Learn It: House Insulation

• Attic insulation:
  Up to 20% 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 keep water hotter for longer 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.
• Draught excluders:
  Badly fitting windows and external doors can account for more than one-sixth of heat loss.
• Ground floor insulation:
  Heat loss to the ground depends on several factors, including floor type, whether house is one or two-storey, nature of soil and terraced or detached construction.

Next: Learn It -Conduction

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