DH was concerned about it being transparent since he wants to use it as a shed and store the lawn mower, etc. We are thinking of using insulating foam, cut to fit into the panels. I think that might help with insulating, too? Again, it would sit on the deck specifically built for the purpose of having a shed. We thought that this would kill two birds with one stone: Move the lawnmower and kayaks out of the shed in the fall and put the plants in instead. This is half or more of the prices of wood sheds we find around here that wouldn't even be suitable as a greenhouse.