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Old 12-01-2007, 06:14 AM   #1
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Subfloor


This question is something you'd learn back in Grade 1 but amazingly I don't know the answer!!

I'm building a 8 by 8 subfloor with 2x4 pressure treated lumber in my basement bathroom. Now here's the brain teaser...crown up or down?
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Old 12-01-2007, 02:27 PM   #2
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Subfloor


It's crown up and you don't use pressure treated wood.
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Old 12-01-2007, 03:07 PM   #3
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Subfloor


The other Ron is right
Crown down would have hollow spots in the subfloor which would create havoc with your new flooring
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Old 12-02-2007, 12:18 PM   #4
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Subfloor


He is building a subfloor to be placed on the basement concrete is how i read it. I WOULD use pressure treated 2x4s for this since the wood is going to be in contact with concrete which has moisture in it. Whenever you frame a wall in the basement the bottom plate is always treated wood.
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Old 12-03-2007, 07:05 AM   #5
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He is building a subfloor to be placed on the basement concrete is how i read it. I WOULD use pressure treated 2x4s for this since the wood is going to be in contact with concrete which has moisture in it. Whenever you frame a wall in the basement the bottom plate is always treated wood.
Thats what I thought too. I built it with PT, better safe then sorry. Thanks for the help guys!! You'll hear from me with another question soon...real soon.
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Old 12-06-2007, 04:34 PM   #6
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Subfloor


Hi, its me again...there's no harm with insulating the subfloor is there? The way I see it, is the subfloor is basically a wall on he ground. I ask this cause it's something I've never read about on this site nor in my DIY HomeBook.
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Old 12-06-2007, 05:39 PM   #7
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Subfloor


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Hi, its me again...there's no harm with insulating the subfloor is there? The way I see it, is the subfloor is basically a wall on he ground. I ask this cause it's something I've never read about on this site nor in my DIY HomeBook.
Rigid foam would be good
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Old 12-06-2007, 06:16 PM   #8
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Crown: Sideways...










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