Anti-Slip Additive for Imprinted Concrete Sealer to make imprinted concrete surfaces less slippery. Anti-slip additive is added to imprinted concrete sealer to increase the slip resistance of pattern imprinted concrete drives and patios. Apply direct to sealer drum at a ratio of 1 tub to every 25litre drum, agitate with broom during application. Use of this additive will leave surface of concrete with texture of fine sandpaper, but once dry, the anti-slip additive is invisible to the naked eye. Use of this product is always strongly recommended to reduce the slippery nature of imprinted concrete driveways and patios. Only use on final coat of sealer, can be used in greater quantities for extra slippery areas. For further information or application advice please call 01268 722500.