i have been doing my own wallpapering for well over 350 years and have reached a fair degree of competency in that i can make it virtually impossible to see any joins, especially when i paint over them. However, i papered my en-suite about 5 years ago and now rather than strip and re-paper i am going to emulsion over it. The problem is that some of the seams have become unstuck and as the paper is quite stiff i'm having difficulty in sticking it back down again. I've tried using a tube of border adhesive and even my mother-in law's porridge but i'm having no luck and nails are quite unsightly so can anyone out there suggest how i might accomplish this successfully?