I am thinking about ways to better insulate my shop, which is a 3-car garage. I have 5 windows, each double-pane, but no storms. I can feel a significant amount of cold air near the windows and am thinking about cutting some plexiglass to cover the windows, probably with some weather stripping around the edges to create a seal on the molding. My concern is that there might be a condensation buildup in there and I might get mold or otherwise damage the windows with moisture. I would probably attach the plexiglass with bolts that screw into t-nuts embedded in the molding so that I could take the plexiglass off in the warmer / moister months.
Thoughts on doing this?
Thanks.