UltraTile ProPave Grout is a high specification, decorative, brush-in external tile jointing solution, suitable for use with granite, porcelain and other premium quality natural stone. With ColourShield technology for a vibrant finish, ProPave Grout is the perfect choice for a seamless transition for tiles inside, to outside living spaces.It can be used all year round, in any weather and is suited for use on domestic paving applications or light not-traffic commercial areas. It is used to fill joint widths between 3-20mm. To apply once tiles have been laid gently pre-wet the surface, this will prevent the jointing from staining the tiles. Pour the jointing sand on the tiling and brush into the joints ensuring they are filled to capacity. Top up any joints that need to be filled and wash off excess material. In good drying conditions the grout takes approximately 24 - 48 hours to firm.