Why Headliner Material Matters in Automobiles You’ve probably never thought much about the headliner material lining the roof of your car’s interior. But believe me, after years in the industrial equipment sector, I’ve seen how crucial this “invisible” part is — not just from an aesthetic standpoint, but safety, comfort, and durability too. Oddly enough, automotive headliners can make or break the cabin experience. When a vehicle owner complains about odd smells, sagging fabric, or rattling noises, chances are—headliner material had a part in the drama. The good stuff? It sits tight, absorbs s…