Am renovating 1930's house, and after stripping wallpaper of bedroom walls have found what appears to be some sort of oil glaze over a distemper base (pic attached). Have tried removing oil glaze but apart from strong caustic soda nothing -even Nitromors won't touch it. Using a scraper and much elbow grease parts of it will come away, but it is all over the walls and ceiling, so would rather seal it and skim over with plaster.
What would you recommend to seal it - PVA/WBA or an oil based primer/paint?
Also -I have some PVA from a local builders merchant but it is quite thick - do you use it neat or watered down?
Cheers
Ed
What would you recommend to seal it - PVA/WBA or an oil based primer/paint?
Also -I have some PVA from a local builders merchant but it is quite thick - do you use it neat or watered down?
Cheers
Ed