Project manager Dan has kept the build moving along, and inspections for electrical and gas piping are complete. In this episode, Wade covers six types of commonly used insulation in residential construction and details the two primary insulation materials used on the project. While the majority of the home is insulated with mineral wool from Rockwool, Wade prefers the use of closed cell spray foam in select locations. With the insulation wrapping up, the wallboard installation is rapidly approaching.