I absolutely can't fathom how this water is getting into my potting shed. The outside is sound with no visible way water can get in. I have felt underneath the bench and can't feel any water of moisture. I know the putty in the glass is a bit poor (my bad) BUT from the inside there are no signs of it coming from that with runs or drips. It just seems to pool where you can see which defies logic and physics as the outside has a wooden overhang. I tell you, nearly all my diy issues are with water being where it shouldn't. It's exasperating.