Hi, sadly it is easy to assume that there has been minimal damage caused by a water leak, because you cannot see what is going on behind the panels, but I assure you that the water that has ingressed will continue to do it's dirty work and you would be well advised to strip off a panel and check. Not an easy job I know, but if you value your caravan I honestly recommend that you do some investigative work, it will save you a shed-load of grief later. Also you will be able to track for certain where the water entered, rather than assume that you got the right place. Good luck with it anyhow.
Steve
June 2011