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Old 05-11-2018, 08:51 AM   #1
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1978 31' Sovereign
Waxahachie , Texas
Join Date: Feb 2018
Posts: 6
subfloor seam placement

So we are finished with our tear down and I am having my frame rebuilt. The placement of the subfloor by Airstream appears to have put the seams over the 5" C channel making the center of the floor a solid piece and from the outriggers to the shell a separate piece.

At first I felt this only weakened the floor and I thought of simply laying my subfloor across the entire width with no seams. Now I am wondering if that seam on the C channel was so that if there was flex it wouldnt break the subfloor structure.

Should I make seams over the C channel to the outriggers or should I lay my subfloor as a solid width with no seams to the outriggers?
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Old 05-11-2018, 09:08 AM   #2
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1974 27' Overlander
Baltimore , Maryland
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Quote:
Originally Posted by The Beard View Post
So we are finished with our tear down and I am having my frame rebuilt. The placement of the subfloor by Airstream appears to have put the seams over the 5" C channel making the center of the floor a solid piece and from the outriggers to the shell a separate piece.

At first I felt this only weakened the floor and I thought of simply laying my subfloor across the entire width with no seams. Now I am wondering if that seam on the C channel was so that if there was flex it wouldnt break the subfloor structure.

Should I make seams over the C channel to the outriggers or should I lay my subfloor as a solid width with no seams to the outriggers?
My subfloor was a solid width, and that's the only way I've seen it in others' projects. I suspect if you have a seam in that location, your subfloor was replaced at some point. When replacing, I'd do the entire width as one piece if possible.
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Old 05-11-2018, 09:40 AM   #3
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1976 25' Caravanner
Kansas City , Kansas
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Totally agree with TheGreatleys. I don't think the factory ever installed subfloor like you mentioned. Go with full width sheets, it will be easier (assuming shell off).
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Old 05-11-2018, 09:52 AM   #4
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I agree also, full width. I placed all my joints over crossmembers. I had to move/replace a number of crossmembers to accommodate tanks. I also splined all the subfloor joints. Mainly to keep the finished floor from damage due to movement.

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Old 05-12-2018, 11:37 AM   #5
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1978 31' Sovereign
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Great thank you. I started overthinking it. My entire AS came this way., that’s why I was thinking it might have come from the factory that way.
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