• More than 40% of all the heat lost in an average home is through the loft space and walls
• Up to 45% of heat is lost through uninsulated solid walls
• More heat is lost through walls than any other route – approximately 33% in an uninsulated home
• 270-300mm (10.5inches) of loft insulation can save up to 15% of a home’s heating costs
• Cavity wall insulation is one of the most cost-effective energy efficiency measures in the home. It can save around £120 each year on a typical home’s fuel bill.
• Up to 20% heat loss is through doors and windows.
• The drill hole used for cavity wall insulation is no bigger than a 10p piece
• Up to 20% of all heat loss in the home is through ventilation and draughts.

According to the Energy Saving Trust in an uninsulated home:

• Up to 20% heat loss through windows & doors
• Up to 25% heat loss through the loft/roof space
• Up to 33% heat loss through uninsulated walls
• Up to 45% heat loss through uninsulated solid walls