rust on welds?

[jeremy5780]

I have a galv triler i had the crossmembers replaced and where they welded them to the frame I used the cold spray on galv it worked fine for a month or two but I am now starting to see some surface rust. This trailer see's salt water alot! what do you reccomend to stop the rust?

 

[tashasdaddy]

Re: rust on welds?

keep the cold spray on it. clean it up and respray. get a heavy coat on it.

 

[sebago_kid]

Re: rust on welds?

more often than not, if you don't totally get all of the rust out before recoating, or coating originally, it'll rust in no time flat. Wire brush/scotch-brite sand, or whatever down to brite, shiney metal, clean it good with isopropyl alcohol, prime it with a good automotive primer, and cold zinc it. Should be good to go. Gotta get the rust out FIRST.