Previously, certain energy-saving products were approved for a reduced VAT rate of 5%, but this has now been again reduced to 0% VAT for the next five years. Solar panels, heat pumps, and loft as well as cavity wall insulation are some of these energy-efficient devices that are significantly reduced to a 0% VAT in the UK .  The best way to reduce energy costs and maintain the warmest air in your home is plausible only with effective insulation as you already know. With labour included, the typical cost of blanket loft insulation for a detached home is somewhere around £600 .  The least expensive insulation per square foot is blanket insulation, which will cost you around £5. The next least expensive is loose-fill insulation, which can cost around £7.50, followed by sheet insulation, which comes to around £10, and spray foam insulation which is a bit on the higher side costs £55 per square foot due to its exceptional quality.   And the average labour cost for roof insulation is