How much does external wall insulation cost?

The cost of external wall insulation can vary widely based on several factors including the size of the house, the type of insulation material used, and the specific requirements of the installation such as access issues or the need for additional finishes. For an average three-bedroom semi-detached house, costs usually start around £8,000 and can go up to £22,000 or more for larger or more complex projects. This price generally includes the materials, labor, and any necessary scaffolding. It’s also important to factor in potential savings from reduced energy bills and possible grants or government incentives available to offset some of the upfront costs. In the UK, homeowners may also need to consider additional costs for planning permissions if applicable. Investing in external wall insulation not only improves thermal comfort but can also enhance the property's exterior appearance and increase its market value, making it a cost-effective home improvement in the long term.