How to prevent "trailer cancer"

[jsledder]

Anyone with an enclosed trailer probably has this or experienced it, the corroding of the sheeting or cancer as I call it. Mine appears to be occurring mostly around the fasteners near the bottom but some are up on the wall itself. Is it from a reaction between the fastener material and sheeting? I used to think it was from the road salt, but I'm not so sure.... my trailer gets washed after each trip before the wife even has the first load of wash done and it's stored inside most of the time. I plan on re-skinning it in the spring and would really like to prevent this from happening to the new sheeting.

I'm also considering bonding it to the frame rather than using screws.... Any advice on that process?

 

[xc6rider]

Just increased oxidization from screw heads spinning into the sheeting I assume? All signs start showing around the screws and growing out from them?

 

[bobp]

Surprised this hasn't gotten more responses. My Haulmark enclosed has "cancer" on the exterior skin along the bottom rear edges. I suspect it's the "salt" used on the passes. Can these areas of "rot" be cleaned out and filled or does the skin have to be replaced once corrosion sets in?

Hope some of the super techs on this site have some ideas.

thanks in advance

 

[Woodsrider]

I have heard of salt damage to frame inside walls. Might be best to take a look. Also take a look under deck road salt never sleeps.

 

[Rockpicker]

Cancer

Hey Sledder, each time you wash it, if you would take the time to apply the Amsoil blue waterproof wheel bearing grease to the head of each screw on the trailer, I'm sure it would help.