Insulation Worker

Insulation workers install and replace insulation materials in buildings and mechanical systems to reduce energy loss, control temperature, and dampen sound. The work encompasses measuring and cutting batt, blown-in, or spray foam insulation, fitting material into wall cavities, attics, and crawlspaces, wrapping pipes and ductwork with fiberglass or mineral wool jacketing, applying vapor barriers, and sealing joints and penetrations to prevent air leaks.

Mechanical insulation workers focus on industrial pipes, tanks, boilers, and equipment in refineries and power plants, working with specialized materials such as calcium silicate and removable insulation blankets that withstand extreme temperatures. Building insulation workers install fiberglass batts, blown cellulose, and spray polyurethane foam in residential and commercial construction, often using specialized rigs to spray or blow material into place.

The job requires working in attics, crawlspaces, and other confined areas with poor ventilation, often in respirators and other protective equipment. Workers must understand building science, including how moisture moves through structures, where thermal bridging occurs, and how insulation interacts with HVAC systems. The physical demands include carrying materials into tight spaces and tolerating hot, dusty working conditions. Many industrial insulators train through union apprenticeships.