i plastered down the side entry of this house about 18 months ago and its well covered (as she uses it as a wash/laundry room,fridge in there etc etc),anyway its all ok apart from the paint has started to blister OR the plaster underneath is playing up and bubbleing (no probs with it up until now)....anyway its only in this one place/area where there is a couple of pains of glass in the roof area and the sun is shining through it all day so its like a fecking greenhouse in there when the sun is out...everywhere else is sound but this one area under the glass roof space.....just need some advice on what to do as i aint had this type of thing before and want to put it right for the old dear....p,s, i used multi on it 18 mths ago...