How-To Project Home Maintenance Dictionary FAQ Help Find a Pro Librarian Cutting Cement Board Cement board is the choice of professionals for tile installation. It is tough and withstands repeated exposure to water. It is constructed from cement with a nylon mesh on either side. Measure the opening that you have have to fill. Using a square, transfer these measurements to the cement board.
Cement board seems fairly tough but is actually fairly easy to cut with a utility knife.
Score the cement board with a razor knife until you cut the mesh. Fold the snapped side over and, using you razor knife, cut the mesh on the other side. If you need to trim areas, you can simply run the knife along the edge. Hold the knife so that the blade bites slightly into the edge. This can be a tedious process so try to get it right the first time.