It can also be categorized according to the type of insulation base material used in the production of four types.
1. material mineral fibers such as asbestos slag from smelting metal fiber.
2. Material natural fibers such as cotton, wool, wood pulp cellulose fiber.
3. cell materials such as natural rubber, cork, foam, poly-styrene.
4. Mineral cell materials Such as calcium silicate Purdue Light vermiculite, the foam concrete.