We got lucky with 3 sides of the house. The siding was in remarkable shape and easy to refinish. The east side of the house?...not so much. The siding was in poor condition over here. Very brittle, split, and weathered. So we decided go down to the sheathing and hang all new siding as high as the window tops. The good news is that the siding is in much better condition further up the wall. That area can be refinished like the rest of the house. I finally got a good look at our sheathing. Solid wood tongue and groove panels. (most likely pine) You don't see that in new construction! Looks kinda pretty...like a blank canvas.