Roof weight limits - Page 2 - Fiberglass RV


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Old 02-23-2016, 03:01 AM   #15
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You can get a multi-tool from Harbor Freight real cheap. I was wondering about the waves in the FG too....can you post a good pic or two from a side view ? Have never seen FG do that before.
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Old 02-23-2016, 08:21 AM   #16
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I'm in FULL agreement.... IF that is a FG roof. It looks like a rubber/vinyl coating?? I'd be VERY interested to know exactly what that is. I personally do not believe it's the typical fiberglass resin/gelcoat...no way.

You could build a cheap scaffle to go over the trailer if absolutely necessary....better than caving in a roof...maybe use an outbuilding as one side to mount the scaffle crossboards to or something. Just a thought
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Old 02-23-2016, 08:33 AM   #17
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Originally Posted by Darral T. View Post
I'm in FULL agreement.... IF that is a FG roof. It looks like a rubber/vinyl coating?? I'd be VERY interested to know exactly what that is. I personally do not believe it's the typical fiberglass resin/gelcoat...no way.
That was my initial thought as well. And the next was why? Is there some fiberglass damage underneath, say from a falling tree branch... Deserves a close look for sure.
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Old 02-23-2016, 10:12 AM   #18
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If u gonna get on top of ur roof ! Try putting some plywood acrosd the roof to spread the weight !
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Old 02-23-2016, 10:28 AM   #19
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I don't know how helpful to you, but I've been on the roof of my BF; first replacing the cowl on the original AC and later replacing the AC itself. I found it to be very sturdy, little or no flexing.
I'm right at 200 lb.

Glenn
That's a very simple and helpful tip.

Walt
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Old 02-23-2016, 10:39 AM   #20
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Ok thanks.

Maybe not the best light but here's side shot.

There is no sign, to my eye, of any repair work up there. Everything looks completely unaltered from how Bigfoot built it...
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Old 02-23-2016, 10:40 AM   #21
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I'll be up there finishing off the new vent install today so I'll get more photos.
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Old 02-23-2016, 11:53 AM   #22
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The early 17' Bigfoot models had too little structure support underneath the forward roof section. Over time the convex shape has collapsed so now that section looks bowed inward and wrinkled. Mine looks the same way.
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Old 02-23-2016, 02:40 PM   #23
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Thanks Carol, I'll check that out. Maybe I just need to work on using better search terms.
If your using the Search function at the top of this forum - use the very bottom Google box on the drop down box for best results.
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Old 02-23-2016, 03:26 PM   #24
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The early 17' Bigfoot models had too little structure support underneath the forward roof section. Over time the convex shape has collapsed so now that section looks bowed inward and wrinkled. Mine looks the same way.

Alright, thanks Tom. I don't love it...but if it's "normal", I'll live with it.
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Old 02-23-2016, 03:27 PM   #25
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If your using the Search function at the top of this forum - use the very bottom Google box on the drop down box for best results.
Ok! Yeah I was using the search function up top...
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Old 02-23-2016, 03:28 PM   #26
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I've been on the roof of my Bigfoot many times and I weigh 185 pounds.
The roof is very solid.
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Old 02-23-2016, 03:49 PM   #27
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Ok, thanks.

Yeah, your Scamp is narrow enough that can work. My Bigfoot is 8' wide...

I don't think there's any delaminating. Just ripples in the fiberglass. Except I don't know enough about fiberglass to know if there are layers which can delaminate..? I don't know if it's an age thing or a water damage thing. There is no sign of water damage inside anywhere on the ceiling.
I've never seen ripples like that in a Bigfoot roof. It almost looks like it's got a layer of rubber over the fiberglass. I'd inspect those VERY closely to see what's going on. You may need to go to a shop that specializes in fiberglass repairs (like a boat shop) to see if they can figure that out.

And yes, you need to get all the Dicor stuff off. Kramer's Kampers in Chicago did my 25RB's through-hulls. They use a heat gun and a specially modified air chisel. Good luck!
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Old 02-23-2016, 04:30 PM   #28
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Yeah I think I remember you saying that...but I decided to do it myself anyways

There is, so far as I can tell, no rubber, no repair, no anything going on with the roof, other than those ripples. But since Tom's looks the same way, I'm going to worry a little less about it. I mean I don't like it, but if it's something caused by a bit of sagging, and has more or less stabilized, I won't worry about it unless I notice it holding water.

Thanks!
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