Short bet seam rust.
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Junior User
Joined: Oct 1999
Posts: 55
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Short bet seam rust.
IF I'm at the wrong forum please send me to the right place. On my 72 Ford short bed I have pulled all the rust out of the horizontal seams that run the full length of the bed that are always rusting. Twice I've had it to the paint shop in the last year and the rust returns and I'm out 6 hundred bucks. This time I'll do it myself. They weren't removing the rust, they were just covering it up. Question is, I have a gap of from one half inch down to about on eight inch. What should I use to fill in the area? Fiber glass, bondo, seal seam?I have already cleaned it up and put rust inhibitor on the area and it has done it's job and turned black. Shouldn't this area be repaired with the understand that there will be expandsion at the seam joints? Is that why seal seam is used?
Waiting for your answers.
Waiting for your answers.
Posting Guru
Joined: Jul 1999
Posts: 1,558
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From: Inthepast
Short bet seam rust.
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There is a thread on this in the Bodywork forum, but your fine here. :-) Your experience is far too common. Most shops just seal in the rust. Essentially, here is what I said over in the other forum:
This seam is particularly tricky due to the fact that it is created by two panels being joined together. Rust forms inside this joint (which is essentially bare metal) and works its' way out to your paint job. A quality job will require you to seperate these two panels, address the rot/rust issues and then spot weld them back together. Most repairs I have seen attempt to correct this without seperating the panels. The latter methd can be effective provided your truck will not see much exposure to the elements again. Regardless of the method you choose, you must chemically treat this seam or it will undoubtedly lead to rust bleeding out from within. You did that, so hopefully the repair will last a little longer for you this time. But of course, there are no guarantees are there? BTW--this seam is supposed to be sealed with the flexible body sealer prior to paint application.
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There is a thread on this in the Bodywork forum, but your fine here. :-) Your experience is far too common. Most shops just seal in the rust. Essentially, here is what I said over in the other forum:
This seam is particularly tricky due to the fact that it is created by two panels being joined together. Rust forms inside this joint (which is essentially bare metal) and works its' way out to your paint job. A quality job will require you to seperate these two panels, address the rot/rust issues and then spot weld them back together. Most repairs I have seen attempt to correct this without seperating the panels. The latter methd can be effective provided your truck will not see much exposure to the elements again. Regardless of the method you choose, you must chemically treat this seam or it will undoubtedly lead to rust bleeding out from within. You did that, so hopefully the repair will last a little longer for you this time. But of course, there are no guarantees are there? BTW--this seam is supposed to be sealed with the flexible body sealer prior to paint application.
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Senior User
Joined: Jan 2001
Posts: 223
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From: Coquitlam, BC Canada
Short bet seam rust.
First you have to stop that rust if posible then what I would do is get the bed sprayed with plastic bed liner at a good shop. But it might still rust from the bottom. I went to a shop once and they said to take off the box and then they could spray the bottom to. This will seal the top really well.
Just an idea?
Good luck
Joe
Just an idea?
Good luck
Joe
