Water damage under bedroom slide

I had to replace the bedroom slide floor due to water damage. It was caused by improper caulking of the seam on the outside of the slide. Water got behind the caulking, ran down the side and soaked into the board. No way to really tell because the board had a waterproof cover so you couldn't see any damage.

Replacing the wood wasn't too bad. Just opened the slide, got the bed frame out of the way, removed the rotten wood, measured what I needed to replace, and then put it all back together. Someone who was a good woodworker could probably done it in half the time it took me, but got it done for about the price of a sheet of plywood.