Michigan Builders License Practice Exam

Blown-in insulation is commonly referred to as loose-fill insulation. This term is used because the insulation material is essentially loose particles or fibers that can be easily blown into wall cavities, attics, or other spaces to create an insulating barrier. The installation process involves using a machine that blows the insulation material into the desired area, allowing it to conform to the space and effectively reduce heat transfer.

Other terms listed, such as spray-foam, fiberglass, and mineral wool, refer to different types of insulation materials or installation methods. Spray-foam insulation is applied in a liquid form that expands to fill gaps and create an airtight seal, while fiberglass refers specifically to insulation made from glass fibers, which can be in batts or rolls rather than a loose form. Mineral wool, also known as rock wool, is another type of insulation made from natural or synthetic minerals, typically used for its fire-resistant properties. However, these terms do not describe the loose, blown-in nature of the insulation that coincides with the term "loose-fill."