I've been able to source OC703 locally and I'm getting ready to do another room treatment build. When I built my Roxul panels the white wood for the frames was the biggest expense, and since the OC703 is rigid I'd like to build these without frames. My question is - how do you secure the cloth covering to the panels? And how do you hang them? I'm assuming staples aren't going to work. Maybe some kind of glue?