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 Leesburg: What to Know First
Gelco chimney liner and rebuild work in Leesburg runs anywhere from $1,850 for a straightforward flexible liner replacement up to $9,500+ for a full rebuild with custom masonry, and most jobs wrap within three to five business days once the old liner is pulled. We’re an independent Gelco service provider, not an authorized dealer, which means we choose parts based on what the flue actually shows us on camera, not what a manufacturer program tells us to stock. This page is for homeowners in Leesburg whose Gelco liner has failed, is nearing the end of its service life, or was flagged during a Level 2 inspection. If you already know the liner’s shot and want a written price, call (571) 601-3174.

How Gelco Products Fail - and How We Fix Them
- Gelco Flex King Pro liner seam separation near the tee body. We see this most on installations from the late 2000s where the liner was pulled through an offset flue with too short a radius. The stainless corrugation separates at the tee connection, not along the liner body. The fix is a full liner repull with a properly sized tee and a torque check on the clamp band, not a patch.
- Gelco Insul-Lock wrap breaking down inside the smoke chamber. On older Leesburg homes with unparged smoke chambers, moisture from the original masonry wicks into the insulating wrap and it sags, leaving cold spots that accelerate creosote buildup. We pull the liner, parge the chamber, and repull with a fresh insulation kit rather than layering new wrap over failed wrap.
- Gelco oval-to-round transition flue collapse. This happens when an installer forced an ovalized liner through a narrow flue without a proper transition boot. The liner crushes at the offset and chokes draft by half. We remove the entire run, measure the true flue ID on camera, and either install the correct rigid section or step up to a DuraFlex ovalized system if the flue dimensions demand it.
- Crown wash leak migrating into the Gelco porcelain liner system. Gelco’s porcelain-coated liners resist acidic condensation better than raw stainless, but they can’t overcome a cracked crown dumping water down the flue opening. We rebuild the crown with a proper bond break and overhang before reinstalling any liner, otherwise the new liner sits in a wet flue and fails early.
- Gelco 7″ liner incorrectly downsized to fit a 6″ opening at the damper frame. This creates turbulence at the appliance connection and backdraft into the home. We remove the old damper frame entirely, not cut around it, and run the liner at full diameter to the appliance outlet with a proper top plate. If the opening can’t accommodate the correct diameter, we tell you before touching it and put the options in writing.
Our Gelco Chimney Liner & Rebuild Process

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Call and get a live person. You’ll speak to someone at (571) 601-3174 who can schedule the inspection, not a voicemail tree.
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Camera scan before anyone quotes a dollar. Clause 4 of the Haven Standard requires a documented photo record on every job. We run the camera down the flue, see the actual Gelco liner condition, and show you the footage on the spot.
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Written scope, written price, written warranty. Before any work starts, you get all three. No verbal estimate, no “we’ll figure it out as we go.”
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Parts decision: OEM or quality aftermarket, based on the flue. For a Gelco liner that’s simply aged out, a direct Gelco replacement often makes sense. When the flue itself is undersized or the installation was wrong from the start, we’ll spec DuraFlex or HeatShield where it’s the better fit and explain why in plain terms.
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The repair or rebuild itself. Liner pulls, partial rebuilds, full rebuilds, and masonry work all happen with the same crew that diagnosed the problem. We don’t sub out the hard parts.
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Final camera pass and photo record. You walk away with before-and-after footage, a written warranty, and a documented record of the flue in its finished state. The 365-Day Done Right Promise applies: if it’s not done right, we make it right.
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AfterWhat Gelco Chimney Liner & Rebuild Costs in Leesburg
Here’s what we quote in Leesburg, in writing, before any work starts:
- Gelco Flex King Pro flexible liner replacement, 25-30 ft run: $1,850-$2,600 installed, including tee, top plate, rain cap, and insulation wrap where specified.
- Liner replacement plus smoke chamber parging: add $600-$1,200 depending on chamber size and condition.
- Partial rebuild (crown, top 10-15 courses of brick, new wash): $3,200-$5,500 depending on scaffolding access and masonry matching.
- Full chimney rebuild from the roofline up: $7,500-$9,500+ for a standard single-flue chimney with new liner, crown, and flashing.
What moves the price: flue height and access, whether the smoke chamber needs parging, whether the crown is shot, and whether we’re matching historic brick on older Leesburg homes. If you have a competitor’s written estimate, bring it in. We’ll do a free second opinion and show you exactly where the numbers differ. Call (571) 601-3174 and we’ll get you a written price after the camera scan.
Why Leesburg Homeowners Call Level Two Chimney Leesburg for Gelco Work

We’ve inspected and cleaned over 38,000 chimneys since 2009, and every one of them got a written price before work started and a documented record when it was done. That’s not a sales line; it’s the way Corrine Halstead runs the company. Our techs have pulled more failed Gelco liners out of Leesburg flues than anyone wants to admit exists, and they know the difference between a liner that failed because of age and a liner that failed because someone forced it into a flue it never fit. We carry DuraFlex and HeatShield as backup options when a Gelco liner isn’t the right call, and we’ll tell you which one is and why. When you call, a live person answers, 24/7. When your tech is on the way, you get a text with their name and license information. We don’t do voicemail-only scheduling and we don’t do flashlight inspections.
FAQs
No, we’re an independent Gelco service provider. That’s actually an advantage for you: we’re not bound by manufacturer program quotas or parts pushes. We spec the liner and rebuild materials based on what your flue needs, whether that’s Gelco, DuraFlex, HeatShield, or a combination. Your written estimate spells out exactly what’s going in and why.
It depends on what the camera finds. Small tears near the top can sometimes be sleeved with a rigid section, but most Gelco liner failures we see in Leesburg are seam separations, crush points, or insulation breakdown, and those mean replacement. We won’t sell you a full repull if a repair is honest; we also won’t patch something that’s going to separate again in two seasons. The camera footage is what we base the call on.
Most liner replacements are done in one day. Partial rebuilds run two to three days. A full rebuild from the roofline up is usually five business days, weather permitting. We give you the schedule in writing before work starts, and we text you when the crew is on the way.
If we’re using non-Gelco components like a DuraFlex liner or HeatShield from our network, the warranty on those parts comes from their manufacturers, not Gelco. Our 365-Day Done Right Promise applies to our workmanship regardless of whose parts go in. If it’s not done right, we make it right, full stop.
Every year, same as any liner. Leesburg’s freeze-thaw cycles are hard on crowns and flashing, and water intrusion is the quickest way to shorten any liner’s life. We inspect with a camera every time, not a flashlight, so you get a photo record of the liner’s condition year over year. Call (571) 601-3174 to schedule.
Written by Corrine Halstead, Owner, Level Two Chimney Leesburg at Level Two Chimney Leesburg, serving Leesburg and nearby areas.





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