A steam hood will be effective enough in a sugar hut to remove steam and prevent moisture buildup. In any case, with it, you will have much less moisture in the room than without it. In a sugar bowl, it is better to install a steam hood as low as possible above the evaporator in which the juice is boiled. And if the cap is also equipped with a powerful fan, then dryness and the absence of mold in your shed are guaranteed to you.