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Old 10-14-2010, 11:32 PM   #1
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mobile home subfloor


I am installing slate flooring on areas of my home. The joists are 2x10 with 16" centers. Existing subfloor is 5/8 OSB. I will add 3/4" plywood. Will this be sufficient? Thnx

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Old 10-15-2010, 12:08 AM   #2
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That should be more than suffient except you will still need to lay down some hardi board in order for the put to adhere properly.

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Old 10-15-2010, 12:35 PM   #3
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Calculate your deflection first courtesy of the John Bridge forum: http://www.johnbridge.com/vbulletin/deflecto.pl. And see if the slate tile manufacturer has any further requirements. Good luck!
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Old 10-15-2010, 01:04 PM   #4
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I am installing slate flooring on areas of my home. The joists are 2x10 with 16" centers. Existing subfloor is 5/8 OSB. I will add 3/4" plywood. Will this be sufficient? Thnx
Slate(stone) requires a more dimensionally stable substrate then ceramic tile. I don't know how you would calculate the bounce rate going down the road.
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Old 10-18-2010, 12:14 PM   #5
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Originally Posted by mrbig View Post
I am installing slate flooring on areas of my home. The joists are 2x10 with 16" centers. Existing subfloor is 5/8 OSB. I will add 3/4" plywood. Will this be sufficient? Thnx
Hey mrbig, my name is George and I work for a Chicago area Home Depot. In my opinion you are going to big with that CDX. I would recommend staggering 5/8 Durock cement board with some construction adhesive right over 5/8 OSB, unless there is damage on your existing subfloor. I think 5/8 cement board would be an ideal subfloor for the slate tiles, but plywood is just too much. Hope that helps.

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Old 10-18-2010, 02:30 PM   #6
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Originally Posted by SteelToes View Post
Hey mrbig, my name is George and I work for a Chicago area Home Depot. In my opinion you are going to big with that CDX. I would recommend staggering 5/8 Durock cement board with some construction adhesive right over 5/8 OSB, unless there is damage on your existing subfloor. I think 5/8 cement board would be an ideal subfloor for the slate tiles, but plywood is just too much. Hope that helps.

Im a Home Depot Store Associate, trained and authorized to help people on the Internet

What do you say we do a little clicking before we sand, or paint, or saw. Get the answers youre looking for at http://community.homedepot.com
That sure explains the advice given.
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Old 10-18-2010, 08:52 PM   #7
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Originally Posted by SteelToes View Post
Hey mrbig, my name is George and I work for a Chicago area Home Depot. In my opinion you are going to big with that CDX. I would recommend staggering 5/8 Durock cement board with some construction adhesive right over 5/8 OSB, unless there is damage on your existing subfloor. I think 5/8 cement board would be an ideal subfloor for the slate tiles, but plywood is just too much. Hope that helps.

Im a Home Depot Store Associate, trained and authorized to help people on the Internet

What do you say we do a little clicking before we sand, or paint, or saw. Get the answers youre looking for at http://community.homedepot.com
This has got to be a joke right?
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Old 10-18-2010, 10:03 PM   #8
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Old 10-21-2010, 12:19 AM   #9
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Follow the advice given about the JohnBridge forum and you can't go wrong. I live in a newer mobile home and got lots of info and helf from the forum. Simply go to the forum and see what your deflection rating is to be safe.

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