What is the name of the fabric- or cardboard-like lining that covers the inner roof panel of a vehicle?

The fabric- or cardboard-like lining that covers the inner roof panel of a vehicle is called a headliner. This material serves both aesthetic and functional purposes. It enhances the interior appearance of the vehicle by providing a finished look to the roof area and can be produced in various colors and textures to match the vehicle’s interior design. Additionally, the headliner helps absorb sound, contributing to a quieter cabin environment and providing some insulation against temperature changes.

The other terms listed refer to different components within vehicle construction and insulation. Scalp molding is typically the trim that covers the edges where the headliner meets the vehicle's frame, while an insulator pad is designed to improve thermal and acoustic insulation. A vibration damper is used to reduce noise and vibrations caused by road surfaces or engine operation, but it does not serve the same purpose as a headliner. Each of these components plays a specific role, but the headliner is uniquely identified as the lining of the inner roof panel.