Reinforce/double up OSB wall

Hello,

can I reinforce/double a 15 mm OSB wall (timber stud wall) with a 12 mm OSB board, or are there problems if I screw/nail OSB directly onto OSB without a wooden substructure?

Best regards
Jens

You can do it. It should be possible without any problems.

With an exterior wall, be careful because of vapor tightness. That means glue joints, tape them or bond the entire surface of the board.