BAL Prime APD Primer is used in the preparation of wall and floor backgrounds prior to the application of any levelling compounds and the BAL WP1 Waterproof tanking Kit
BAL Prime APD Primer is a modified acrylic polymer dispersion which isolates products contain calcium sulphate. Gypsum plaster, anhydrite screeds, and cement-based adhesives may contain calcium sulphate.
The BAL Prime APD Primer minimises the risk of reaction between the two materials and provides surface strength to friable surfaces. It reduces porosity – preventing air bubbles and prolonging the flow time of levelling compounds and extending the open time of tile adhesives.