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 Cleaning in Seattle, CA | Flint Chimney Sweep
We provide independent Gelco chimney cleaning and repair across Seattle, and we’re the crew that puts the price and scope in writing before any work starts. The one thing that makes our Gelco service different here: we know how Seattle’s drizzle and marine air act on stainless liners, which means we don’t just sweep, we catch corrosion early enough to save you a full reline. That’s the whole reason to call us, not a generalist: (830) 251-4560.
We aren’t affiliated with Gelco, and we won’t claim otherwise. But our technicians have field-tested knowledge of their liner kits, flex liners, direct vent terminations, and multi-flue caps, and we’ve worked on enough of them in Seattle to know exactly where they fail in this climate.
Why Seattle Residents Choose Us for Gelco Service
Seattle is one of the few places in the country where a stainless steel chimney liner can rust from the outside in. That’s not a defect in the product. It’s the reality of persistent dampness, fog, and the condensation cycle that comes with it. Most chimney companies understand fire and smoke. We understand moisture, because Seattle forces you to.
Our owner, Hank Delano, grew up in Eagle Rock and studied building maintenance and construction technology at Los Angeles Trade-Technical College before putting in years of hands-on chimney work. He’s built Flint Chimney Sweep around a simple rule: tell you what’s actually wrong, show you the evidence, and never recommend work you don’t need. When we perform a Seattle Chimney Inspection on a Gelco liner, we’re looking for pinholes, seam corrosion, and rust streaking, because those are the failure patterns this city produces. And as part of the Garrison Partners family founded in 2002, every repair we do carries a written 365-Day Done Right Promise: if a covered repair fails within one full year, we return at no charge, no argument.
Common Gelco Chimney Cleaning Problems We Solve in Seattle
- Pinhole corrosion in Gelco 6″ stainless liners. Seattle’s damp air and the acidic creosote condensation that forms in cool, humid flues eat at stainless steel over time. What starts as a pinhole becomes rust streaking, draft loss, and eventually a liner you can’t safely use. We document this with camera inspection before recommending anything.
- Corroded multi-flue cap seams. Welded seams on Gelco caps take the brunt of Seattle rain. Once a seam opens, water runs straight into the flue and accelerates deterioration below. We replace with sealed alternatives that hold up better in marine air.
- Sagging or separated flex liner joints. Repeated thermal cycling, hot fire to cold damp night, stresses flex liner connections. Loose joints let combustion gases and moisture go where they shouldn’t.
- Evergreen debris clogging direct vent terminations. Seattle neighborhoods with mature evergreens send needles and cones straight into exterior vent openings. A clogged direct vent is a carbon monoxide risk, plain and simple.
- Rust streaks on chimney exteriors. When a Gelco liner corrodes, the rust often shows on the outside masonry or siding. It’s cosmetic at first, but it’s a sign the liner is wet inside, and that’s a structural concern.
Gelco Service in Seattle: What Local Conditions Mean for Your Equipment
Seattle’s frequent drizzle and high humidity mean Gelco stainless liners here develop external rust streaks that you simply don’t see in drier climates. This isn’t a manufacturing failure. It’s the result of a liner sitting in a permanently damp flue, especially in older houses where the chimney cap doesn’t fully shed rain. On a recent job in Ballard, we serviced a Gelco 6-inch stainless liner that had pinhole leaks from years of creosote condensation, causing rust stains on the chimney exterior. After a Level 2 inspection, we removed the corroded section, installed a new Gelco-compatible liner segment, and applied a waterproof sealant to prevent further moisture intrusion. The homeowner reported no more staining and improved draft.
That’s what we mean when we say local knowledge is the repair. A sweep in a dry climate would have cleaned that liner and left the corrosion in place. We’ve seen the pattern in Ballard, Fremont, and Queen Anne enough times to check for it before we ever put a brush up the flue.
Gelco Models & Products We Service in Seattle
We work on the Gelco 6″ Stainless Steel Liner Kit, the Gelco Insulated Flex Liner, the Gelco Direct Vent Termination Kit, and the Gelco Multi-Flue Cap. For critical connections, we use OEM Gelco parts when available. But we will also tell you plainly: a high-quality aftermarket liner or cap is often more cost-effective and equally durable in Seattle’s wet conditions. We are not here to sell you a brand name. We’re here to fix the problem, with parts specified by the job, not by margin. For more on our broader Gelco sales & service work, we carry the same standards across every call.
Gelco Service Pricing in Seattle
A standard Seattle Chimney Sweep typically runs $180 to $340, depending on access, roof pitch, and how much creosote has built up. A camera inspection, which we recommend on most Gelco systems before any repair, runs $150 to $300. If we find corrosion, a targeted liner section replacement starts around $400 and goes up from there based on length and access. A full Gelco-compatible liner replacement generally falls between $2,500 and $5,000, with cap replacement and waterproofing added separately.
| Service | Typical Seattle Range |
|---|---|
| Chimney sweep (standard) | $180 – $340 |
| Camera inspection | $150 – $300 |
| Liner section replacement | $400 – $1,200 |
| Full liner replacement | $2,500 – $5,000 |
| Multi-flue cap replacement | $350 – $900 |
| Chimney waterproofing | $250 – $700 |
Every job gets a written price before any work starts. That number is the number you approve, and the invoice matches it. Call (830) 251-4560 for an exact quote. Estimates are free, and you’ll talk to a live person, not a callback form.
Serving Seattle, WA - Our Local Coverage Area
We’re based in the Seattle area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – Gelco Chimney Cleaning in Seattle
No. Independent chimney technicians can legally and competently service Gelco products without manufacturer authorization. What matters is that we’ve worked on Gelco liner kits, flex liners, direct vent terminations, and multi-flue caps in Seattle for years, and we’re familiar with the specific ways they fail in this climate. We are an independent Gelco service provider, not a manufacturer affiliate, and we’ll tell you that upfront.
Seattle rain, combined with the city’s persistent dampness, corrodes welded seams on Gelco multi-flue caps faster than in drier regions. Once a seam opens, water flows into the flue, accelerating liner corrosion below. Replacing the cap with a properly sealed unit and applying masonry waterproofing is usually the fix. Call (830) 251-4560 for an inspection, and we’ll show you exactly what the cap looks like before recommending anything.
In many Seattle homes, we can replace just the corroded section of a Gelco liner, provided the rest of the liner is structurally sound and the damage is localized. During the inspection we’ll use a camera to map the corrosion. If the pinholes are scattered across multiple sections, replacement is more reliable than patching. We’ll show you the footage and let you decide with your own eyes.
Schedule it in late spring or early summer, after the burn season and before the damp fall air sets in. Seattle’s moisture works fastest when creosote sits in the liner through summer, absorbing humidity and forming the acidic condensation that causes pinholes. The longer it sits, the more corrosion you get. Book early to get on the calendar before fall rush. Call (830) 251-4560 and we’ll find a window that works.
Yes, in neighborhoods with mature evergreens. Exterior vent terminations on Gelco direct vent systems collect needles, cones, and moss debris that clog intake and exhaust openings. In Seattle’s damp air, that debris holds moisture and blocks airflow, which is both a draft problem and a carbon monoxide risk. We check for this on every service call in the area. For a complete service check, call (830) 251-4560.
Service Areas Near Seattle
You’ll find our trucks in the neighborhoods around Seattle, from Ballard to Fremont to Queen Anne, and across the surrounding metro. We also run Gelco service in Nashville-Davidson and Gelco service in Las Vegas. For more on our broader coverage, see our Seattle service area page.
Book Your Gelco Service in Seattle Today
We’re the crew that puts everything in writing and stands behind it for a full year. Gelco cleaning, cap replacement, waterproofing, or a full liner replacement for Seattle’s damp climate. Call (830) 251-4560 now to schedule, and we’ll tell you exactly what to expect.
Written by Hank Delano, Owner at Flint Chimney Sweep, serving Seattle and the surrounding area since 2002.