The thick rustic oak top layer is kiln baked to harden and darken the wood changing its base colour to a rich chestnut brown. The Surface is brushed to add texture and then sealed with a natural oil that is cured with a UV light to produce a warm tactile floor that is both durable and beautiful. Tundra plank is an elegant board with a unique birch ply construction which gives it ultimate stability. TK106 Thermo Oak Plank is available as herringbone format here