5. Holes: Holes will be the most obvious reason to get the drywall fixed. This could be from furniture knocking into the wall, too much pressure from something, kids hitting their toys against it too hard, and much more. If the section isn’t braced up against a stud, there’s a chance it can get damaged. While yes, not great to look at, it’s also a structural issue. If you catch it soon enough, you might be able to have it patched and repaired. If you let it go, cracks can form, forcing you to replace the entire sheet.