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DIF good at softening the adhesive for removing wallpaper, not fantastic at actually getting it off the wall - it tending to soften it and smear it around, We found
-> paper tiger
-> DIF spray twice
-> warm sugar soapy water and scrape off excess glue, or a quick blast again with the steamer
-> sandGave best results, having done 3 floors worth of wall. I’d imagine it is dependent on adhesive used.
I've not used it before but I think DIF from Zinsser will do it :-
https://www.screwfix.com/p/zinsser-dif-wallpaper-stripper-concentrate-1ltr/8421J?tc=PB4&ds_rl=1243321&ds_rl=1241687&ds_rl=1245250&ds_rl=1245250&gclid=CjwKCAjw9J2iBhBPEiwAErwpeacXtdMezUYlT4-0zRVmkQ7qVTw-sJparthuE5pPUSXHmRXU_vWc6BoCns0QAvD_BwE&gclsrc=aw.ds