A grey, thin-bed, ceramic tile adhesive, with excellent non-slip characteristics. Has a regular setting speed and forms a strong bond to fully vitrified tiles and is ideal for tile-on-tile work. Its flexibility allows it to be used on backgrounds subject to limited movement, flexing or vibration and underfloor heating systems. CTA Flexible is completely waterproof, frost-resistant and is suitable for interior and exterior use, particularly swimming pools, showers, saunas. and bathrooms. This product is ideal for use on porcelain tiles. CE Approved.