Modern shower systems rely on several integrated layers. The base requires a sloped mortar bed or a pre-sloped pan to direct water to the drain. The walls must be covered with moisture-resistant backers (like cement board) followed by a waterproofing membrane, such as sheet membranes or liquid-applied coatings. Sealing joints and corners with waterproof tape is critical. Finally, ensuring the drain assembly is properly integrated with the membrane prevents leaks, providing a durable defense against long-term moisture damage.

Ask an Expert