text:  That's not the way that a lot of these older bonus rooms were built, where the wall studs just keep going right down past the floor. They brought the floor sheeting right up to it. Then they put sheetrock over that and baseboard, and that gets into what Stanley's going to talk about here next. So no bottom plate, essentially. So there's often a gap from the bottom of the sheetrock and the baseboards that goes directly into the attic.