The cost of cavity wall insulation is around £475 in a semi-detached house, although some energy providers will install it for free. With Eon and Npower, for example, anyone can apply as long as ...

Free home insulation: Too good to be true? Published. 10 July 2020. Share. close panel. Share page. Copy link. About sharing. Image source, Getty Images. By ... off with loft insulation, then wall ...