Gelco Flue Liner Replacement Nationwide

Gelco Flue Liner Replacement: The Sandy Springs Owner’s Guide

We stock and install Gelco-compatible flue liner replacement in Sandy Springs, with typical installed pricing from $2,800 to $4,600 depending on flue height, diameter, and whether the existing liner is a direct pull or requires full chimney disassembly. Most Gelco liner jobs we book in Sandy Springs are completed in a single day once the scope is confirmed. Homeowners usually discover the problem during a routine sweep when our camera reveals cracked tiles, gaps at the mortar joints, or corrosion pinholing through the stainless - often after a home inspection flagged “further evaluation needed” on a house they bought between 2015 and 2022.

Call (470) 480-0885

Which Gelco Models This Applies To

Gelco flue liners fall into three main series you’ll encounter in Sandy Springs homes: the Gelco Pro, the Gelco UltraPro (higher-grade 316Ti stainless), and the older Gelco Standard lines discontinued in the mid-2000s but still present in ranch homes near Abernathy Road and the original 1960s builds off Roswell Road. The critical compatibility gotcha is diameter-to-diameter fit: Gelco Pro and UltraPro share the same collar and top-plate spacing, but the Standard series used a slightly narrower male end that will not seat into modern top fittings without an adapter we fabricate on-site.

To identify what you have, we look for the stamped model number on the top collar visible from the firebox, or we send the camera up to read the etching 8-12 feet up the flue. If the tag’s gone, we measure inner diameter with a flue gauge and check wall thickness: UltraPro runs .006″ thicker than Pro, which matters for warranty registration. We source Gelco OEM and certified equivalents through Haven’s buying network - Olympia Chimney and DuraFlex both manufacture Gelco-pattern liners we keep in our Sandy Springs warehouse - and we quote both options in writing before work starts so you see the exact delta.

Signs Your Gelco Flue Liner Replacement Is Failing

• White efflorescence or rust streaking on the exterior chimney brick. This means moisture is migrating through gaps in the liner, condensing in the chimney cavity, and carrying salts or iron oxide to the surface. In Sandy Springs, we see this accelerate after March cold snaps when flue gas hits below-40°F masonry.
• Bits of clay tile or stainless flakes in the firebox after burning. These are pieces of the liner structure spalling off from thermal shock or creosote-acid corrosion. Gelco tile liners in particular delaminate in 15-20 year cycles here; stainless lasts longer but pinholes at the joints first.
• Smoke smell in upstairs rooms when the fireplace is not in use. A compromised liner loses its negative draft seal. Smoke and carbon monoxide can migrate through cracked mortar joints into wall cavities, especially in split-level Sandy Springs homes where the chimney chase runs through conditioned space.
• The fire burns sluggishly even with the damper fully open. This often means the liner has partially collapsed or a section has shifted, choking the flue diameter. We measured one Gelco Pro last month on Hilderbrand Drive that had a 6″ nominal liner pinched to 3.5″ effective passage by a slipped joint.
• Your home inspector or insurance underwriter flagged the chimney. This is increasingly common for Sandy Springs resale transactions. The camera doesn’t guess. Neither do we - we pull the footage, show you the gap or corrosion pattern, and write the scope in plain English before quoting.

Before

After

Replacement Cost & What’s Included

What drives the range: flue height (every 5 feet adds material and labor), whether we can pull the old liner intact or must break it out in sections, and the condition of the top plate and crown that the liner terminates into. Every quote includes the NFPA 211 Level 2 camera inspection, the documented photo record under Haven Standard Clause 4, and the 365-Day Done Right Promise. We do not start work until you have a written price, written scope, and written warranty - Clause 1 of the Haven Standard.

DIY or Call Us?

There is no safe DIY path for flue liner replacement. The work involves working at height on a pitched roof, handling 20-40 foot lengths of stainless steel in a confined flue, and ensuring a gas-tight seal at the appliance connector - a leak here vents carbon monoxide into your home. What you can safely check: shine a flashlight up the firebox and look for visible gaps, cracks, or daylight where the liner meets the smoke chamber. If you see any of these, stop and call us.

We carry Gelco-pattern liners, top plates, and flex adapters on our Sandy Springs trucks, and we can often scope and quote same-week. Corrine Halstead assigns a named technician to every job, and you’ll get a text when they’re en route. Call (470) 480-0885 for a free estimate.

FAQs