ᐅ Reinforcing or doubling up an OSB wall

Hello,

Can I reinforce/double a 15 mm (5/8 inch) OSB wall (timber stud wall) with a 12 mm (1/2 inch) OSB panel, or will there be problems if I screw/nail OSB directly onto OSB without a wooden substructure?

Best regards,
Jens

You can do that. It should be possible without any issues.

Be careful with vapor tightness on exterior walls. This means gluing joints, sealing them with tape, or fully adhering the panel.