Can chair mats be exposed to direct sunlight?
Whether chair mats can be exposed to direct sunlight depends on the plastic compound that they are made from. Clear polycarbonate chair mats are the most suitable chair mats for direct sunlight.
Black polycarbonate chair mats and polypropylene chair mats can be used in direct sunlight but will fade over time if exposed for many hours per day.
We do not recommend the use of PVC chair mats since they contain phthalate plasticizers. These outgas from PVC when the mat is exposed to sunlight and heat raising risks that include asthma, allergies and cancer.