If you already have block walls I would just build a full frame wall on the inside of your block wall. Have them pre built on the floor, jack the roof, stand your walls up.
Hello from north central NC.
I am about to embark journey to restore a former woodworking shop to a new woodworking shop and will need all the advice and direction I can get to make it happen. I don't have the time/money/ or necessary experience to accomplish this , but I have a vision...