3 Ways to Stop a Desk Mat From Curling on Glass

Use a non-slip pad A thin non-slip shelf liner or rug gripper underneath the mat adds friction and prevents curling. It costs under ten dollars, can be cut to size, and is reusable.

Try double-sided carpet tape This is a more permanent fix that holds the mat flat. It can leave sticky residue on glass, so only use it if you never plan to move the mat.

Avoid relying on the mat’s own grip Glass is too smooth for most rubber or cloth-backed mats to hold. Temperature and humidity changes will cause edges to curl without an added friction layer.