RLA Universal Primer
Universal Primer is a rapid drying solvent-free low VOC water-based acrylic primer. For use over porous and non-porous substrates such as ceramic tiles, painted surfaces (waterbased only), and sealed or burnished concrete floors. For extremely non-porous, hard, and tight substrates it is recommended that a light grind or sand be conducted to enhance adhesion.
Universal primer is compatible with cement-based ceramic tile adhesives and leveling compounds.