Karen has worked for more than 20 years in the energy efficiency and sustainability sector. At Which?, Karen cuts through the jargon to uncover the environmental issues that matter most to consumers ...

Is it possible that painting the roofs of buildings could reduce your air conditioning bill and also cool the planet?? I calculate that by painting your roof white, you could reflect 50 percent of the ...

If you're embarking on a home renovation, it's likely you're going to need to know how to insulate your house – particularly if you are dealing with an older property. While modern or new build ...

We'll help you work out what type of roof or loft insulation to go for, how much it will cost, if you can get it for free, and how much you could save on your energy bills. Insulating different areas ...