Hi, hope someone can help. I own a house 100+ yrs old and need to repair the plaster on an outside wall that is in poor condition. I will attempt most things however I'm not so sure about plastering a whole wall. I was thinking of drylining this wall. Should I dot and dab or batten. The wall is quite thick however there is no cavity in the wall and the house can suffer from condensation at times.
Answered much the same type of question on another post.
Apply a liquid d.p.m. to stone/brick wall,
then fix stud work and insulate in between stud work,
vapour check barrier this can be fixed seperate or be part of a plasterboard system.
Then fix plasterboard (if not using the pre-vapour checked board)
With solid walls it is important that the internal surface can breath to get rid of moisture/condensation.
If you cover the wall with plasterboard the evaporation cannot take place and any condensation (which will get to the cold outer wall through the egdges of the plasterboard) will appear as water coming out across the floor.
Stick with a proper job - replaster the wall.