It can also help reduce your carbon footprint by 0.7 tonnes per year.  Insulating your loft is a good idea overall, as it ...

Spray foam insulation can be used across the home – for example, in the roof, loft, cavity walls and floors ... RICS has published a guide to spray foam insulation with advice for consumers.

This is because it contains trapped air which cannot transfer energy by moving. Loft insulation A thick layer of material with a low thermal conductivity reduces the rate of heat transfer from the ...