I have ceiling tile glued with 3m contact glue on a bi-fold door. It works great and is very flat. I put a handle on the end and hang it from the wall in my garage when not building. I am in the process of taking the second part of the bifold and adding a piece of glass to it. I will then hang it on my wall using strong hinges. When not in use, I will fold it UP against that wall leaving the glass facing in to avoid breakage.