As an insulation installer, you place insulation in a building to assist with climate control. Your duties include installing insulative materials above the ceiling, below the floor, and in between the wall and the building’s exterior. Your responsibilities as an insulation installer may also include insulating pipes and ductwork. Entry-level workers who use mechanical equipment for insulation installation learn job skills during an apprenticeship. In an entry-level position, you work under the direction of a journey-level insulation installer before earning certification from the National Insulation Association. The qualifications that you need to start an apprenticeship include a high school diploma.