Tiling over lightweight wall materials can be tricky if you use the wrong process, but the EPS Cement Sandwich Wall Panel provides a perfectly stable base for all kinds of ceramic and stone tiles. First, make sure the entire surface of the EPS Cement Sandwich Wall Panel is free of dust, loose particles and residual release agent from the manufacturing process. Roll on a layer of polymer interface treatment agent evenly across the whole EPS Cement Sandwich Wall Panel surface, and wait for it to fully cure before moving to the next step. Use a flexible modified thin set adhesive specifically designed for lightweight cement boards instead of ordinary cement mortar to lay tiles on the EPS Cement Sandwich Wall Panel. Do not lay tiles larger than 800 by 800 millimeters on a standard EPS Cement Sandwich Wall Panel without adding a layer of alkali resistant fiberglass mesh for extra reinforcement. Following this process, tiles on the EPS Cement Sandwich Wall Panel will stay firmly attached for decades without hollowing or falling off.