Glasswool

1 clue
Insulation material
Similar answers:
Agateglass
Aglass
Artglass
Atlonglast
Autoglass
Blownglassart
Brokenglass
Bulletproofglass
Busterdouglas
Carnivalglass
Carterglass
Cheapsunglasses
Chipdouglas
Clinkglasses
Cocktailglasses
Copierglass
Cordialglass
Corkdouglas
Cutglass
Darkglasses