Revisions log for Answer #600

We have a 9-foot double steel garage, too.....

Bikes, kids toys/cars, gardening tools, some tools/workbench – and lo and behold, the backside is full.

I reinforced part of the garage wall with OSB boards to hang my garden tools there. Since my garage has no slab but asphalt, the moisture originally came in mostly from below, and when it rained hard, the moisture on the sides would sometimes penetrate up to 10 cm between the asphalt and the garage. So I separated the OSB panels from the sidewalk at the bottom. This has worked for several years without any problems. But I wouldn't use drywall either.