The underpinning is an apron that goes around the bottom of the perimeter of the structure to keep the underside of the house warm. It also looks much nicer and prevents guests from being able to count the dogs sleeping under the house.
After all we don’t want to appear like we’re rednecks, do we?.
The two sections that were left open will have access panels so we could use the bottom of the house like a mini-basement.
The kids did great helping me and making the job go a lot easier.