The most important wood sorts are cedar, mélèze, thermowood and other thermally treated sorts, afrormosia, ipe, padauk, accoya, and such like. The invisible fastenings Hard Wood Clip ® and Soft Wood Clip® (thermally treated wood) are also deployed for 7mm and this makes it possible to guarantee the perfect distance between the planks, depending on the sort of wood. At the same time, the planks can more or less be adapted according to aesthetic preference. Two groove profiles are available: TWIN is a standard profile, reversible, and symmetrical (3-7mm). DROP is a newly certified profile for closed planks, semi-open, or open.