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Old 11-26-2012, 02:43 PM   #1
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1969 27' Overlander
bainbridge island , Washington
Join Date: Nov 2012
Posts: 7
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I have a 27' Overlander. Body is off the frame and chassis has been repaired, re-welded, and powdercoated. The existing flooring was so badly damaged that I could not use as a template. What is common procedure for determining accurate dimensioning for the replacement floor? What material is recommended for use as replacement sub-flooring?

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Old 11-26-2012, 08:30 PM   #2
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1973 21' Globetrotter
Houston , Texas
Join Date: Sep 2009
Posts: 1,902
Your best bet for reproducing the shape of the floor sections is to use the body itself. Can you lift up the body enough to get a piece of cardboard or masonite under it, to trace the edge? If not, you can trace the edge of the C-channel, and then add the thickness to get the final dimension.

As for material, it is probably 5/8" plywood, but your best bet is to measure the thickness of an actual piece of floor that came out of it. It may be 3/4". It is important that you match the original, or the holes in the front hold-down plat won't line up again (assuming the plate hasn't been replaced in your reconstruction).

There is a general preference for using marine grade plywood, but I am not convinced this is a necessity (I used the marine grade, and it was around $75/sheet for 3/4"). Whatever plywood you use, you should seal it up, at least along the edges, to prevent a repeat rot-out. I used a few coates of polyurathane.

Good luck!
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