No do not put pva on it, if you do then the moisture can not escape through it if its not a warm room then it can take a couple of months to dry especially if its been patched underneath the skimming aswell, you could have a bit of damp underneath also, put your heating on and open the window slightly to let he room breath whilst being warm and see if it dries first.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!