Fitting skirting and avoiding damp

An L shape metal bracked, small part of the L screwed onto floor and the skirting screwed to the other part. OR A wood batten screwed along the floor, the bottom of the skirting could be screwed to this and the top part of the skirting to the plasterboard.

I would find some blocks of plastic (or something impervious to water) the same thickness as the plaster, and stick them to the brickwork with Gripfill/Stixall just above floor level at regular - maybe 150mm - intervals. Then fit the skirting - with a a bead of adhesive near the top to meet the plaster, and a dollop on each plastic block. The skirting will then be adequately supported both at the top and bottom - without creating any water transmission path.

I would find some blocks of plastic (or something impervious to water) the same thickness as the plaster, and stick them to the brickwork with Gripfill/Stixall just above floor level at regular - maybe 150mm - intervals. Then fit the skirting - with a a bead of adhesive near the top to meet the plaster, and a dollop on each plastic block. The skirting will then be adequately supported both at the top and bottom - without creating any water transmission path.

Additionally, don't use MDF skirting unless you are sure the area is now bone dry and will stay that way.

Additionally, don't use MDF skirting unless you are sure the area is now bone dry and will stay that way.

The spacer thickness doesn't have to be exact - as long as it's *less* than the plaster thickness - because the Gripfill/Stixall or whatever will fill any slight gaps.

You could possible use the sort of plastic spacers used by window or door fitters - maybe something like