The publication, Thermal Insulation of Buildings for Energy Efficiency, outlines various important aspects related to building insulation materials, ranging from the principles of building science to the application of materials in buildings. It carries the specifications and testing standards of building insulation materials developed by the Bureau of Indian Standards and the prescriptive compliance requirements for using insulation in commercial buildings covered under the Energy Conservation Building Code (2007), Ministry of Power. It also addresses several important issues related to insulation materials and the salient initiatives undertaken by BEEP. It provides practice-oriented background information for building designers, architects, and various other stakeholders in the building construction industry.