Tetrion Stonefil is a fast-setting, waterproof filler designed for the repair and restoration of natural stone and ceramics. It creates a super smooth, airhole and pinhole-free finish. Ideal for filling holes, cracks, and joints, it also acts as a powerful adhesive. Suitable surfaces include marble, slate, concrete, brick, granite, limestone, sandstone, china, and terrazzo. To use as a filler, mix 100 parts filler with 5 parts hardener. For adhesive use, apply the mixed paste to one surface and join. Clean tools with cellulose thinners before the paste sets. Colour matching can be achieved by adding dry pigments, universal stainers (max 5%), or stone dust before adding the hardener. Performance may vary with temperature; avoid use above 30°C or below 5°C. Once set, it withstands temperatures from -20°C to 100°C. Using too much hardener can inhibit curing. Store in a cool, dry place. Do not return mixed paste to the tin.