I store most of mine on concrete. I poured over 6mil visqueen, this stopped moisture from coming up. point: stops water from goin' down too:) 16ft high is usually a height. Leave louvered vent in the closed gable also.
First post here, I have the JD-435 round baler & here in Fairbanks AK in the fall second cutting of Brome is hard to get dry. Wondering if anyone uses chemicals on this baler & what type/brand is best? Rancher