Bathrooms are high moisture areas that demand extra attention to wall waterproofing, and the EPS Cement Sandwich Wall Panel can work perfectly here if you follow the right professional procedures. First, select a special moisture resistant grade EPS Cement Sandwich Wall Panel that has a softening coefficient above 0.85, instead of using standard panels designed for dry indoor spaces. Seal all the joints between each EPS Cement Sandwich Wall Panel with cement based waterproof sealant before you apply any full surface waterproof coating. Extend the waterproof membrane from the bathroom floor up to at least 300 millimeters high on the surface of the EPS Cement Sandwich Wall Panel, and cover the entire wall area inside the shower zone up to 1.8 meters. Never drill through the full thickness of the EPS Cement Sandwich Wall Panel in the wet shower area, to avoid creating hidden water leakage paths that can spread moisture to adjacent rooms. With these simple steps, your bathroom wall system built with EPS Cement Sandwich Wall Panel will stay completely free of mold and moisture damage for decades.