what is the best way to cut backer board
Score-and-Snap. The simplest way to cut cement backer board is to score the surface and snap the sheet along the scored line, similar to the way you'd cut drywall. In fact, you can use a drywall utility knife to score backer board, but a better option is a carbide-tipped scoring tool.ere's how to use the scoring tool: Lay the backer board on a flat surface and mark the cut line with a carpenter's pencil. (A regular pencil will become too dull from drawing lines on such a hard surface.) Set a straightedge, such as a 4-foot level or perfectly straight board, on the cut line.