How Insulation Works-Typical-St Louis Brick Home used in Examples

CAD Drawing-Insulation-St Louis Brick Home-Examples

How Insulation Works
Top View: Brick Home with Zero Insulation
Brick Home Wall Detail with Zero Insulation
Brick Home with Insulation in Wall Cavity


Why Insulate Your House?


Heating and cooling account for 50 to 70% of the energy used in the average American home. Inadequate insulation and air leakage are leading causes of energy waste in most homes. Insulation:

  • saves money and our nation’s limited energy resources
  • makes your house more comfortable by helping to maintain a uniform temperature throughout the house, and
  • makes walls, ceilings, and floors warmer in the winter and cooler in the summer.

The amount of energy you conserve will depend on several factors: your local climate; the size, shape, and construction of your house; the living habits of your family; the type and efficiency of the heating and cooling systems; and the fuel you use.

Once the energy savings have paid for the installation cost, energy conserved is money saved -saving energy will be even more important as utility rates go up.

This fact sheet will help you to understand how insulation works, what different types of insulation are available, and how much insulation makes sense for your climate. There are many other things you can do to conserve energy in your home as well. The Department of Energy offers many web sites(http://ornl.gov/sci/roofs+walls/insulation/ins_07.html) to help you save energy by sealing air leaks, selecting more energy-efficient appliances, etc.


How Insulation Works

How Insulation Works
  • Heat flows naturally from a warmer to a cooler space. In winter, the heat moves directly from all heated living spaces to the outdoors and to adjacent unheated attics, garages, and basements – wherever there is a difference in temperature.
  • During the summer, heat moves from outdoors to the house interior.
  • To maintain comfort, the heat lost in winter must be replaced by your heating system and the heat gained in summer must be removed by your air conditioner. Insulating ceilings, walls, and floors decreases the heating or cooling needed by providing an effective resistance to the flow of heat.
  • Reflective insulation or Radiant Barriers works by reducing the amount of energy that travels in the form of radiation. Some forms of reflective insulation also divide a space up into small regions to reduce air movement, or convection, but not to the same extent as batts, blankets, loose-fill, and foam.


Reference> http://ornl.gov/sci/roofs+walls/insulation/ins_01.html

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