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Thread "Spacing and supporting sub floor panels" started by DP68 on 04/24/2006 2:46am

Top : Tools, Equipment & Hardware : Spacing and supporting sub floor panels

Posted by
DP68
on 04/24/2006 2:46am
Spacing and supporting sub floor panels

Hello everyone,

couple of basic questions. I’m laying down 3/4" t&g osb subfloor. i'm leaving a gap of about 1/8" between the ends of the panels. For the edges, do I fit the tongue and groove tightly together, or leave a 1/8" gap there as well?

Also, I haven't been able to exactly line up the edges of each panel so they meet in the middle of the 1.5" wide joists. Out of curiosity, what's the minimum support for joist edges that folks out there would feel comfortable with? 3/8"? 1/4"?

DP68

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Posted by
Dornent Bernard
on 04/24/2006 2:46am
Re: Spacing and supporting sub floor panels

Are you placing the panels in the correct orientation? The t&g edges should be perpendicular to the way the joists run. If your panels are spaced for sizing (some are, some are not), you will have flexibility to adjust your spacing and get at least 1/2" on the joist. I also admit that I'm now recognizing yet _another_ advantage to using I-joists. Typically, they are 1 3/4" wide, giving you more nailing/screwing area.

You need to read the manufacturer's installation instructions for gapping instructions. It should be obvious, though.

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