i got some ideas. When i build my shop i plan on building a wash bay. I don't know what demisions i want it but i plan on having it a seperate bay from the rest of the shop. Big door going in, and one going out. 2 floor drains. Have a big hot water power washer in there. Have heat. Have the cinderblock walls tiled.
When i build a shop i will defintly have a heated wash bay.