View attachment 217363View attachment 217364View attachment 217365The standard overhead crappy door will always be the weak link in a shops insulation.
So when a friend and I built an addition onto my house last summer we insulated the swinging carriage doors with 3" thick R30 foil backed rigid foam insulation.
The MAIN thing you gained was better ability to control the EDGE sealing than paneled roll-ups allow and can still move.
I just replaced the seals on my 18-foot wide one last Sunday. Major improvement, but still..
Next-up is to frame the rebated opening outside of the door for removable stack-in insulated panels to turn it into an all-round edge-sealed air-gap. Too much damned rails, rollers, and moving "hardware" to seal those doors from the inside.
What with other doors to the area, and not a lot of large stuff in or out, I have the advantage of being able to go weeks at a time without need of opening the roll-up at all, so.. not a universal solution, but...
"Carriage" doors, preferably bi-fold, with removable vertical posts, could be
added to the outside to supplement the roll-up instead if I needed that.
What with BOTH door sets and the air-gap, they could be much lighter than your ones, and also allow for half - or less- being opened at a go.
Other than wintertime, the pushbutton-remote powered roll-up is more convenient "naked".
2CW ... well... probably closer to $200 - $500, but still...