Here are some photos of the ceiling with the horrible insulation problem and the nice wood behind it:
Ceiling again and the heater unit with 3 HUGE propane tanks that sit outside the shop:
There was an A/C system in the place and the unit is still outside but the inside blower unit was torn out and needs a new one. I may or may not do that this summer, we will see. If so then I cannot wait until winter to replace the insulation unfortunately.