It can be difficult to determine if a room needs plastering, as it depends on the extent of the damage. However, some signs that suggest you may need to call in a professional include water leaking from ceilings or walls, warped flooring or doors, and severe deterioration of walls and ceiling. If you notice any of these symptoms in your home, it is best to have an inspector check out the situation first. If your assessor determines that repairs are necessary, they will likely recommend using a combination of plasters (including foam and spray) to restore stability and protect against future damage. Depending on the severity of the issue, this job may take several days or weeks to complete. So make sure you keep track so you don’t encounter any surprises down the road!