OSB (Oriented Strand Board)

Isn't there some writing on one surface stating which side out?

Renata

The printing goes to the inside--especially when used as roof sheathing--so inspector can read what was used.

-Doug

Ours said which side went UP but not which went OUT.

As noted by someone else. its not waterproof in the least and will fall apart really fast if it gets wet so cover it immediately. For exterior walls it won't matter which side is out. If you use it for interior walls and plan to paint it as I did then I'd use the smoother side (the one with the writing) as the surface to paint. It DEFINATELY needs a sealer though but looks great once sealed and painted bright white - for a shop. FWIW, corrugated galvanized metal sheets are like $5 ea at HD for a 2x8 piece. I used this for my roof, 30# tar paper under that &

BTW, if used as the deck> I am building a small 8' x 10' shed with OSB wood panel on the sides.

What is waterproof, and superficially looks like OSB, is Aspenite.

Kim

Oops, sorry. I just recently came across _something_ that had written on it which side out. Obviously not OSB.

sheathing--so

Don'r recall the printing as to which side goes "up" or "out", but the last OSB I used for roof sheathing, we put the side with the LINES on it "up". The lines are there to mark both 16" and 24" centers so you have guides for nailing it down. My .02 Nahmie