How Thick Should Loft Insulation Be?
Even if you already have some loft insulation it is worth checking to see how much you have. Topping up your insulation from 50mm to 270mm – the recommended depth – could save another £60 a year on your heating bill and 300kg CO2. Loft insulation is easy to install – depending on the type of loft you have you can even do it yourself.