 There are many problem areasthat typically affect the energy efficiency of homes.
The digram shows a number of major sources of heat loss.
1) Attic Hatches are often leaky and difficult to seal.
2) Ceiling Penetrations to the attic are a major source of heat loss.
3) Most Doors can benefit from weather stripping
4) Kitchen and Bath Exhausts must vend directly to the outdoors
5) Mail Slots - although rarely installed in new homes, are another major source of heat loss.
6) The Rim Joist (or Belt Line) isanother major source of heat loss.
7) Exterior Walls need to be properly sealed
8) Windows often are improperly sealed.
9) Old brick chimneys can be a huge source of heat loss.
 Some of the most costly air leakage occurs at the top of your home, but often goes unnoticed. Air leakage within most buildings, also known as "stack effect", draws cold air in from the gaps in the bottom of the building and sends it out through gaps at the top, as shown in the diagram. The specialists at Lambton Insulation can help you to solve these costly problems.
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