Grooved and 4 faces tongued planks come with varying lengths, from 150 to 450 cm in mix first quality homogeneous, bis and rustic. The initial thickness of the plank is 20mm but can be reduced or increased depending on the width of the plank of flooring and the type of installation.
The installation for sound and heat insulation will be done either by gluing or by nailing on the joists.

Below is the disposal larges in unrefined oak, aged finishing applied while machining or after installing.