Damp (or Water Ingress as professionals like to call it) is a big problem for caravans, especially if they are not regularly serviced and seals checked. By the sounds of it, the problem is big if it has engulfed an entire wall. If you want to attempt anything yourself you should store the caravan indoors and run heaters and de-humidifiers inside the van to at least dry it out. Long term you will need to find a professional service centre - caravans are very specific, especially with regards to windows, seals, wall boarding, so not any old joiner will do. Thirdly, and really if all else fails - depending on the age of the van and relative condition - find some one who would buy it as either a project or for spares.
Brian, February 2005
