I'm redecorating our bedroom and when removing the hideous brown paper, the lining paper underneath has stayed put surprisingly.
Therefore, how do I prep this lining paper for painting? There are a few small tears and lifting edges which I presume I need to fill and glue respectively? It looks like all the backing paper came off with the brown wallpaper so do I need to sand the walls down? Then i was thinking a thin coat of white emulsion to seal it?