FRP pebble board has been applied to the wall between the bathroom and kegerator. Plumbing is finished there with a drain for the sink and water supplies. Reflectix is in place for the front wall of the bar. Most parts of the bar have, going from outside in, 1/2" plywood, two sheets of 1 3/8" Dow Super Tuff-R (R-value of 9 for one sheet), one layer of Reflectix and finished with FRP pebble board. Oh, and a LOT of Great Stuff.