Hi all, I've got a knackered lath and plaster sloping understairs cieling with great lumps of plaster missing and other plaster just hanging on. Rather than hack off and replaster, I am considering putting up plasterboard. Will it be OK to screw some battening to the walls at cieling level and screw the plasterboard into those? i.e. there will be no central support for the board. The width and length of the cieling are 96cm x 190cm.