Quote Originally Posted by Grant Aldridge View Post
That makes more sense John! It's handy having it open but I may add some ceiling in a couple areas. I've got some air gap sealing and insulating to do but the 4" foam board does a great job keeping the shop comfortable. I just use a window ac. I'm in South Georgia so it runs nearly all the time. When it dies I'll upgrade to a mini split
An industrial drop ceiling with smooth panels (that didn't hold dust) might be another option. I've installed a lot of that in challenging places and it was tedious but not rocket science.

JKJ