If you want the toilet please raise your hand and wait to be excused.
Look for damp with a meter everywhere. Expect damp and be surprised if you don't find any.
Lift the window rubbers and look for clean white wood, nothing wet and dark.
Cheers
SPD
oh you actually meant there's such a thing as a damp meter
i'm going to have to do some proper looking into spotting damp, i'm looking to spend around £2k which to me spending on a first time tourer van is a lot so i don't want to end up with a lemon, cheers for the advice!