The Weatherproof Thermal Transfer (TW) material is a very durable, water resistant material and should not be negatively affected by UV exposure over an extended period of time, however we have not tested multiple years of sunlight exposure. We do suggest using a durable wax-resin ribbon rated for outdoor use which can help minimize fading. We offer a variety of ribbons which includes the Durable Wax Resin (ZC) at the link below. https://www.onlinelabels.com/thermal-ribbons.htm If you'd like to try samples of our weatherproof material to test with your outdoor application, please visit the link below. https://www.onlinelabels.com/samples