Hi.....I am contemplating installing a granite tile countertop. All the DIY pages use concrete backer board, or denshield, adhered to the plywood underlay used to form the base for the replacement countertop. What would happen if one just glued the granite tiles directly to the plywood, and sealed them very well to prevent moisture from getting underneath? I can see the need for backer board in say a shower stall floor, but a countertop?
Thanks in advance for any replies.