General description Polycell Polyfilla Woodflex is a flexible, stainable, and water-resistant filler that bonds strongly to wood, making it ideal for both exterior and interior repairs. Technical specifications Volume: 600ml Drying Time: 2 hours Recoatable: 2 hours Usage Apply directly from the pot. Press the filler well into the repair and smooth it level with the surrounding surface using a wet filling knife, angling surfaces to shed water. The filler dries to a smooth and flexible finish, and it is easy to sand.