Description
Install and repair refractory linings by laying firebrick and block and placing castables, plastics, and ceramic fiber to line furnaces, kilns, boilers, and other thermal-process equipment; mix and apply materials, align and finish joints, and perform demolition, cleanup, curing, and dry-out to return units to service.
- • Read blueprints, isometrics, and specs to determine lining design, materials, and thickness.
- • Measure and mark layout with levels, plumb bobs, and lasers.
- • Build corners, arches, and rings; align courses and maintain bond and expansion joints.
- • Cut and shape firebrick and block with saws, hammers, or grinders.
- • Mix refractory castables, mortars, and plastics to specified ratios.
- • Lay firebrick and tile with high-temperature mortars in furnaces, kilns, and boilers.
- • Install anchors, studs, and hexmesh for castable and fiber systems.
- • Set forms and place, vibrate, and finish castable linings; strip forms after cure.
- • Ram plastic refractory and gun/shotcrete or spray refractory to required density and thickness.
- • Remove burned or damaged refractory; clean shells and surfaces of slag, dust, and scale.
- • Check alignment, thickness, and joint quality; correct defects.
- • Apply ceramic fiber blankets/modules, coatings, and washes.
- • Perform controlled curing and dry-out/heat-up per procedures; record temperatures.
- • Follow confined space, hot work, and LOTO safety practices; maintain tools and housekeeping.
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This site includes information from O*NET by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA), used under the CC BY 4.0 license. Career Clutch has modified some of this information for student readability. USDOL/ETA has not approved, endorsed, or tested these modifications. O*NET® is a trademark of USDOL/ETA.
Last reviewed: Jan 2026
