So in the 3.5 years I have been living at my house, I tried a decking stain which didn't last at all, and then painted the whole thing with oil paint, and that didn't last much longer, so short of ripping the whole thing apart and using composite boards, is there any coating that I can apply that would pretty much enclose the whole thing in some soft of epoxy or something?
Any recommendations on what to do? I don't want to be painting the thing every 2 years.