Eco Insulation

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Insulation helps to maintain house temperature and lower the heat...

- Florence from pre fab homes

Eco Insulation

21 February 2011

To change the temperature of an object, energy is required in the form of heat to increase temperature (e.g. by using heaters), or reduce temperature (e.g. by using air conditioners). Once the heat generation or heat extraction stops, a reverse flow of heat happens and the temperature returns to ambient. To maintain a given temperature considerable continuous energy is required. Insulation reduces this energy loss.

Heat moves though a wall or inside the roof space by any of the following means:

Radiation – caused by direct incoming infrared radiation
Convection – caused by the movement of air currents
Conduction – caused by heart moving by touch from one material to the next

The movement of heat in, say, a roof-space is achieved by all three means but mainly by convection and conduction.

Certain insulating materials act as radiant barriers, convective barriers and conductive barriers. However, certain very commonly used materials such as foil insulation contribute almost exclusively to the control of radiation only, by reflecting heat. The purpose of Eco-Insulation is to trap a dormant layer of air inside a stable fibrous insulation layer. This effectively stops convection and conduction by means of the entrapment of a large volume of air, a poor conductor of heat.

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Florence from pre fab homes says :
Insulation helps to maintain house temperature and lower the heating and cooling bills hence its an alternative way to save energy and promotes green profile. For an existing home, adding insulation to finished walls is much more difficult. The thicker the insulation, the more energy efficient the home is, thus it will reduce the amount of heat that flows through your roof to the cold outside air.

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