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Installing ultra-thin shower drains in renovation settings demands precision to protect waterproofing layers and ensure proper drainage, especially given the tight floor height restrictions common in European buildings.

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Key installation steps include careful site preparation, waterproofing integration, height adjustment, and slope creation, all of which impact drain longevity and performance.

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Below is a detailed, stepwise guide to help installers achieve successful ultra-thin drain installation in renovation projects.

Step 1: Prepare the Subfloor and Mark Drain Position

Ensure the subfloor is clean and level. Mark the drain location precisely according to the tile layout.

Step 2: Apply Waterproofing Membranes

Extend waterproofing at least 50mm beyond the drain flange and seal edges thoroughly.

Step 3: Install Drain Channel and Secure Grate

Position the drain flush with the finished floor, adjusting brackets if available to maintain level installation.

Step 4: Verify Floor Slope

Maintain a slope of 1–2% away from the drain to prevent pooling.

Step 5: Common Mistakes to Avoid

Avoid gaps in waterproofing, improper slope, and unstable grates that cause standing water.

Conclusion

Proper adherence to installation protocols ensures ultra-thin drains perform reliably and meet warranty requirements.