Forever White Powder Wall Tile Grout is a cement based powdered grouting compound with added PVA to promote adhesion and water repellents to shed water. Simply mix with water to give a pure white paste. Can be used on wall joints up to 3mm. Contains mould shield for long lasting protection against discolouration caused by bacteria, mildew and mould growth. Waterproof for showers, bathrooms, wet rooms & kitchens, power shower proof, repels water.