Insulation that is either poured or blown into ceilings, walls, or floors. Poured in loose-fill is made from cellulose, rock wool, fiberglass, and other fibers. Blown-in loose-fill is made from cellulose, rock wool, or fiberglass.

Loose material for insulating cavity walls and lofts.

Small pieces of insulation, made from fiber glass, mineral wool that is blown into a home using a machine that houses a blowing machine. Loose-fill insulation is typically installed by a professional. Loose-fill is used for general purposes and is especially effective at filling small and irregularly-shaped spaces.