Chimney repair for Simpsonville's 1990s–2010s suburban homes — chase cover replacement, firebox panel repair, gas insert liner installation, and first-service assessments. Written scope before work begins.
Simpsonville's newer housing stock has a more compressed age distribution than most Greenville County communities — most homes fall into three distinct service windows with different primary repair needs.
Gas inserts added to original wood-burning fireplaces in Simpsonville homes are one of the most common sources of hidden flue damage in this age range.
The original wood-burning flue was sized for large firebox openings and high-heat wood fires — typically an 8×8 to 10×10 inch clay tile flue. The gas insert exhaust volume is much smaller and cooler.
Because the flue is oversized and the exhaust volume is low, combustion gases slow down and cool significantly on the way up. Water vapor in the gas exhaust condenses on the cool tile walls before it exits at the chimney cap.
The condensate — water mixed with combustion byproducts — is mildly acidic. It collects at horizontal mortar joints between clay tile sections inside the flue and begins attacking the joint mortar from the inside out.
Over multiple heating seasons, the acidic condensate progressively dissolves and erodes the mortar joints. This process happens entirely inside the flue — no exterior signs appear until joint failure is advanced.
Once tile mortar joints fail structurally, combustion gases — including carbon monoxide — can migrate laterally through the flue wall into adjacent framing cavities rather than exiting at the top. Camera inspection and liner installation stop this progression.
Rusted galvanized cover replaced with stainless steel or aluminum. Chase interior assessed for accumulated water damage to framing where cover failed undetected. New cover sealed at perimeter.
Structurally cracked refractory panels replaced as a matched set for the fireplace model. Surface-only hairline cracks assessed individually — through-cracks require immediate replacement regardless of depth.
Correctly sized stainless steel liner installed inside the existing flue from the insert collar to the chimney top — eliminates condensate from oversized flue venting and brings the appliance installation into compliance.
Corroded throat damper assessed — repaired where possible, replaced with a top-mount damper where throat replacement is impractical or the original model is discontinued.
Cracked mortar crown on the chase top sealed or rebuilt with refractory-compatible mortar, proper slope, and drip-edge overhang to direct water away from the chimney face.
Failed base and counter-flashing sealant replaced, and rusted flashing replaced where needed. Full step and counter-flashing installation where original flashing is beyond serviceability.