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Surface preparation for microcement – how to prepare a wall surface

How to Prepare a Wall Surface?

Updated: 15.07.2026
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The wall must be flat, cohesive, and free from grease, dust, and unstable coatings.

Detailed answer

The wall should be smooth, cohesive, and free from grease, dust, and unstable coatings. Old paint that is flaking or chalking must be removed. After sanding and vacuuming, applying a quality primer is essential to prevent uneven absorption of the substrate. The primer must be applied thoroughly.

Common mistakes

  • applying to a dusty or non-cohesive substrate
  • skipping inspection for hollow spots and cracks
  • insufficient degreasing and priming
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