-1930 housing stock, we measure on site and order the correct unit, or fabricate to fit. Our multi-brand capability also covers DuraFlex and HeatShield products, so if a Gelco-specific part isn’t the right answer for your chimney, we’re not stuck recommending it anyway.
We Also Service These Brands
While this page focuses on Gelco, we service and install a range of chimney products daily, including DuraFlex liners and HeatShield resurfacing systems. Our materials come from DuraFlex, HeatShield, Gelco, Olympia Chimney, Famco, and Copperfield, procured through Haven’s buying network specifically to keep customer prices honest. If a repair calls for a different brand than what’s currently installed, we’ll tell you why and show you the comparison.
FAQs - Gelco Chimney Cleaning Service in Yonkers
No. We are an independent Gelco service provider, not an authorized dealer or warranty center. That independence is the point. We recommend what the flue actually needs, and if that means a different brand or a fabricated part, we say so. We’ve been doing this since 2009, and the vast majority of our Gelco work comes from repeat customers and referrals.
Yes, when available. For discontinued covers or liners, we fabricate matching stainless steel or aluminum components with equal gauge and flange geometry. You’ll see the part before we install it, and it’s covered under our 365-Day Done Right Promise in writing.
A standard Gelco chimney cleaning in Yonkers takes 90 minutes to two hours, including the camera inspection and written documentation. A liner replacement, crown repair, or damper cable replacement typically takes three to six hours depending on roof access, flue condition, and whether scaffolding is required. We’ll give you a written time estimate along with the written price before we start.
We service and install Gelco Insul-Flue Liner, Gelco Chimney Cover, Gelco CrownCoat, and Gelco TopSeal Damper. If you have an older or less common Gelco unit, we can usually identify it from the camera footage and source the correct parts, or fabricate to match.
If your Gelco product is still under manufacturer warranty, a standard cleaning and inspection by an independent sweep should not void it, provided we don’t make unauthorized modifications. If we need to replace a part, we’ll use Genuine Gelco where required and document everything. If the warranty language is unclear, we’ll help you read it before we touch anything.
A Gelco chimney cleaning in Yonkers typically costs $180 to $340, depending on flue condition, creosote class, and access. That price includes the camera inspection, written photo record, and written warranty. We never charge extra for documentation, it’s standard. Call (551) 212-3526 for an exact written quote, free, and we’ll put the number on paper before anyone starts.
Gelco offers covers in a range of standard flue tile sizes, including oval options, but the pre-1930 rowhouse stacks in Yonkers often have non-standard dimensions. We measure on site, and if a stock Gelco cover won’t fit correctly, we fabricate a stainless steel or aluminum cover matched to your flue tile. Correct fit is what keeps rain, debris, and animals out. A cover that’s too big or too small is worse than none at all.
Peeling CrownCoat almost always means improper surface preparation. The crown was not cleaned, profiled, or primed correctly before the coating was applied, so it never properly bonded. In Yonkers winters, water gets under the coating, freezes, and lifts it in sheets. The fix is to strip the failed coating, repair the crown’s concrete, and reapply with correct prep. We see this pattern across Nodine Hill and Park Hill regularly.
Yes. We use the appropriate brush type and pressure for corrugated stainless steel liners. The key is not using a brush that’s too aggressive or spinning it too fast, which can score the liner and create weak points. We also document the liner’s condition with the camera before and after the sweep, so you can see exactly what was there and what we removed.
In Mount Vernon and Yonkers, a Gelco chimney cover typically lasts 8 to 15 years depending on exposure. Riverfront properties see shorter lifespans because Hudson River humidity and salt air accelerate corrosion at the galvanized seams. Interior neighborhoods away from the river can see the longer end of that range. We’ll check your cover every visit as part of the standard camera inspection.
Generally, no. Gelco TopSeal dampers are designed for open fireplaces, not wood-burning inserts, which require their own direct-connect flue systems. If you’re installing an insert, we’ll remove or disable the TopSeal and set up the liner system correctly for the appliance. On a recent 1920s colonial in Park Hill, we found a TopSeal damper cable sheared inside its guide tube, jamming the damper closed and trapping creosote-laden smoke. Our tech removed the old cable, installed a new stainless steel cable with a reinforced ferrule, and adjusted the pulley arm to stop the fraying at the bend. After a full sweep of the Insul-Flue liner, the draft normalized and the owner could operate the damper with two fingers.
Book Your Gelco Service in Yonkers, NY
You’ll get a live person on the phone, a written price before any work starts, and a documented photo record when we’re done. Call (551) 212-3526 for a free estimate on Gelco chimney cleaning, repair, or liner work in Yonkers. Corrine Halstead and our crew work across the city daily, from the riverfront rowhouses up through Park Hill and Nodine Hill. We’ll schedule your visit, confirm your tech by name, and text when we’re on the way.
Written by Corrine Halstead, Owner at Level Two Chimney Yonkers, serving Yonkers since 2009.