Insulators typically do the following:

• Remove and dispose of old insulation
• Review blueprints and specifications to determine the amount and type of insulation needed
• Measure and cut insulation to fit into walls and around pipes
• Secure insulation with staples, tape, or screws
• Use air compressors to spray foam insulation
• Install plastic barriers to protect insulation from moisture

Insulators install and replace the material that saves energy and helps reduce noise in buildings and around vats, vessels, boilers, steam pipes, and water pipes. Insulators also install fire-stopping materials to prevent the spread of a fire and smoke throughout a building.

Insulators often must remove old insulation when renovating buildings. In the past, asbestos—now known to cause cancer—was used extensively to insulate walls, ceilings, pipes, and industrial equipment. Because of the health risks associated with handling asbestos, hazardous materials removal workers or specially trained insulators must remove asbestos before workers begin installing new insulation.

Insulators use common handtools, such as knives, trowels, and scissors. They also may use a variety of power tools, such as welders to secure clamps, staple guns to fasten insulation to walls, and air compressors to spray insulation.

Insulators sometimes wrap a cover of aluminum, sheet metal, or plastic over the insulation. Doing so protects the insulation from contact damage and keeps moisture out.

Floor, ceiling, and wall insulators install insulation in attics, under floors, and behind walls in homes and other buildings. To fill the space between wall studs and ceiling joists, workers either unroll, cut, fit, and staple batts of insulation or spray foam insulation.

Mechanical insulators apply insulation to equipment, pipes, or ductwork in many types of buildings.