went to price up a small bedroom the other week .. it had wallpaper on the walls the customer has stripped the wallpaper of all the walls but rang me up panicking cos has he pulled wallpaper off the old skim came off with it ...told him not to worry and all that ... the walls are still pretty much flat apart the render that is there now is bone dry .. do i just pva as normal and skim or is there somet else i need to be doing ??? advice please guys