In some rooms in our house the paint on the walls has begun crack but in others there are no problems. We have only bought the place 2 years ago and so don’t know whether various walls have been painted at differing times or with differing paints.
How do you find out whether it is just a case that they need repainting or whether there are other issues such as rising damp (which is why some walls are affected whereas others are fine)? The house is about 100 yrs old and on a sandstone base but we have only noticed the cracking recently and it has been particularly dry weather here (in Sydney).