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 Woodland Park: What to Know First
Gelco chimney liner and rebuild work in Woodland Park usually runs between $1,850 and $4,200 depending on whether we’re replacing a liner section or rebuilding the top half of the flue. We’re an independent Gelco service provider, and we install or rebuild with either Gelco parts or quality aftermarket equivalents like DuraFlex, whichever serves your flue better. Most Gelco liner jobs take one day; a full rebuild can run three to five. If you own a Gelco liner in Woodland Park and it’s showing signs of wear, call (973) 846-1622. Wendell will come out, run a camera down the flue, and tell you plainly whether the work needs doing right now or can wait a season.

This page is for homeowners in Woodland Park who already have a Gelco liner or are considering one and need honest answers about rebuilds, repairs, and cost. No sales script. Just what we’ve seen in flues across Passaic County.
How Gelco Products Fail - and How We Fix Them
Gelco made solid liners for years, and plenty of them are still doing their job in Woodland Park chimneys. But like every brand, they have patterns. Here’s what we actually see:
- Gelco 316 stainless flex liners develop pinholes at the corrugation creases near the smoke shelf. This happens because Woodland Park’s wet, cold winters push acidic condensate down the liner, and 316 alloy, while decent, isn’t as resistant as 316Ti or 904. Symptom: you smell a sharp, almost metallic odor near the fireplace even when it’s cold. Fix: we replace the damaged section or run a new 316Ti liner, and we re-insulate so condensation doesn’t repeat.
- Gelco’s standard aluminum liners (often paired with older gas inserts) sag and separate at the seams. Aluminum handles gas exhaust fine but not heat spikes or moisture well. If you had a gas unit converted or oversized, that liner may be kinked behind the damper. Symptom: lazy flame on your logs or soot on the glass that wasn’t there before. Fix: replace with stainless, every time.
- Gelco’s uninsulated liners in exterior chimneys in Woodland Park are prone to rapid creosote buildup. An exterior chimney on the north side of your house never gets warm, so the liner stays cold, and creosote loves a cold surface. We see this on the older Cape Cods and ranches around Rifle Camp Park. Fix: we insulate the liner when we rebuild, which keeps the flue gas warm and speeds up draft.
- Gelco’s tee and cap assemblies rust at the weld points before the liner fails. The cap usually fails first. Symptom: rust streaks down the crown or a cap that looks like it’s dissolving from the top. Fix: replace the assembly with a higher-grade stainless cap and evaluate whether the liner underneath still has years left.
- Gelco liners that were installed without a proper crown repair let water in behind the liner and rot the chimney from the inside. The liner company didn’t fail; the install did. We pull the old liner, repair the crown and flashing, and rebuild the flue so the system works as one unit, not a patch job. The camera shows us exactly where the water got in.
Our Gelco Chimney Liner & Rebuild Process
Here’s how a Gelco job goes with us, start to finish:
- 1
We show up and run a camera down the flue before we touch anything. You watch the footage. If we see something worth fixing, you’ll see it too. If it doesn’t need work, Wendell will tell you that first.
- 2
We check what kind of Gelco liner you have and what the original install looks like. Some Gelco installs from the 2000s skipped insulation or used undersized liners. That changes the whole approach.
- 3
We give you a written price before a single tool comes off the truck. The number on the paper is the number on the invoice. No “we found another problem” phone call mid-job.
- 4
We pull the old liner or damaged section and prep the throat and crown. If the crown is cracked, we fix it now. A new liner in a broken crown is just a future rebuild.
- 5
We install the new Gelco liner or a quality aftermarket equivalent, insulated where the chimney demands it, and test the draft. You get a before-and-after camera walkthrough.
- 6
We clean up and leave your fireplace ready to light. Every job carries our 90-Day Done Right Promise in writing.
What Gelco Chimney Liner & Rebuild Costs in Woodland Park
Prices vary by height, access, and what the camera shows. But here are the honest ranges we quote in Woodland Park:
- Gelco liner section repair: $450-$950
- Full Gelco flex liner replacement (single story, straight flue): $1,850-$2,600
- Two-story home with exterior chimney and insulation upgrade: $2,800-$3,900
- Partial chimney rebuild (top 15-20 courses): $3,200-$5,500
- Full chimney rebuild from the roofline up: $6,000-$12,000 depending on height and brick matching
What moves the price: chimney height, whether we need a lift, whether the crown needs rebuilding at the same time, and whether your existing liner was insulated. We don’t charge a trip fee inside the county, and every quote is free. Call (973) 846-1622 and we’ll schedule a look.
Why Woodland Park Homeowners Call Top Hat Chimney for Gelco Work
We’ve been driving through Woodland Park since before the name changed, and Wendell Pike has been inside enough of your chimneys to know the ones near Rifle Camp Park by sight. We’re locally owned and owner-operated, not a franchise that rotated in from out of state. Our techs wear uniforms, show up in a real window, and call if they’re running late. We know Gelco, but we also work with DuraFlex and HeatShield each week, which means we’re not loyal to one manufacturer’s catalog. We’re loyal to your flue. And if it doesn’t need doing, we’ll tell you that first. Then we’ll shake your hand and leave without selling you a single thing.
Every Gelco liner or rebuild we do is covered by our 90-Day Done Right Promise. If it’s not right, one call brings us back. No charge. No argument.
FAQs
It depends on what the camera shows, but yes, we often repair Gelco liners by replacing a damaged section if the rest of the flue is sound. That usually costs between $450 and $950. If the liner is more than 15 years old or shows pinholes in multiple spots, replacement is the smarter call. We’ll show you the footage and let you decide. Call (973) 846-1622 for a free estimate.
No. We’re an independent Gelco service provider, but warranty language from Gelco and most liner manufacturers holds regardless of which qualified contractor installs or services the liner. We handle warranty documentation for you when we’re doing the work. Call us and we’ll explain what your specific warranty covers.
A standard single-story Gelco liner replacement takes one day. A two-story home or one with a rebuild of the crown can run two to three days. A full rebuild can take up to a week depending on weather and masonry work. We’ll give you a real schedule when we quote the job, and we call if anything slips.
Once a year, burn or no burn. Chimneys break in the off-season too, and Gelco liners can develop pinholes from condensation even when the fireplace is dark. A yearly camera inspection in Woodland Park catches the small stuff before it becomes a rebuild. We recommend scheduling in late summer, before burning season fill our calendar.
Yes. We install and service DuraFlex and HeatShield liners too, and we service Olympia Chimney, Famco, and Copperfield components. If you have a mixed system, we’ll tell you what’s working and what isn’t, and we’ll replace with the right material for your fuel type and chimney exposure. Call (973) 846-1622 and we’ll set up a look.
Written by Wendell Pike, Owner, Top Hat Chimney at Top Hat Chimney, serving Woodland Park and nearby areas.





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