Keystone rv raptor roof dealer must have pulled it to lot through salt and parked it without washing salt off.
Roof frame rv rusted.
When a surface is rusted it continues to trap water will flake and then continue to rust.
Keystone must put the thinnest coat of paint possible on frame.
If you don t remove t.
You can flush water through the frame then follow up with compressed air to help the inside dry.
You need to remove all of the rust prior to repainting the surface.
When i got it home crawled under unit to check things out rusted frame rusted stabilizer jacks rusted gas line fasteners.
Once this is complete the entire frame is painted with a rust resistant primer.
It s important for consumers to know the underside of an rv might not be entirely corrosion resistant.
Any steel element of the rv that was not part of the ford chassis had rust on it.
For severe rust which covers a large percentage of the frame or has begun to cause pitting or scaling on the metal a body shop like central body co inc is your best repair option.
After years of driving the tubing can become filled with rust dirt and gravel allowing for moisture to soak and eventually rotting out the frame.
A light coating is not a problem but if the rust is thick it will eat right through the metal.