For some reason none of the new tiles i have just put up on the bathroom wall will adhere, after leaving them for 24 hrs they were easily pulled of the wall with
all the adhesive stuck to the tile and not a trace on the wall and it still felt quite wet to the touch and quite crumbly. The adhesive used was unibond and the wall surface was skimmed plaster board wall which was skimmed many moons ago which had just been emulsioned over so i scraped off all the emulsion but forgot to wipe clean and did not prime surface,could these be the reason for my unsuccesful attempt at tiling?
all the adhesive stuck to the tile and not a trace on the wall and it still felt quite wet to the touch and quite crumbly. The adhesive used was unibond and the wall surface was skimmed plaster board wall which was skimmed many moons ago which had just been emulsioned over so i scraped off all the emulsion but forgot to wipe clean and did not prime surface,could these be the reason for my unsuccesful attempt at tiling?