The floor of the van is made of black engineered oak plywood. Yep, we have a hardwood floor... The material was leftover from a previous Square Peg job, and happened to be just enough (we had one extra board when it was done) to cover our tiny space. A subfloor, made of plywood, was already fixed to the metal floor of the van, so we installed the floor boards right on top with adhesive and nails.
The subfloor was fixed to the metal floor with a series of tie downs, which we wanted to be able to access through the black floorboards. To achieve this, we clamped together the boards that would go over the tie downs, drilled an appropriately sized hole, and then added a rabbet around the hole. Later, we made some pucks to match the shape of the rabbet and cover the tie downs.
David went the extra mile and crafted us a simple (looking) kick board for the footwell of the sliding door. The boards were fastened to the van from behind the boards by pre-drilling holes through the metal wall of the footwell and adding fasteners from the underbelly of the van. The last step of the floor build was to add a finish/patina to the oak trim and pucks that turned them gray.