The Handbook of Sustainable Refurbishment

Book excerpt: The refurbishment of existing buildings is a neglected subject within sustainable architecture; attention is usually focused on new buildings. Old buildings can use large amounts of energy and provide poor internal conditions for occupants. They may have high heating demand, poor lighting, poor ventilation, solar penetration and glare, and poor control of heating and cooling. Demolition is an option but the alternative of refurbishment is starting to be seen as more sustainable in terms of architectural value, materials use, neighborhood disruption and waste disposal. Building new is more carbon intensive and carries many wider environmental impacts. In addition, the potential impact of low energy refurbishment is much greater than that for new build since there are many more existing buildings than will be built in the next 10 - 20 years, the period over which many CO2 emission targets apply.