This is my first post, hi everyone. My home was built in 1926 and its the first one I've owned so expect more questions than answers from me. I have a 10'x13' room with a ceiling sagging about 2" in the middle. The sheetrock is firmly attached but the joists are sagging visibly. Common sense tells me I need to run a beam perpendicularly to the joists between two load bearing walls and attach the joists to it with some fancy metal doohickeys or hang them from the rafters. Question I need answered is which option is better and how do I get the joists raised up where they need to be?