I would assume that solid wood PT boards would be stronger and last longer but I'm getting conflicting evidence online as a lot of people recommend plywood. Crack Filler Epoxy for Truck or Trailer Laminated Flooring - Key Polymer ; Sold by.Seal the bottom, and cover the floor with cheap peel and stick vinyl floor tile. If a square is damaged it's easier to replace than a vinyl sheet. We're stumped about putting a new board in. There is a metal lip on both ends (front and back) with very little wiggle room. I'm looking to repair some soft spots in my floor. It is not water damage, but where the foam has compressed in heavy use areas. Not fun, not horrible. I just recently bought a slightly used 7 x 14 cargo trailer that has nothing in it.