The Polycell Polyfilla Trade Wood flex is flexible, stainable, water-resistant and bonds strongly to wood. It is suitable for wood repairs inside and out. The natural coloured product comes in 600ml tub. The product gives a smooth and flexible finish. It is water resistant and can be used in highly humid areas thus preventing shrink, crack or crumble of the wood. It can be used for both internal and external applications. The product is strong and durable which makes it long-lasting.