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How to prepare the substrate in a bathroom?
Updated: 15.07.2026
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Strength, evenness, waterproofing in wet zones, and systematic reinforcement are crucial.
Detailed answer
In a bathroom, divide surfaces according to their load. A dry wall has different requirements than a shower area or floor. In wet zones, waterproofing, a solid substrate, and well-resolved details are essential. The more intricate the bathroom, the more important the preparation before applying the decorative layer.
Common mistakes
- underestimating waterproofing and connection details
- poorly executed slope or drainage
- insufficient sealing of high-stress areas
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