a very good idea, although we were hoping to avoid having to lift the vapour barrier, but might be easier than the other alternatives. thanks for the very obvious answer! :)
Hi
We are refitting our kitchen and are planning to tile the floor, which is currently a concrete base topped with polystyrene slabs (presumably for insulation) which is then covered with a plastic sheet for the moisture barrier. On top of this is chipboard (floating, locked-together sheets)...