I need some advise about installing the 3/4 solid oak plank over concrete ! I've been instructed a few different ways , and one was to install the plank over 3/4 plywood which is fastened to the concrete . Another is , install it with adhesive to the concrete without nailing.. I'm alittle confused ! I don't really agree with the just "glueing it" idea ..But than again I'm not a professional @ laying floors .. Can someone please advise !!!