A question or two----What kind of plaster?--Wood lath with plaster or plaster over gypsum board?
If possible use drywall adhesive and a minimum of screws----often the screws will pop a chunk of plaster loose--causing a hump under the new drywall.--Mike---
If possible use drywall adhesive and a minimum of screws----often the screws will pop a chunk of plaster loose--causing a hump under the new drywall.--Mike---