Jeff,
A little like you I have always been the inquisitive type and to a point I have and will continue to question the establishment if I feel that systems can be improved upon, it's referred to as progress.
Some people for one reason or other will not say no even when it's costing them money we all know that the issues stem from water entering the caravan causing damage. How much simpler can it be than that can it be?
I would like to think that manufactures active in the market place by now are technically competent and are fully aware of possible causes of water ingress, resulting in interior damage due to damp. I would assume they sit around a table and discuss in a team meeting the necessary steps to be taken to prevent by design the possibility of rain water entering the caravan externally.
Obviously not...
How can a company's claim to have years of experience on one hand, but still have to deal with warranty issues that should have been designed out years ago.
The truth is it's our fault for putting up with it.
People who for all intents and purpose seem to accept the risks associated with damp when buying even a brand new caravan I have read blog's on this forum about damp issues like the subject is new and in no way common to caravan owners, lets be honest if you have three friends with caravans the chances are one of them has experienced problems, the subject could be compared to as game of Russian roulette. No damp, No issues, aren't you the lucky ones.
Once you have experienced the effects of dealing with damp in your caravan most people are inclined to get rid of that caravan as soon as possible blaming that particular manufacturer of incompetence during the build stage.
I personally wonder if manufacturers consider the gut wrenching feeling you experience when you discover that your pride and joy is rotting from within.
When in trouble you will go to any length like you, to fight back attempting to prove your observations are well founded, but that means you have to re-educate others to acccept
a time for change.
No doubt between us and fellow forum members we could make lots of suggestions on how to improve the so called modern caravan anyone interested..
Bob