seth8530
The Atomic Wine Maker
Sammyk, here are some thoughts based on what we did. Good that you are planning on drainage around the base. You should also think about how the roof will drain. Our roof is slightly sloped with a rain gutter attached. The roof was made from plywood covered with a waterproof membrane. You could then put your corrogated metal over that. A cement roof would be expensive and for safety, you would want that to be designed by an engineer.
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Did someone ask for an engineer? lol