We're buying a house and survey says it has rising damp and penetrating damp. It's an old Victorian detached house that has been a bit unloved and uncared for and has now been renovated by developers. They had it tanked and a new damp proof course done in March - how long should it take to dry out if the work has been effective?! Surveyor is recommending a full damp and timber survey which we will have done but wondering if the problem has already been solved really and patience is required?!