What is blown-in insulation and how does it compare to other types of insulation?

Blown-in insulation is a type of insulation made of loose fibers or particles that are blown into a space to fill gaps and provide thermal resistance. It is typically made of materials like fiberglass, cellulose, or mineral wool. Compared to other types of insulation like batts or rolls, blown-in insulation can be more effective at filling small or irregularly shaped spaces, providing better coverage and potentially higher energy efficiency.