Home / Campaigns / The Big Loft Insulation Drive / Costs and savings Costs and savings If you live in one of the eight million homes in the UK that does not have adequate loft insulation, you can quickly and easily save hundreds of pounds on this year’s energy bills. In just one weekend, you could do the work yourself at a cost of £680 for a typical semi-detached house – and you could reduce heat wasted by 25 per cent meaning your home is cosier throughout the winter. Loft insulation can last for up to forty years when fitted correctly, so the savings on energy bills continue for decades. It will also improve your Energy Performance Certificate (EPC) rating and therefore improve the value of your home. Find out more about the costs and savings that apply to your house type and current insulation level with our quick questionnaire. How much could you save? Answer two quick questions about your property for tailored insulation advice. What type of property do you live in? Detached house Semi-detached or end of terrace house Mid-terrace house Detached bungalow Do you have any existing loft insulation? There is currently no loft insulation in my property. There is some loft insulation in my property. The depth is around 120mm. I have about 270mm of loft insulation. Not sure. Congratulations you have the recommended depth of loft insulation Take a look at our guide for saving money and energy for more ways to improve your home and cut energy bills. See your tailored recommendations If you want to find out more about other energy saving measures in the home, watch our video and download One Home’s guide for easy money saving tips for all budgets. This information is based on independent research by Energy Saving Trust. Estimates are based on insulating a gas-heated home, and UK fuel prices in July 2023. The recommended depth of mineral wool insulation is 270mm, but other materials need different depths. The estimated costs for professional installation are unsubsidised and prices will vary. Some people are eligible for government support schemes to help with energy bills and home energy efficiency improvements. Loft insulation typically lasts for 40 years. This means it should pay for itself many times over in that lifetime. If you rent your home, you will need to discuss installing loft insulation with your landlord. Find out more about loft insulation. ⇦ The Big Loft Insulation Drive DIY or professional installer ⇨ Join the conversation #KeepTheHeat Get involved In partnership with: Disclaimer This information is provided for guidance only. Please see the full disclaimer in our terms and conditions. DIY cost estimates include VAT. Professional installer estimates exclude VAT as this is not applied to insulation services.