An insulating material that looks like wool but is composed of such substances as granite or silica.
An insulating material similar to fiberglass which can be blown into wall cavities. It has a high melting point.
A type of insulation, vaguely resembling wool, that is blown into the space to be insulated. The material is commonly used to insulate attics.
A type of insulation made from virgin basalt, an igneous rock, and spun into loose fill or a batt. It is fire resistant and helps with soundproofing.