Osmo Gap Sealer is a quick and easy way of filling gaps or cracks between interior floor boards. The range of colours match a range of floor shades and can be sealed with Osmo Polyx Oil within one hour of application! Key Points: Useable on wood, plaster, stone and concrete Sticks well to porous surfaces Once cured, it is elastic so can move to the boards without cracking Permanent water resistance Acrylic-based Fully cured after 24 hours for sanding The joints will need to be clean and free of dust, grease or rust. On non-porous surfaces no priming will be necessary. On porous surfaces such as concrete, stone, cement or plaster priming will be needed - use a mixture of one part sealer to 4-5 parts water. It should be applied between temperatures of 5 to 40°C. Immediately after application, immediately smooth the sealer with a wet finger or a smooth out tool. Any excess sealer can be removed with a wet cloth. Keep the sealed joint dry for a minimum of two hours. Do not apply to areas that are permanently exposed to water or if rain or frost is likely. Available colours: White, Pine, Light Oak, Medium Oak, Dark Oak, Walnut, Grey, Black. SPECIFICATIONS: Minimum joint width: 3mm Maximum joint width: 25mm Drying time: 1 hour for refinishing, 24 hours for sanding Coverage: 30 linear metres/310ml (3mm gap) Joint depth/width ratio: 1:2 SAFETY DATA SHEET DOWNLOAD PRODUCT DATA SHEET DOWNLOAD