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existing housing stock

Energy retrofit of the existing housing stock in England

by space and water heating. The high costs of energy are a national matter not only for their economic and environmental implications, but also because they contribute largely to a social problem, known as fuel poverty. The cost of heating the housing stock is rather high for different reasons, one of each being the heat loss through the building envelope. The thermal performance of existing buildings can be increased in two ways: by adding insulation to external fabric, and by reducing the unintended air leaks of the envelope.