Insulation

Brick is a rectangular building block made of clay, shale, or various other materials. Bricks are strong, hard, and resistant to fire and damage… See more » Cement and concrete are among the most important building materials. Cement is a fine gray powder. It is mixed with water and such materials as… See more » Cermet is a hard material that can withstand high temperatures. The name comes from the words ceramic and metal. Ceramic materials are hard and… See more »