hello, does anyone know how to sort out paint crazing? painting (white trade dulux matte emulsion) onto the original paint (done by former owner, not sure what he used but to be honest he was a bit eccentric so it could be anything). The first coat crazed uniformly over three walls on drying. We tried a small patch of undercoat which looked ok, but on painting over it isn't smooth; also putting dilute PVA on the walls before painting again; and also tried diluting the dulux emulsion slightly so it went on better. This has made no difference and this second coat is now crazing. Hubby is not keen to do wallpapering!! Any help gratefully recieved. 