The black areas in the second picture is how my deck looks in the spots where I can't see yellow. If I pressure washed it and got it to look like yours, do you think I'd need to sand it down to bare metal to put some rustoleum on it?My deck, before and after a pressure wash, the only reason I cleaned it was due to having to install a new belt.
It is 25 years old, I ain't painting it! That is the first time it has been cleaned in 10 years, or how long I have owned it.
I just keep it dry during storage.