Hi,
Prior moving into my house a damp course was installed, evidently by cowboys, who have been back but said I needed to coat in a vinegar type solution and something similar to PVA. I did all this and having wallpapered there's a patch showing. Interestingly the damp co also did the survey for the house and said everything was okay; which evidently it wasn't; but that's another story.
I don't want to strip the paper off so if I coat the paper with either an oil-based undercoat or damp seal, then emulsion over, will it show through?
Prior moving into my house a damp course was installed, evidently by cowboys, who have been back but said I needed to coat in a vinegar type solution and something similar to PVA. I did all this and having wallpapered there's a patch showing. Interestingly the damp co also did the survey for the house and said everything was okay; which evidently it wasn't; but that's another story.
I don't want to strip the paper off so if I coat the paper with either an oil-based undercoat or damp seal, then emulsion over, will it show through?