Revisions log for Answer #96

Laying "PVC click vinyl flooring" over the old cork top layer is, of course, an unusual special design. It should be, because there is no fixed connection between the different types of flooring (i.e. gluing), and puncture under the action of point loads (new PVC flooring) can not be feared due to the self-sufficiency of its supporting layer HDF. Only the overall height of the structure should be uniform, so that the doors do not overstretch and do not create a danger to neighboring rooms.