This book focuses on the major global waste management issues and development of thermal insulating materials by utilizing these wastes. It helps address various global issues like sustainable environment, waste to wealth, waste to resource material, advanced multifunctional material, skill development and employment generation. The book highlights the potentiality and the applicability of various wastes, such as municipal solid waste, agricultural waste, industrial waste, construction waste, textile waste, waste polystyrene, geopolymer, leather rubber waste, other miscellaneous waste to be considered as a resource and its availability and conversion technologies from waste to wealth as thermal insulating materials. It also discusses recent trends, for processing the waste to wealth as a thermally insulating material. This book is a useful guide to researchers and professionals working in the areas of energy storage, sustainable civil engineering, material science and others allied fields.