Gelco Chimney Liner & Rebuild Nationwide

Gelco Chimney Liner & Rebuild in Baltimore: What to Know First

As an independent Gelco service provider, we handle chimney liner replacement and rebuild work for Baltimore homeowners with Gelco systems, from the 316Ti stainless liners common in Federal Hill rowhouses to the flexible alloy kits used in Hampden’s older flues. Most Gelco liner jobs and partial rebuilds are completed in a single visit once we’ve run our camera and confirmed the parts match your exact flue profile. We don’t quote what we haven’t seen, and we don’t recommend work you can safely postpone.

Call (410) 849-6273

This page is for you if you own a Gelco chimney liner and have been told it needs repair, replacement, or a full rebuild, or if you’re seeing performance issues and want a second opinion backed by photos you can see for yourself. Call (410) 849-6273 anytime - a live person answers, even at midnight on Sunday.

How Gelco Products Fail - and How We Fix Them

• Gelco 316Ti rigid liner sections: The seam-welded joints in these stainless tubes can work loose in Baltimore’s freeze-thaw cycles, especially where the chimney crown has cracked and water seeps behind the liner. We find this often in Canton brick stacks where the crown was never properly poured. Our fix is a full camera inspection to map the joint separation, then either re-secure with Gelco-compatible compression fittings or replace the affected section if the gap has allowed creosote to accumulate behind the liner.
• Gelco flexible alloy liners (pre-2015 production): The earlier corrugated flexible alloy had a thinner wall gauge that fatigues at the offsets common in Patterson Park area chimneys, where flues jog to avoid floor joists. You’ll notice this as poor draft or smoke spillage on startup. We replace with current-spec Gelco flexible or, if the flue geometry allows, upsize to a DuraFlex equivalent with a heavier wall - always documenting the change so your warranty chain stays clear.
• Gelco top plate and collar assemblies: The stamped-steel top plates on mid-2000s Gelco installs rust through at the fastener holes, especially on south-facing chimneys that take the brunt of Baltimore’s summer humidity followed by winter salt air off the harbor. Water tracks down between the liner and the original clay flue, spalling the brick from inside. We replace with a Gelco-compatible top plate in heavier-gauge stainless, or fabricate a custom collar if your flue termination is non-standard - common in Roland Park homes with decorative chimney pots.
• Gelco liner-to-appliance connections: The slip connectors and tee fittings on Gelco wood-burning installations loosen as the appliance thermal-cycles, particularly in homes that burn pine or softwood and run the stove hotter. This creates a creosote trap at the tee that standard sweeping won’t clear. We pull the tee, inspect the liner wall behind it for corrosion, and reinstall with high-temp sealant and mechanical lock - not just friction fit.
• Gelco chimney chase pans (manufactured home and chase installations): The original galvanized chase pans on Gelco prefab systems in Baltimore County split at the corners after fifteen to twenty years, right when the liner itself may still test sound. Homeowners get quoted full rebuilds when only the pan and surround need replacement. We camera the liner first; if it’s clean and intact, we replace the chase pan with a Gelco-spec or Copperfield stainless unit and save you the liner cost entirely.

Our Gelco Chimney Liner & Rebuild Process

1. 1
   Call and schedule. A live person answers, notes your Gelco model if you know it, and books a Level-2 camera inspection. No deposit, no pressure.
2. 2
   Camera inspection and documentation. Our tech runs a full-color camera from firebox to termination, photographing every joint, offset, and the condition of the surrounding masonry. You see the images on-site; we explain what we’re looking at in plain English.
3. 3
   Parts decision. If your Gelco liner is repairable with OEM components, we order direct. If Gelco lead times stretch past burning season, we source equivalent-grade DuraFlex or HeatShield materials and document the substitution so there’s no warranty confusion later.
4. 4
   The repair or rebuild. Background-checked, uniformed technicians complete most Gelco liner replacements and partial rebuilds in one visit. We protect your floors, work from the top down when possible, and test every joint with a mirror and light before we close up.
5. 5
   Post-job testing and report. We run a smoke test or draft gauge check, depending on the appliance type, and leave you with photos, a written verdict, and our 90-Day Done Right Promise - in writing, no arguing.
6. 6
   Cleanup and follow-up. We haul away the old liner or debris, sweep the hearth area, and check in by phone within a week to confirm everything is drawing properly.

What Gelco Chimney Liner & Rebuild Costs in Baltimore

What moves the price: flue height and accessibility, whether we can pull the old liner intact or must break it out in pieces, the condition of the surrounding brick and crown, and whether your appliance connection needs reworking. We agree on a flat price before we start - the number on the estimate is the number on the invoice. Call (410) 849-6273 for an exact quote; estimates are free.

Why Baltimore Homeowners Call Hearthstone Chimney Co. for Gelco Work

We’ve been answering the phone with a live person for over 42 years, and we’ve learned that Gelco owners in Baltimore want the same thing: someone who knows the difference between a Series 316Ti and a flexible alloy kit, who won’t swap in builder-grade parts to save a buck, and who puts the guarantee in writing.

Our 90-Day Done Right Promise means if it’s not right, we come back. No paperwork to dig up, no arguing about whose fault it was. Our techs carry Gelco, DuraFlex, and HeatShield materials on most trucks, so we’re not waiting on a parts run while your flue sits open. And because Russell Haines built this company on reading flues honestly - telling you what can wait and what can’t - you’ll get a verdict you can trust, not a sales pitch.

We also service DuraFlex and HeatShield systems, so if your Gelco liner is discontinued or the geometry calls for a different approach, we have options without sending you to another contractor.

FAQs