Insulation for the floor

LH mentioned to a friend that she was looking for insulation for the floor of the tiny house, and Voila! (I know there should be an accent mark over the "a" in voila, but I don't know how to put it there!) The friend had some leftover rigid foam from a previous construction project, so we drove over and checked it out. Turns out not only is there just about the right amount, but it's also Polyisocyanurate (polyiso), the highest quality, highest R-value, and most expensive type of rigid foam. Looks kinda rough at first:

but it machines very well and easily on the table saw:

So, it's currently being stored in the barn, along with the windows and door, (and way too many other things) as we await the delivery of the trailer. (Still unclear as to when that will be.)