Quote:
Originally Posted by LittleBlackDuck
How about putting a layer of plastic film over the floor to protect it, then place a plywood false floor and fill the space between them with expanding foam.
Simon
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That was going to be my recommendation, or something similar: plastic film on the floor and maybe up a temporary bulkhead, foam on the plastic. It sets to a perfect mold of the floor. If you want to completely cover the entire area, consider doing it in sections. That will make it easier to remove in the future if your want to return the vehicle to its factory state.
Before it sets, you could consider bedding a piece of lumber in it (fixed in place with clamps if necessary to prevent movement while the foam sets) to provide a foundation for a lightweight plywood load floor, if you're so interested, to replace the seats.