This reference guide brings together a wide range of essential data on the effect of weather and UV light exposure on plastics and elastomers, enabling engineers to make optimal material choices and design decisions. The data is supported by explanations of how to make use of the data in real world engineering contexts. Outdoor usage, in both normal and extreme environments, has a variety of effects on the different plastics and elastomers suitable for outdoor applications - such as discoloring and brittleness. The data tables in this book enable engineers and scientists to select the right materials for a given product or application, across a wide range of sectors including construction, packaging, signage, consumer (e.g. toys, outdoor furniture), automotive & aerospace, defense, etc. The third edition includes new text chapters that provide the underpinning knowledge required to make best use of the data. Larry McKeen has also added detailed descriptions of the effect of weathering on the most common polymer classes such as polyolefins, polyamides, polyesters, elastomers, fluoropolymers, biodegradable plastics, etc. - and explanations of the effect of weather on the polymers being treated - making this book an invaluable design guide as well as an industry standard data source. Data has been updated throughout, with 25% new data. The resulting Handbook is an essential reference for Plastics Engineers, Materials Scientists and Chemists working in contexts where outdoor use is envisaged. Essential data and practical guidance for engineers and scientists working with plastics in applications and produts for outdoor usage. . New edition includes new introductory chapters on weathering processes and the effect of light and heat on plastics, providing the underpinning knowledge required to utilize the data. . Major revision: 25% new data.