This union represented skilled workers who install insulation to pipes, tanks, boilers, ducts, refrigeration equipment and other surfaces requiring thermal control of temperatures. The responsibilities of these mechanics, improvers and apprentices also include the manufacture, fabrication, assembling, molding, erection, spraying, pouring, mixing, hanging, preparation, application, adjusting, alteration, repairing, dismantling, reconditioning, corrosive control, testing and maintenance of heat or frost insulation. Workers also handle insulation materials made of fiberglass, rubber calcium silicate and urethane. Insulators also handle the removal of asbestos-containing material.
Insulators Local 74 - Des MoinesInsulators Local 81 - Cedar Rapids & Quad CitiesInsulators Local 57 - Sioux City