Definitions for "Backer Board"
See cement board.
Cement-based sheet material used as a substrate for tile on walls, floors, and counters. The material of choice in any wet area such as a kitchen or bathroom because it is unaffected by water. Also called cement board, wonder board, or green board.
Cement-based panel with a fiberglass-reinforced coating; used as underlayment for tile. Also called cementitious backer units, or CBUs.