Shower floor
The floor in Our motorhome feels a little spongy..we have tried to firm it up some by adding more 2X4 pieces of wood under it..have considered stuffing some styrofoam blocks under it,,,,,any suggestio...
Forum Discussion
Buy a can or two of the expanding foam insulation. Try to damn the area under the shower so the foam can't escape out the sides and fill the cavity. If you ever need to get to the drain, you can always cut out the foam if a repair is needed.
