Damp is a silent demon that can wreak havoc on your home, often manifesting itself in dark emanations and evil smells but also capable of carrying out dastardly deeds without you suspecting a thing. Once spotted, you must find the source before embarking on a program of treatment and prevention involving a combination of good ventilation, heat, damp-proof courses, and good maintenance.
Poor ventilation is one of the commonest causes of damp. Buildings need to “breathe” and rely on constant air circulation. Anything that impedes the flow of air through your home prevents moisture from escaping or evaporating and leads to damp.
As well as being bad for your health, this can create huge damp problems, so make sure there is always some provision for air circulation.