Ash, which completely without knots, has a superior visuality thanks to its color and grain structure on the surface. It is included in Durability Class 1 according to European Technical Norms with Thermowood process. Tantimber Thermowood Ash products are the best alternatives to feel the texture of wood with unique grain texture. Offering the longest possible service life, Thermowood Ash is often preferred in cladding applications. Depending on the climatic conditions and the correct way of installation technique, the service life is up to 60 years.