It's uncomfortable between the cold air blowing through the built in cabinet that violated the firewall to the garage, not that there was one before. The ceiling is cold with only 2x4's between the roof (surprised no sign of moisture problems yet). The floor is laminate tiles on top of a slab. Between all of that, I just don't use the room as it's just me and I can go to the rest of the house that didn't get jacked up. My plan now is a permitted remodel that will also involve a full gut of the garage to create a better shop space for my electrical supplies. I'll lose the built in and go to a wall mounted TV on what will be the new fire wall. For the heat issue (one vent from the house system) I may supplement with a heated floor.
Few more answers- this is in kansas city in a suburb called Leawood Kansas. Basically right in the middle geographically.
I wondered about leaving the old ceiling up above to keep the house warmer during construction but pretty sure ripping it all out is a better option. My mouth dropped when I asked family I bought the house from about the original "contractor" that did the work. $2,500 to vault a ceiling, drywall the whole room, construct a built in out of particle board, build a "sooto firewall in the garage", and install a sliding door to the back yard instead of a 30" exterior door. She laughed about how the other two bids were near $15,000 and how they talked about having to frame the ceiling down. I just think it would be a good idea to fix the space while working on what I really care about, the garage. I'll also gain back 2 feet from the monstrous built in from back when TV's were not flat.
Up in the attic all that is left is a little dead space between the high part of the ceiling and the roof ridge (about a 3 feet tall dead space). The top flat area of the ceiling is framed with 2x4's which are probably the only thing keeping the roof from spreading apart. Although that's how the roof would of been supported before, would of been a couple of feet down though and only 2 or 3 of them. The original ceiling was joists hung at 8 feet off the floor spanning the short length of the room.
I think I'm best off at best just having a 10 feet tall ceiling (1.5 ft lower), and a 2 feet deep soffit on the window and door ends of the room (where the roof is too low for 10 feet).
Really appreciate the help. Thanks