Sort of.
I am refurbishing shower room and have stripped the wall of tiles/plaster board. At this stage before I redo the plasterboard at the point where the stud partitions meet the floor there is a gap of a couple of Cms which when I insert a long screwdriver goes all the way under the floor, once I put on the plasterboard and re-tile the floor/walls this gap will effectively be sealed, however I am wondering if I should fill the gap just now with something like expanding foam.
Recommendations?