With more than 20 years' experience in energy efficiency and sustainability, Karen cuts through the jargon to explain environmental impacts and help you find greener options. Insulating a pitched roof ...

While adding loft insulation is certainly one way to improve your home's energy efficiency, making loft insulation mistakes can result in your hard work backfiring and leading to more problems than ...

From foil insulation to water tank jackets, an expert shares his five top tips to better insulate the loft and reduce heating bills. People can save more than £50 a year by making sure their loft is ...

Karen is an energy efficiency and sustainability specialist with 20+ years experience. At Which?, Karen cuts through the jargon to uncover the environmental issues that matter most to consumers and ...