Loft insulation is a blanket of insulation material that's laid down to create a barrier between the main body of the property and the loft. This helps to keep heat in.

Room in roof insulation is where insulation boarding is installed in between the rafters, underneath the existing plasterboard walls.

On average, households with loft insulation make a saving of around £175 a year on their energy bills. Those with room in roof insulation can save up to £250 per year.

An average sized home takes a few hours to complete, including clearing up afterwards. Larger properties can take a little longer to complete.

For room in roof properties, on average the process takes 2-3 days to complete.