Architects and environmental engineers should read this book. It gives new research-based information, that is quantitative rather than descriptive. Because architectural research in energy and environment has long suffered from the lack of definitive information, this book is a break through. The work of those two distinguished professors, who teach in Cambridge and affiliated with BRE and CAR, is really unique. The included LT method for British climate is useful only for British applications. Enjoy yourself reading this book.