HI, WE MOVED INTO THIS HOUSE 13 YEARS AGO AND ON DECORATING WE QUICKLY FOUND THAT WE NEEDED TO STABILISE ALL SURFACES BEFORE USING EMULSION PAINT, IHAVE PAINTED THIS CEILING TWICE AND HAS BEEN NO PROBLEM THIS TIME HOWEVER WHEN I WENT TO PREPARE THE CEILING THE PAINT CAME OFF IN LARGE SHEETS LIKE WAL...