The story is, my friend bought a house for the price of a used car, and of course it's a major fixer-upper. For god knows what reason the entire back side of the house (maybe 1960's?) was built about 3 inches below grade, so of course the floor in the back room was sagging horribly, the flooring supports and the sill plate were rotted to hell. We removed the floor because there was no other choice but are scratching our heads on what to do next.
My friend's idea was to 1) just find lumber with the highest degree of water-and-rot resistance, jack up the house a bit on the back end, and fit in a new sill plate with new joists, then handle the flooring from there. the idea is that it would be the easiest fix and last maybe 10 years? Then it's someone else's problem lol
But all wood below soil will eventually rot, so I was thinking 2) to just replace the bottom part of the wall with concrete. Maybe cut off the bottom 6-12 inches of wall in the back, and replace it with stacked cinderblocks, slap a treated sill on it, and we'd never worry about it again. (Only question I have is how do I fasten the wood floor beams into the concrete, but I can figure that out).
So, which idea is better? Or, are neither of them very good? We are pretty handy people but not experts in the field of carpentry nor masonry, so if you say "you're better off paying a professional for the fix" or "you're better off demolishing this POS house and making a fresh one", fair enough. #diy source