I bought my house almost 8 years ago, looking back it had clearly been bodged to sell, hind sight Ey?!! I'm currently redecorating a bedroom, it was decorated previously by myself about 7 years ago without any problems yet now, while painting one of the walls with a medium pile roller and matt emulsion the paint is bubbling and peeling off once the new paint has soaked in a bit. The wall looks like it was re-plastered before I bought it, to be honest it looks like the plaster was thrown on from the other side of the room!! I've looked at the stuff that is peeling off and can distinguish between the paint I used to decorate originally and what seems like a really thin stretchy layer that must have been applied to the new plaster. I'm thinking that the cowboy that bodged it used too strong a mix of PVA and emulsion. How can I solve this problem? Once painted, it can be peeled off on hand sized sheets but where it is dry it's hard to get any off with a scraper. I don't want to waste paint just to be able to peel it all off and start again and I could do without sanding off all the dry paint. Will I be able to PVA over everything, let it dry then begin painting again. It will be patchy of course but I want to give it 2 coats anyway.