A current customer has "ghosting" of studs, and ceiling joists showing through the paint on walls and ceiling. She has asked me to investigate the cause of this. I suspect that part of the problem may be inadiquate venting of the attic ( there are two gable end vents, but no soffit vents). I have not yet been in the attic to see if there is a vapor barrier, but if there is it is probably only craft paper on batt insulation. There is blown in cellulose that we foound when soffits were removed in a kitchen remodel.
Any ideas and suggestions are appreciated.