5/8" or 3/4"?

[Bangon61]

Good day everyone. I am wondering if there is a big difference between using 5/8ths T and G plywood versus 3/4 " T and G plywood on my mezzanine floor. My joists are 2 by 8 on 12 inch centers. Thank you

 

[Firebrick43]

Yes, Huge difference. I would say 3/4 is enough if your actually storing things

I put 5/8 on roofs not floors. Normally lay two layers of 3/4 down for floors in opposite directions, but that would be overkill for a mezz

 

[bluedog225]

100% 3/4. Buy once; cry once.

 

[billconner]

While I to would prefer 3/4, if this is primarily a storage loft, no work area etc., 5/8 on joists 12" on center would be more than adequate.

 

[u2slow]

5/8 would be enough for me on a mezz with only 12" joist spacing. Plywood is expensive.

If you end up with particular point loads (shelving legs, etc) you can put other scraps of wood down first.

 

[Bangon61]

Thanks for the info. 3 quarter is 7 bucks more a sheet. Need 16 sheets. Going to go with 3 quarter . Cheers