So I have a two garage that's half below grade on my split level. it has the original cedar door and has insulation behind the drywall (whatever the builder put in back in '78 I assume if it is like the walls it has R-12 in the walls IDK about cieling) either way ripping out drywall and replacing the door is on the list for the future however what tips, products, tricks are you guys using that I can steal to bandaid my cold garage. I don't give a shit about working in the garage I gave a torpedo heater I use if I need to do shit but my bedrooms above have cold floors and would like to help that a little bit. Thanks