Most people in the UK live in an old house built before the age of modern building regulations and energy-efficiency standards, and one in four UK residents lives in a house that is at least a century old. However, it is possible to upgrade existing housing stock and to live in these old houses in an energy-efficient and environmentally sustainable way. In an age of relentlessly rising energy costs, global warming, and climate change, it pays to put an old house in order. This invaluable book is packed full of useful information and tips to improve the energy efficiency of an old house particularly now, in the age of Home Information Packs and Energy Performance Certificates.