UltraTile ProGrout Flexible has been designed for areas where movement or vibration is likely. Polymer has been added to the formulation to increase flexibility and to provide a virtually impermeable set. Suitable for all tile types including ceramic and porcelain, and ideal for wetrooms, swimming pools and underfloor heating. ProGrout Flexible is packaged using the latest plastic packaging technology, offering you greater product protection and prolonged freshness. This BAL tile grout can be applied to walls and floors with joint widths between 1mm – 20mm. It has a working time of 30-60 minutes and drying time of 12 hours.