For those of you who don't know, Mark created the Off Grid series of trailers before moving on to starting up Mission Overland. That is why there are so many structural similarities. I'm sure Off Grid has continued to upgrade their models in the two or so years that Mark has not been associated with them. Overland Journal reviewed one of the Off Grid models. If I remember correctly, Scott Brady selected it as his favorite in the group. Scott commented about the uncovered sprayed on insulation under the trailer. My original trailer has the bottom covered with a synthetic lightweight honeycomb type material. Mark changed to the aluminum skin approach.
My flooring looks like a synthetic, non-wood material with a wood-like appearance. Similar to that used in home flooring. Well sealed. I've never had any issue with it warping, wearing, etc. For those of you with these issues, have you flooded the interior somehow? Too deep a water crossing? I don't think this trailer was designed to be a waterproof or a boat. I've never had it in more than a couple inches of water so really am not an expert on this issue.