[skip0358]

If you go up in the garage attic you'll notice that where the sheetrock boards meet in the middle of the ceiling there is no rafter at the seam so it's an unsupported seam probably 22 feet long.. Besides that where they meet is also where the opening for the stairs is. add to that people sometimes put way to much stuff in the attic adding extra weight to an unsupported seam that is only taped. So all this considered the seam will crack. As another poster stated I doubt it will come down that easy. I've done many a renovation and it requires quite an effort.As for having it fixed the sem should be supported first then retaped and repainted. Unless it's sagging or actually coming down I wouldn't be to concerned.