Damp motorhome

Simple things first, Check seal is made when window closed. If that's ok then window and frame best taken out to check how bad damp is, dry out then refit frame and rubber seal with fresh sealant. It is probably quicker to do this than trying to reseal in situ as leaks are not always adjacent to where damp shows inside.

Hopefully I will be able to find the time and place before next winter.

Thanks for the advice. I am sure you are right.

All I need to do is find someplace safe and secure to do or have the work done. 

I am thinking of buying a used Swift Sundance 2011 motorhome but was concerned about reports of poor workmanship and water ingress due to this. Has anyone witnessed any problems with this model?