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Old 10-29-2015, 04:51 PM   #1
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Best way to correct a bent down roof?

My daughter's bus (which I'm working on) was used as a Burning Man vehicle for about 9 years, and that included multiple occasions of people dancing on the roof - up to 20 apparently. As a result, the rooftop is a little low in the middle, maybe 3/8 inch or so. It's not a lot, but it does mean water pools up on the top of the bus.

Right now the interior is gutted, and I've propped a few long pieces of wood between floor and ceiling ribs to push it up. If I remove them, the roof goes back down a bit. I suppose if I leave them a while (or push so hard I actually put a bend in the ribs) that might make it permanent.

Thoughs? Anyone else dealt with this?
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Old 10-29-2015, 04:59 PM   #2
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Are you saying the ribs are bent in?...or just the sheetmetal?

If the ribs...there must have been a few elephants up there.
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Old 10-29-2015, 07:55 PM   #3
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Take the inside skin off in that area and the one next to it.
The one next to it is to make a template of something healthier than the sheet metal that is there, also to inspect the ribs.
Jack or brace it up tight and go on the roof and start straightening the roof metal where the brace/template is.
After the inside is off you could just use a bigger hammer or body puller (they work both ways) and bondo later? If the ribs are bent it will always be a risk until they are fixed. I know there are several threads here that cover roof raises!
I don't think I have ever seen one that covered having to fix a roof rib?
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Old 10-29-2015, 08:49 PM   #4
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It's the ribs - they are bowed down a bit. It's not a lot, but it's enough to pool water. And the skin is off, so I have full access. The ribs aren't bent much or actually bent to the extent where I think they are structurally unsound, but they definitely have a bit of a dip in them. Call it a sag perhaps.

It's what you get with 20 people dancing on the roof at Burning Man for 9 years, and exactly why putting an actual deck on top isn't such a bad idea ;)
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Old 10-29-2015, 11:33 PM   #5
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Try a hydraulic jack to push the steel back up to where it belongs. You will have to go a little past that point but adding some heat with the pressure should help. Otherwise...it may call for transplanting a few new ribs.
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Old 10-29-2015, 11:48 PM   #6
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Try a hydraulic jack to push the steel back up to where it belongs. You will have to go a little past that point but adding some heat with the pressure should help. Otherwise...it may call for transplanting a few new ribs.
Rib transplants! I like that
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Old 10-30-2015, 08:03 AM   #7
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or push it up past level (3/8 or 1/2 inch) and using a rosebud tip, heat the rib some and then let it cool, don't go red/orange hot
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Old 10-30-2015, 01:23 PM   #8
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Why would anyone let 20 burners dance on their roof? Next time throw up a bar of soap before they do damage.
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Old 10-30-2015, 02:01 PM   #9
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Why would anyone let 20 burners dance on their roof? Next time throw up a bar of soap before they do damage.
The PO was a burner, as are my daugher (the new O) and I. Here are a few pictures of it in it's previous life discovered while digging around...






Apparently the bus has a lot of stories to tell, some of which I don't think I want to know. One of the first things that had to happen was to remove all the red fur on the inside...
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Old 10-30-2015, 02:05 PM   #10
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love burner pictures
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