I just recently decided I wanted to convert my screened in porch into something more useful year round. See a photo here: https://goo.gl/photos/g9HL75nfa2iakiKX9
I plan on making this space into an enclosed porch with knee walls, a small wood burning stove and crank out windows all around. Also want to add a sliding door to the house instead of the standard door.
As you will see from this photo, the original slab (16x12) has settled in the middle of the floor. The edges of the patio have a block foundation and all appear to be level. The question is, do I:
1. Remove the pad and have a concrete contractor pour a new pad. If I go this route, will it just do the same thing? Cost is ~$1800
2. Frame a 2x6 floor over this sunken pad, secured to a ledger board on my house and with framing on the other three walls. Add footings as needed or 2x8 or 2x10 if necessary. Cost would be materials only, have family that could help with labor.
What do you think?