Measured the bad area, cut out a piece of plywood, outlined the piece of plywood onto the floor.
Tried my best using a circular saw and jigsaw to cut out the bad area. Wasn't easy in some of the tight spots and corners.
I was able to remove all of the bad wood except a small spot under the sink compartment.
Removed the insulation, cleaned up all the dust and excess wood.
Cut out some triangles out of plywood and mounted them in the corners for extra support.
Replaced insulation and mounted the new piece of plywood into the metal framing and the wooden triangles.
Applied silicon to the edges. Laid down plastic floor insulation (blue stuff).
Had some extra wood flooring from a bedroom job that I laid down next. Applied a little bit of glue on the between each piece of flooring and nailed them on the edges.
Cut out the area for the toilet. Trimmed down the metal floor boarder and mounted at the edge of the flooring. I will put trimming around the edges next.
So far so good. I know it will get damaged over time on my desert trips but I have enough extra flooring to replace it twice.
