Polyurethane Primer (PU Primer)
Polyurethane Primer is a single-component installation product used to prepare concrete and comparable absorbent mineral substrates identified in its technical data for polyurethane-based flooring systems. It helps regulate porosity, control surface dusting and support adhesion of the following layer. The substrate must be sound, clean and dry; moisture, dew point, absorbency, coverage, overcoating interval and any sand broadcasting must be verified against current product data and project conditions.