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Do I have to sand every layer of Aqua Base?
Updated: 15.07.2026
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It is recommended at least to smooth out irregularities and sharp transitions between layers.
Detailed answer
Aqua Base is not sanded to achieve a perfect shine, but to remove edges, points, and trowel marks. Usually, grit sizes P40–P80 are used depending on the irregularities. Diamond pads work well because they level the surface more cleanly. After sanding, thorough dust vacuuming must follow.
Common mistakes
- applying a thick layer instead of a thin grain-sized coverage
- sanding without thorough dust vacuuming
- rushing between layers and not allowing proper drying time
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