Hi I would like to install a small stud wall in a small room, the room has a laminate floor laid already, can I screw the stud wall base plate to this or should I cut the laminate floor take it up and screw the base plate to the screeded floor below?? Also in the room the part I wish to section off has two, what look like lintels can I screw the head plate to this as it would be ideal ? Many thanks Barry