Ah yes...those ceilings aren't good for a sectional door that anything more than "normal" and right above your head. But the ceilings look pretty cool I think. That's an application that's a no-choice situation. As you said, the insulation would be the biggest concern for me...but that all depends on where you're located too. If 40 degrees is the coldest an area sees, then the insulated it a moot point. Yea that hand chain sure is a work-out. Lucky you have those detailer-forearms...you need 'em.