Rotten trailer frames,
I hear a lot of airstreamers having frames that are rotting out.
I suggest you get the frame of your trailer oil sprayed.
One such company at least in Ontario is your Krown undercoating centers.
These trailers are a huge investment. Like a car or truck maintenance is important. We have some severe weather at times in winter ,but alot of airstreamers don't consider the damage that can be caused by having your trailer near ocean areas or high humidity climates.
Might think of using this option (Krown undercoating) to protect your investment.
Mine is getting done forsure this year!!!!!!!!!!