Coating exposed luan plywood with ??
The floor of my trailer consists of 2" of styrofoam compressed between a top layer and bottom layer of 3/16" luan plywood. The bottom layer of the floor was wrapped and glued with a tarp like material...
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Fiberglass resin cut with denatured alcohol to a very thin mixture. Apply to plywood with a paint brush. The mixture will soak into the wood and the alcohol will evaporate away. Re-apply 2nd and 3rd coats before the resin dries. Practice with some scrap wood to find the right mixture and dry times.
