[QUOTE=BEETHOVENMIKEY;2018324]Personally, I would want to know what's going on and is it going to continue.
Most foundation issues, including settling or heaving concrete, derive from poor backfilling/compacting when the house was built. no/one can know definitivly the reason for failure dia grindinggenerally structural but cab be cosmeticci, it's not necessarilygoing to occur again...sometime.
Your Option #3 (and most expensive)(expensive') would be getting a conc repair contractors/pecialist to a care ofit properlygruound
However, personally, we have a close friend who had the same situation in Rio Ponderosa, I put a 60 tooth carbide blade on my 5-1/2" trim saw, took the screen door down, took the door sweep off the bottom, and trimmed a half inch off the bottom. Then, attached a new door sweep and adjusted it when door was installed.
Keep in mind... when the split becomes a hazard, you'll need to rent a small electric jack hammer (you're kidding right? - hammer drill & bushing tool !!!and remove the high side of the split, down a half inch or so and at least 6" out from the split, clean it out and use a polymer modified concrete patching material & finish!. Once cured, clean lanai more thing there's no paint that's resistant to wear from pedestrian traffic IF there were, we wouldn't have to repaint porches!!!!!!
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