From a roof top overlooking Vienna, to a garden terrace in the Black Forest: the pur natur »Kollin« terrace blends itself into any environment with its timeless elegance. Douglas »Kollin« terrace floorboards impress with simple beauty. Each individual floorboard can be up to 6.20m (20.3ft) long and in a state of knotless to knot-free. A natural base with white lime pigment gives the terrace their timeless design. At the same time, the base protects the wooden terrace in a natural way and ensures that over the years it develops a beautiful, silver grey patina. The Douglas »Kollin« terrace floorboard is a premium product, made of Douglas wood from sustainably managed forests in Germany and Europe. Even without waterproofing or annual intensive care, your floor will be preserved for a very long time: Douglas »Kollin« develops at the very most only minimal cracks.