If you have a tile shower in your bathroom, then you will need a PVC shower pan liner to waterproof the shower area. You must install the PVC shower pan liner correctly. Follow these steps to install a PVC shower pan liner.
Step 1 - Preparation
Sweep the floor to remove dirt and debris. Cut the liner to fit the drain assembly. Make sure that there are no holes in the liner before you install it.
Step 2 - Installation
Place the PVC liner in the shower and slide the drain assembly over it. Use nails to fit the liner, and then caulk the drain assembly and nail holes. Pour concrete over the liner and use the trowel to form a slope to the drain. Allow it to dry for 48 hours before laying tiles.