<p>Various materials and products are used in waterproofing a bathroom. These include waterproofing membranes, sealants, coatings, primers, and waterproofing additives. Waterproofing membranes are applied to surfaces to create a protective barrier against water penetration. Sealants are used to seal joints, corners, and fixtures to prevent water leakage. Coatings and primers provide an additional layer of protection while waterproofing additives enhance the waterproofing properties of paints and coatings.</p>