Passivhaus Handbook : A Practical Guide to Constructing and Retrofitting Buildings for Ultra-Low Energy Performance by Adam Dadeby and Janet Cotterell (2012, Trade Paperback)
A superb discourse on Passivhaus for anyone interested
This book will appeal to anyone with an interest in Passivhaus requirements and construction, from architect, designer, structural engineer, builder to any interested amateur, green campaigner or even planning specialist. The book covers all aspects of Passivhaus design, construction and use and makes compelling arguments for the adoption of the Passivhaus standard for all new buildings of whatever type. Additionally the authors indicate how the current UK planning system militates against Passivhaus buildings.
The book is easy to read. As an amateur with an interest in Passivhaus I found the technical details described in a way that was easy to understand, although I must admit to skimming some sections that would be of great interest to architects and designers, even though I garnered a great amount of information from them.
To summarise: well written, easily readable and packed with useful information.