Getting rid of damp can be a constant battle if you don’t or can’t irradicate the problem in the first place.
Check for leaking gutters, and make sure your roof is in excellent condition. Drying clothes indoors is one of the largest attribures to a damp problem unles you have the right exhaust system fitted to the dryer.
If you hang wet clothes up in your bathroom to dry where do you reckon all that moisture is going ? Yes that’s right it’s going back into your home. Warm moist air will always be attracted to the nearest cold spot, usually a place in the corner of a room down near the skirting boards.

Once this happens your wallpaper or wall treatment will start to deteriorate as the moister builds up over time. The simplest way to combat this kind of damp it to buy a excellent dehumidifier.