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 Passaic Owner’s Guide
We stock and install Gelco-compatible flue liners throughout Passaic, and most replacements run between $1,400 and $2,800 installed, depending on the liner diameter and how much of the existing clay tile or old liner has to come out first. Wendell keeps the common 6-inch and 8-inch Gelco liner sizes on the truck, so he can usually confirm the repair the same visit and have it scheduled within days, not weeks. Most Passaic homeowners discover they need a Gelco flue liner replacement one of three ways: a cracked clay tile shows up during a sweep, the water heater starts venting oddly (that’s the smaller 4-inch Gelco that usually fails first), or a chimney fire left the old liner brittle enough to break apart by hand.
The liner is the part of your chimney that actually moves hot gases and carbon monoxide out of your house. The brick around it is just a weather jacket. When the Gelco liner fails, the brick starts absorbing heat and corrosive condensation it was never built to handle. That’s the real problem.
Which Gelco Models This Applies To
Gelco has made liners for a long time, and Passaic houses have a mix of every generation. The older Gelco clay tile liners, the ones you find in homes built between about 1950 and 1980, are simple unlined clay sections stacked inside the chimney chase. Those were never sealed, and over 50 or 60 New Jersey winters they crumble at the joints first. The newer Gelco stainless steel liners, usually marked with a tag near the top plate or a label at the furnace connection, come in 4-inch for water heaters, 5.5-inch, 6-inch, 7-inch, and 8-inch for stoves and furnaces. The smooth-wall 316L alloy is the workhorse; the 304 alloy was more common before the mid-1990s and does not hold up as well against the acids in condensing gas exhaust.
The compatibility gotcha we see often in Passaic: a homeowner will have a 6-inch opening in the face of the fireplace and assume that’s the liner size. But the actual flue above the damper often necks down to a different measurement. We measure at the top, at the throat, and at the appliance outlet. Three measurements, not one. If the old liner tag is still legible, write down the model number before you call us. It saves a trip up the ladder. Gelco, by the way, is its own brand, and we’re an independent shop that installs Gelco liners alongside DuraFlex and HeatShield systems. If Gelco is what’s already in the chimney, matching the diameter and alloy matters more than the sticker on the side of the box.
Signs Your Gelco Flue Liner Replacement Is Failing
- Drafting problems that show up as smoke in the living room. The liner develops holes or gaps, and the appliance can no longer pull a steady draft. The smoke finds the path of least resistance, which is back into your house.
- White, chalky staining on the brick or a rust-colored drip line near the chimney cap. That’s creosote or acidic condensate working through cracks in the liner and into the masonry. By the time it shows outside, the liner’s been compromised for a while.
- A sudden jump in heating bills with no other explanation. A cracked liner lets heat escape up the chimney instead of staying in the house, and a gas furnace starts short-cycling because the draft is weak.
- Sounds of falling grit or the smell of damp masonry after heavy Passaic rain. We get nor’easter-driven rain in Passaic, and water makes the freeze-thaw problem worse. Liner fragments and spalling clay tile settle in the cleanout and make a crunching noise when you open the bottom door.
- You see paper-thin flakes or a brittle, shattered clay tile during a sweep. This is the most common discovery. Wendell’s camera finds the broken clay tile liner and we show you the footage before recommending anything. You see exactly what he sees.
Replacement Cost & What’s Included
In Passaic, a Gelco flue liner replacement typically runs $1,400 to $2,800 installed. Here’s the honest breakdown of what moves that number:
- Liner diameter and alloy type: A 4-inch water heater liner is the least expensive. An 8-inch stainless liner for a large wood stove is more. 316L costs more than 304 and lasts longer with gas appliances.
- Chimney height: A two-story rowhouse on Gregory Avenue needs a longer liner than a one-level house. The liner is priced by the foot, and insulation wrap adds to that.
- Access: Some Passaic rowhouses have chimneys that are only reachable with a tall ladder and a second set of hands. Some have flat roof access. The difference in time shows up in the labor line.
- What has to come out first: If the existing clay tile or old Gelco liner has to be broken out and removed, that adds labor. Some old liners pull out cleanly; most don’t.
Every quote from Top Hat Chimney includes the old liner removal, the new Gelco liner, the top plate, the rain cap, and the connection at the appliance. That’s the exact number you approve before any work starts, and we back it with our 90-Day Done Right Promise in writing. If something isn’t right, one call brings Wendell back.
DIY or Call Us?
You can safely do the inspection part yourself. Open the cleanout door at the bottom of the chimney and look for fallen tile fragments. Shine a flashlight up the flue from the bottom and look for obvious daylight holes or separations between sections. What you should not do is try to replace a Gelco flue liner yourself. This is not a bolt-on part. It means working at height, handling a stainless steel liner that expands and coils, and making the connection at the appliance outlet correctly. If that connection leaks, carbon monoxide goes into your house instead of out the chimney. That’s the part that keeps us up at night about shortcuts. The splice points and the termination cap have to be done right, and Passaic’s older masonry tolerates very little slop.
If you’ve got the flashlight and the cleanout door, take a look. Then call (551) 368-8859 and tell us what you found. Wendell will come out, put the camera up, and show you the footage before anyone recommends a dollar amount. If it doesn’t need doing, he’ll tell you so.
FAQs
A Gelco stainless liner, installed correctly and sized properly, will typically last 20 to 30 years in Passaic before the freeze-thaw cycles and acidic exhaust take their toll. The older clay tile Gelco liners from the 1970s and 1980s are well past that window now, and most of the ones we replace are that generation. Call (551) 368-8859 and we’ll take a camera look at yours.
Sometimes. If the damage is a single failed joint or a small section of rust near the top, a sectional splice can be done without pulling the whole liner. But when the liner is brittle, rusted through in multiple spots, or the original installation was the wrong diameter from the start, patching just postpones the full replacement and often costs more over two years than doing it once. We’ll show you the camera footage and tell you which situation you’re in.
Most Passaic jobs are done in a single day. Wendell and his crew arrive with the liner sections, break out the old liner if needed, run the new one down, make the top and appliance connections, and seal everything. The only jobs that run longer are the ones where major masonry repair around the crown is discovered once the top plate comes off, and we’ll tell you that before we touch it.
We keep the common sizes on hand: 4-inch, 6-inch, and 8-inch Gelco stainless liners are usually in the truck. Odd sizes or long lengths may need a day or two to pull from our supplier, but we can almost always have your Passaic job scheduled within the week. Call (551) 368-8859 with your measurements and we’ll tell you exactly what’s available today.
Written by Wendell Pike, Owner, Top Hat Chimney - Passaic, NJ at Top Hat Chimney, serving Passaic and nearby areas.