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
Insulated buildings save energy by keeping heat in during the winter and out in the summer. Insulated vats, vessels, boilers, steam pipes, and water pipes prevent the loss of heat or cold and prevent burns. In addition, insulation helps reduce noise that passes through walls and ceilings.
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 this danger, hazardous materials removal workers or specially trained insulators are required to remove asbestos before workers can begin installation.
Insulators use common hand tools, such as knives and scissors. They also may use a variety of power tools, such as power saws to cut insulating materials, 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 vapor barrier (plastic sheeting) 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. Most of these workers unroll, cut, fit, and staple batts of fiberglass insulation between wall studs and ceiling joists. Alternatively, some workers spray foam insulation with a compressor hose into the space being filled.
Mechanical insulators apply insulation to equipment, pipes, or duct-work in businesses, factories, and many other types of buildings. When insulating a steam pipe, for example, they consider the diameter, thickness, and temperature of the pipe in determining the type of insulation to be used.