Let's assume we've selected a flooring system that meets our needs and are about to apply it. Typically, with most systems, the first step is applying a primer. This is a crucial step that directly impacts the final appearance and functionality of the floor coating. If, after priming a concrete floor, we find dull "patches" the next day, it means the priming needs to be repeated, as the substrate is very absorbent. Below are photos of particleboard, which is very absorbent, so this was certain to occur.

 

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Incorrectly primed surface, we see dull spots.

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Properly primed surface with uniform gloss.

Consequences of improper priming of a concrete floor:

  • higher consumption of topcoat
  • uneven coverage
  • uneven gloss/matte effect
  • In the case of epoxy screeds, this may result in more bubbles appearing and the coating being uneven

That's why we always say that proper preparation of the substrate is half the success!