How To Cut Wonderboard Backer Board. *i would never, ever cut tile backer with a saw or grinder. 1 subfloor and countertop base should be an exterior grade plywood with a minimum thickness of 3/4when using 1/4 wonderboard lite.
A sharp utility knife will cut a room of backer much faster than a carbide scoring knife.a common rookie mistake is to believe that it should fit tight. After flaying it, finish the seams with mortar and tape.
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After several taps, the backer board will fracture along the holes and the circle of backer board will break free. Also asked, how do you cut a fiberock board?