Kerakoll Bioflex S1 is a deformable mineral adhesive with an extremely high natural additive content for high performance bonding of porcelain tiles, ceramic tiles and natural stone, with no vertical slip and long open time. Eco-friendly and superior flexibility with S1 Technology, the Bioflex S1 contains low environmental resins obtained through low energy consumption processes that allow the dispersion in water increasing the efficiency of the deformability performance and reducing the emission of volatile substances.