An insulator is a skilled worker who specializes in installing and maintaining insulation materials in buildings and other structures. Insulators help regulate temperature, conserve energy, and reduce noise by installing materials such as fiberglass, foam, and cellulose in walls, ceilings, and floors. They must be familiar with building codes and safety regulations to ensure that insulation is installed correctly and effectively. Insulators play a crucial role in improving the energy efficiency and comfort of buildings.