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Old 06-27-2016, 05:43 PM   #1
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Question Subfloor Material

My project is coming along well, but I could use some advice on material for the subfloor. I want to use a type of plywood that will sit flat and solid on top of my rigid floor insulation and be a good anchor for studs and screws. The flooring guy at my favorite wood supplier didn't know what kind of wood would work for this application. Whatever I use needs to be able to handle more extreme humidity changes than a typical home, since the bus will be moving around a lot, and seeing a variety of climates.

If you've passed this point, what did you use? Are you happy with it? What kind of plywood works best for skoolies? Do I need to go full-on marine grade?

As always, any help is appreciated.

Thanks,
-Ike
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Old 06-28-2016, 06:01 AM   #2
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i used 3/4" advantech t&g and 2 1/2" self tapping screws over 1" ins.
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Old 06-28-2016, 08:38 AM   #3
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Thanks, Dave. I had been told that OSB made for bad subflooring, which put me on this quest. However, this product looks to be just what I need in terms of moisture resistance. Are you confident that Advantech osb serves as a good anchor for your build up? Since the bus is often in motion, I worry about added lateral stress causing splintering/weakening at the screws. I love that it's tongue and groove installation.
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Old 06-28-2016, 10:04 AM   #4
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Marine ply is far and away the best choice for a wooden subfloor.
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Old 07-19-2016, 05:48 PM   #5
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Good, so I will go with marine as the subfloor wood. What is the best typr of insulation to use subfloor though? I have a limited budget so I want the mist bang for my buck.
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Old 07-19-2016, 07:01 PM   #6
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Not yet putting down floor but glad of info as I had same questions
Biggie for me is what to do about holes in floor
One person used pennies but that would cause unevenness right
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Old 07-19-2016, 07:44 PM   #7
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https://thecrabshomestead.wordpress....er-school-bus/

This was a pretty cool blog I found and they had some pretty good ideas about what to do with the holes and such.
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Old 07-19-2016, 09:20 PM   #8
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Thanks I had not read that one
Preciate it
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Old 07-19-2016, 09:53 PM   #9
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You're very welcome. I am on the demo phase myself. I have big plans for my bus and I'm really excited to get started.

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Old 07-19-2016, 10:28 PM   #10
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Yeah me too although mostly researching right now it is just too hot and I am doing all myself and I am not young anymore
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