Revisions log for Answer #599

We have a garage like that too, measuring 5x6m. We store suitcases and camping gear in it, as well as lights for outdoor decor, etc. It works very well. It works very well.

It is not a drip cave as it is well ventilated. Occasionally a few drips collect on the ceiling, which also drip down when you put a wet car inside. This year we used them for other purposes and put all our boxes of stuff on one side and only the bikes on the other. There's nothing wet down there.

But actually to the question: I wouldn't use drywall. I'm not a construction expert, but I have a bad feeling about it. We once had a piece of drywall left in our garage. It didn't get moldy, but it completely sagged.

OSB would certainly do the trick. But I would probably use trapezoidal metal sheets. For me, that would be the best.