Typical Heat Loss

• Attic insulation: Up to 40% of heat lost from a home is lost through the roof. Effective attic insulation can pay for itself within two to three years.
• Lagging jacket: A lagging jacket on the hot water cylinder will help retain hot water temperature and pay for itself within a few months.
• Double glazing: For a given area of wall or window, a window will allow up to eight times more heat to escape.
• Wall insulation: As much as one quarter of the heat lost from a house can be lost through the walls. Properly insulating walls can reduce this by two-thirds. Badly fitting windows and external doors can account for more than one-sixth of heat loss.
• Ground floor insulation: Heat loss through the ground depends on several factors, including floor type, whether the house is one or two-storey, the nature of the soil and terraced or detached construction.