Garage as smooth wall (steel sheet) or timber frame construction

.....

The term wood breathes comes from the fact that wood can absorb moisture and also release it again.

The problem then is that the "wood moves," and too much or too little moisture is not good for the wood. I wouldn't know where this property is important for a garage, since the process is very slow anyway. Apart from that, breathing is rather something that relates to air exchange, not to moisture.

from on the road