Waterproofing a shower starts with the substrate, which must be stable and properly sloped (typically 1/4 inch per foot) toward the drain. Design considerations include the use of modern waterproofing membranes (like liquid-applied systems or sheet-bonded membranes) that provide a continuous barrier around corners, penetrations, and joints. Tile selection must consider slip resistance and moisture absorption, while grout joints should be planned to minimize exposure to standing water. Proper ventilation is also a design requirement to manage humidity levels. Integrating these technical elements ensures a long-lasting, leak-free shower system that protects the home's framing and finishes.

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