So Ian has started working on the subfloor and undercarriage of our tiny house on wheels. Part of this process is determining where everything is placed in the house, particularly the items that need plumbing as they will penetrate the subfloor.
The plan is to insulate the floor with approx. 3″ of spray foam which we will do before we install the subfloor decking. We had the trailer manufacturer incorporate a few angle irons to form a ledge to support sheets of plywood therefore creating a cavity between the subfloor decking and the bottom of the metal joists.
A few pics for your amusement: