Single brick out house using Plasterboard

[clematised]

I am changing use of the single brick outhouse which is attached to the side of the house for a utility room.
Most of it I have tiled but there is an enclosed toilet which I will tile the lower walls and wish to add plaster board to the top half so how do I do it.

I bought plaster nails but my son says I have to dot and dab the boards to the walls and he says I need to buy ready mixed plaster and add water

Is this correct as I will use wallpaper and would hate it to go black with mildew

Edna

[kbrownie]

HI clematised,
Yes you best dot'n'dab but use wall board adhesive, not diluted ready mixed plaster to stick to walls.
Regards
KB

[clematised]

Thanks KB will do as you say

Edna