I have to make good some plasterwork in an outside passageway ceiling( backtoback house) after installing new pipework for a wc etc.
The old plaster was held in place with laths and I have had to remove some of this to gain access for the work involved.
Can I now use plasterboard fixed to the now exposed joists to patch the missing plaster and then skim...and if so, is there a specific type of plaster/plasterboard for outside use?
Many thanks for any advice..