Book excerpt: Ecological refurbishment to Passivhaus standard requires know-how and experience. For this reason, the book has been produced as a design tool which systematically covers existing solutions. Examples relating to building physics, construction and ecology issues are presented in the same successful manner as in the Passivhaus Building Component Catalog also published by IBO/IBN (Institute for Building Biology and Ecology) using standard cross-sections and connection details in four-color scale drawings, as well as numerous tables.They have been organized by type and period of building and can easily be used to derive individual solutions. The book is a must-have reference manual for designers and building owners who want to refurbish properties to a sustainable standard.