What is the purpose of Foil-backed Insulation?

Foil-backed insulation primarily serves the purpose of reflecting heat. The foil layer acts as a radiant barrier, which means it reflects radiant heat away from the living space in hot conditions and can help keep spaces cooler. In colder climates, it can reflect heat back into the living area, thereby improving energy efficiency by minimizing heat loss. The reflective quality of the foil allows this type of insulation to be particularly effective in managing temperature control in a building, making it a popular choice for energy-efficient construction and renovation projects.

While sound absorption, heat retention, and moisture intrusion prevention are important aspects of building insulation, they are not the primary function of foil-backed insulation. This kind of insulation overlaps with other materials that are specifically designed for those purposes.