Energy savings from home insulation "vanishing" after four years

Adding insulation to UK homes only provides short-term energy savings that are cancelled out within a few years by an increase in energy use, according to a study by the University of Cambridge.
The study, which analysed the gas-use patterns of more than 55,000 homes across England and Wales, found that any fall in gas consumption achieved by retrofitting wall insulation was voided within four years.
Retrofitting lofts proved only half as effective, with any gains becoming "insignificant" after