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Old 03-29-2021, 05:11 PM   #1
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Join Date: Oct 2020
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Patching rusty roof seems

Recently got on top of my bus and found some rusty cracked spots right on rib seams. Thankfully I haven't noticed any roof interior leaks yet. The interior panels are totally gutted with the factory insulation removed. Bare exterior panels.

Short of removing all rusty sections with a grinder and patching in new metal is there a more practical treatment for these seams? Possibly sanding welding or seam sealing the spots and putting on some rust-oleum?
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frostyllama is offline   Reply With Quote
Old 03-29-2021, 06:14 PM   #2
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Join Date: May 2015
Location: Miami, Fl.
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Year: 1999
Chassis: Amtran / International
Engine: DT466E-Md3060
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Originally Posted by frostyllama View Post
Recently got on top of my bus and found some rusty cracked spots right on rib seams. Thankfully I haven't noticed any roof interior leaks yet. The interior panels are totally gutted with the factory insulation removed. Bare exterior panels.

Short of removing all rusty sections with a grinder and patching in new metal is there a more practical treatment for these seams? Possibly sanding welding or seam sealing the spots and putting on some rust-oleum?
The last picture, looks like the front cap? Yes ??
How far does the panel slide under the front cap...2 inches ???

I would look inside and if you have no rust issues I would just clean up the top, apply some OSPHO, seal it with an epoxy paint then apply seam sealer.
But that just me...
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Old 03-29-2021, 06:19 PM   #3
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Originally Posted by ewo1 View Post
The last picture, looks like the front cap? Yes ??
How far does the panel slide under the front cap...2 inches ???

I would look inside and if you have no rust issues I would just clean up the top, apply some OSPHO, seal it with an epoxy paint then apply seam sealer.
But that just me...

Yes and yes. I'll inspect the interior a little more closely. I like that fix better than complete replacement

Edit: was also debating on what to coat the roof with elasto or other. This marine epoxy paint looks promising
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