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
AfterGelco Flue Liner Replacement: The Westchester County Owner’s Guide
If you have a Gelco flue liner that’s cracked, pitted, or pulling away at the seams, we stock Gelco-compatible replacement liners and install them throughout Westchester County. A typical Gelco flue liner replacement runs $1,400 to $2,800 installed depending on length, diameter, and whether we’re doing a straight swap or rebuilding the top plate. You’ll usually know something’s wrong because you’ll see flaky rust-colored material dropping into the firebox, smell a sharper smoke odor than you used to, or notice the damper doesn’t seat the way it once did.
Which Gelco Models This Applies To
Gelco makes two liner families we see most in Westchester County chimneys: their standard 300-series single-wall stainless and the heavier double-wall insulated variant. The quickest way to identify yours is to look at the top plate or the tag riveted near the cap. That tag will show the diameter, usually 6″, 7″, or 8″, and the series number. If the tag is gone, we measure the old liner’s inner diameter with calipers before anything gets ordered. One thing that catches people: Gelco’s 7″ liners do not interchange with their 6″ or 8″ components even if they look close at a glance. The top plates, the termination caps, the locking bands are all diameter-specific. We are an independent service provider, not affiliated with Gelco, and we’ll tell you plainly when a quality aftermarket liner does the exact same job for less. In most Westchester County homes, the 300-series with a proper sleeve and cap is fine. If your chimney runs through an unheated exterior chase, we’ll suggest the double-wall version, because New York winters will condense acidic water inside a single-wall liner faster than you’d believe.
Signs Your Gelco Flue Liner Replacement Is Failing
- Metallic flakes or rust-colored grit in the firebox. This is the liner’s inner wall shedding. Once it starts, the stainless is compromised and exhaust gas is finding its way into the surrounding chimney cavity.
- A smoke smell in rooms that never used to smell like smoke. A failed liner leaks flue gas into the chimney stack, and from there it drifts through mortar joints and wall cavities into the house. Not a ventilation problem. A breach problem.
- Visible seams opening when you shine a light up from the firebox. Gelco liners are built in interlocking sections. When the locking bands corrode, the sections separate. You may see gaps or a slight twisting between pieces.
- The damper plate is rusted, warped, or won’t close fully. Water and condensation running down a failing liner collect at the damper. What was once a clean cast plate becomes a red-brown mess.
- Water staining on the ceiling near the chimney chase or on the hearth face. A cracked liner lets moisture out every time you burn. It shows up first as odd brown streaks in places you never saw before.
Replacement Cost & What’s Included
In Westchester County, expect an installed Gelco-compatible flue liner replacement to land between $1,400 and $2,800. The big spread comes down to three things: liner length (a two-story chimney costs more than a ranch), diameter (an 8″ liner is pricier than a 6″), and whether the existing top plate and cap can be reused or need changing. Some chimneys built before the 1980s have odd-sized flues that call for an ovalized liner, which adds a bit of labor and material. Every quote from us includes the liner, the connector, the cap, the top plate work, and the labor to install and verify the draft. We give you the number before a single tool comes off the truck, and that’s the number on the invoice. Your flue doesn’t care how the fire looks. It cares how it breathes.
DIY or Call Us?
What you can safely do: shine a flashlight up from the firebox, look for visible gaps or flaking, and snap a photo. What we don’t recommend: pulling your old liner out yourself. A stuck liner that’s corroded in place can bring old mortar and brick down with it, and you’ll be on a ladder working with both hands while a deadweight stainless tube decides where it wants to swing. That’s how shoulders get torn and tiles get cracked. The swap itself is best handled by someone who has done a hundred of them. Wendell Pike has been running liners in Westchester County fireplaces since before some of those newer Katonah subdivisions were framed. Call (914) 537-6479 and we’ll set a time that works. If it doesn’t need doing, I’ll tell you that too.
FAQs
A Gelco liner in this climate typically lasts 15 to 20 years, less if the chimney has no cap and takes on rainwater, or if the house burns a lot of green, unseasoned wood. If the liner is over that age and showing flaking or seam gaps, you’re on borrowed time. Call (914) 537-6479 and we’ll give you an honest assessment.
Occasionally, if a single section has failed and the rest of the liner is sound, we can section in a replacement piece. Once multiple sections are compromised or the locking bands have corroded, a full replacement is the honest fix. We’ll show you the camera footage before we recommend either path.
Most Gelco flue liner replacements in Westchester County are done in a single day, usually four to six hours from ladder-up to draft test. If we need to cut an ovalized liner or rebuild the top plate, it can stretch to a second visit.
We keep common 6″ and 7″ Gelco-compatible liner kits and components on the truck, along with parts from DuraFlex and HeatShield. If you need an 8″ or a custom length, we can usually have it within two to three days.
Call Top Hat Chimney for Gelco Liner Work in Westchester County
Wendell and his crew know these chimneys. We’ve been working Westchester County since 1999, and the neighbors see us around. You’ll get a set price before we start, the camera footage and a plain-English verdict, and a 90-Day Done Right Promise in writing on every job. Ask anyone on your street. Then call (914) 537-6479 for a free estimate. We answer the phone.
Written by Wendell Pike, Owner, Top Hat Chimney at Top Hat Chimney, serving Westchester County and nearby areas.