Why Your Headliner Falls Down (and What NOT To Do!) If your car’s headliner is sagging, this quick Atomic Autoworks Garage video explains exactly why it happens, what causes it, and how to fix it the right way. Most people reach for a can of spray adhesive… ❌ Don’t. It doesn’t work, makes a mess, and ruins the board underneath. It’s one of the most common mistakes we see. Here’s what you’ll learn in this short video: • Why headliners fall down in the first place • What happens inside the foam ba