Hello all. I have been recently trying to update my home, built in 1950, and am running into some snags with the painting process. Our walls are sheetrock and have been patched and painted many times over the years. My biggest problem room is the dining room where they once had a bumper that ran around the room. Once removed, the patching was done poorly and it is very obvious that there is a large patch around the entire room.
I have tried evening it out, sanding, priming, etc., but the results are still poor (see enclosed image). No matter what you still see the difference in sheen and texture. My question is, how can I hope to repair this? Do I spackle over the entire wall? Sand the entire room down to a more even surface? Any advice would be appreciated. Thanks!