Wooden joineries which are exposed to the weather should be protected against sunlight, rain and fungi at all times.The protective coating of Ultran Lasur fits the requirement and is designed to be water repellent and permeable at the same time. The rain water from the outside will be repelled from the wood substrate while water moisture from the wood can easily diffuse and evaporates through the film. This feature allows the wood to breathe. Because of this, the wood stays dry to avoid fungi attack and decay.