Kiesel Servoperl royal high-performance grout is smooth and easy to use. It is mould/mildew and stain resistant as well as water repellent and so it requires no sealing and can be used in wet areas and with heated flooring. With antimicrobial properties and zero VOCs it can be used for floor, wall, interior, exterior and submersible applications such as pools. It is high-strength, high-performance, flexible grout that is suitable for areas subjected to heavy use.