TRUBUILD TILE ADHESIVE TA 660 Grey is a single-component, ready-to-use, polymer modified, cement-based, flexible grey tile adhesive for fixing ceramic, clay, terracotta, brick, query tiles, vitrified/fully vitrified tiles, glass mosaic tiles, terrazzo, basalt, porcelain tiles & other stones on floors/walls in interiors, and exterior walls for more than 10 ft height in dry and wet areas. It should be applied on a fully cured and sound cementitious substrate.