dilute pva

Before someone start yelling at me: NO, I didn't. But sadly the people I got my house from did, and now the bathroom paint is peeling off. :rolleyes: I was wondering what is best: applying zinsser base + paint on top, or I need to take a more drastic approach like sanding it/using other...

It's high summer in the Mediterranean with outside shade temperatures hovering around +35C, and the inside temperature around+30C with 40% humidity. I am trying to wallpaper and am running into problems. The rooms are an old stone farmhouse, solid 800mm thick walls plastered with local lime...