Rigid insulation is used to provide thermal resistance to foundations, walls, and roofs. It improves the energy efficiency of a home by keeping it hot or cold. This material improves the energy efficiency of a home by keeping cold or hot air resulting into lower energy bills. This also benefits the environment with less emission of greenhouse gas.

Rigid insulation gives the best results when it comes to higher thermal resistance. Due to the denser and thinner panels it can be installed with fewer gap or joints resulting into less air leakage. For installing on roof, the panels must be dense enough. For the exterior of foundations, the water-resistant panels are placed.