BATHROOM WATER PROOFING

Bathrooms are the main wet area in the house. Therefore, you need to waterproof the area so that water does not get into the substructure of the house and cause major structural damage. ... It involves setting up a waterproof barrier around the floor and walls of the bathroom, including the shower.

Applying a waterproofing sealer to cement backer board before tiling. Since a tile tub or shower surround gets wet, it requires a waterproof backing, rather than just drywall.