Subfloor and joists : General Hardwood Flooring

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Subfloor and joists

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tjcuff

Post subject: Subfloor and joists

Posted: Sat Feb 16, 2019 3:34 pm

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Joined: Sat Feb 16, 2019 3:25 pm
Posts: 2

I have a particle board subfloor (estimate about 3/4") and I put 1/2" plywood over top of this in preparation for laying down 3/4" hardwood. I made a test block and the 2" cleats will not penetrate the subfloor to reach the joists underneath. Is this floor doomed?

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Pete A.

Post subject: Re: Subfloor and joists

Posted: Sat Feb 16, 2019 11:30 pm

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Joined: Tue Jun 16, 2015 12:02 am
Posts: 1754

No big problem. The fasteners will hold in half inch plywood. Use a recommended nailing schedule for fastening the plywood into the joists. 6" on the perimeter and 8 inch on the field.

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tjcuff

Post subject: Re: Subfloor and joists

Posted: Sun Feb 17, 2019 4:17 am

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Joined: Sat Feb 16, 2019 3:25 pm
Posts: 2

Thanks for the feedback.

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JIMMIEM

Post subject: Re: Subfloor and joists

Posted: Sun Feb 17, 2019 7:46 am

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Joined: Sat Oct 19, 2013 3:05 pm
Posts: 675

Are you sure it is Particle Board and not OSB? Particle Board is not considered an acceptable subfloor for hardwood flooring. 3/4" OSB is acceptable. 5/8" Plywood is acceptable. If it really is Particle Board then you'd be better off adding at least 5/8" Plywood.

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