National PVA Primer White for Masonry is an acrylic copolymer based primer with moderate opacity and sealing property. It has excellent adhesion and good alkali resistance on cementitious surfaces. It is a general – purpose primer for masonry works. It is suitable for interior/exterior applications. It contains anti fungal and anti bacterial additives. RECOMMENDED USES National PVA Primer White for Masonry is a general – purpose primer for cementitious surface. It can be used as a primer to hide the substrate surface and provide an opaque matt finish. It is used for interior/exterior applications on concrete, plaster, bricks, asbestos, gypsum etc. as a masonry primer. It can be used for sealing the chalky surfaces like gypsum board and putty.