OSB upside down

[SFK]

Just laid new floor using OSB sheets.
Had 6 sheets of OSB delivered.
Cut to size and Screwed them all down.

On very last sheet, I turned it over (did not do this to any of the others as I took off pile) and for first time saw writing saying "THIS SIDE UP"!

So all my sheets are upside down.

Any issues I should now expect, or any remedies?

Thanks, SFK

 

[Notch7]

It doesnt matter.

1 side is smooth, 1 is rough. If its OSB3 maybe the waterproofing is on one side only -I dont think so

 

[endecotp]

Is it T&G? The profile is not sumetrical, so you can’t mix orientations. I doubt that having them all upside down will matter much though.

 

[SFK]

Notch,
Thank you. Yes it is OSB3.With waterproofing on one side. Bit (more than) annoying as I wanted the waterproof side uppermost.

Endercotp,
It is actually 1.2x2.4m sheets without T&G.
I put them down on concrete floor ontop of 25mm sheets of kingspan, screwed into wood battons to hold all edges level.
All to slightly improve cold from dry concrete floor of garage that is occasionally used as workshop.

Thanks to all, SFK.