I built a 10 X 15 shed from scratch about 30 years ago. I used pressure treated lumber for the floor, and it has held up very well. I just replaced the roof and amazingly had no rot under the shingles at all. I do have a problem along both sides of the shed where the rain hit the ground and splashed up into the tongue and groove siding panels. They are rotted about 1.5 feet from the ground up the sides. I was thinking about just tearing out the wood siding and replacing it, (30 years from now it wont be MY problem lol) I built the decorative doors myself, and it they are fine too, but If I were to do this in aluminum, doing those doors would be above my pay grade from the look of it. Any better Ideas to look at to make things look better out there?

 

Look into prefinished LP lap or panel siding. Diamondkote is one prefinished company with a 30 yr warranty. Blind nailing the siding means no exposed fasteners. They even have corner posts with a nailing fin so that they are blind nailed too.

 

And regardless of what is done, some gutters would eliminate the water issue so that guy 30 years from now wont have to fix again!

 

Cut what you have off at whatever height you need to remove the rotted areas, slip a Z channel behind it and come up to that point with PVC or treated tongue and groove?