Masonry Cleaner 304 For treatment of efflorescence (mineral salt ) on terracotta, natural stone and cement based pavers and grouts. Particularly suitable for post construction cleaning of light mortar and grouting haze. Available in 1, 5 & 20 Litre containers. Directions for use Apply Cleaner 304 uniformly to dampened surface using a nylon brush or … Continue reading Masonry Cleaner 304