to the U.S. Department of Energy, Energy Efficiency and Renewable
Energy, proper heat flow will reduce the costs of heating and cooling
a house or building. When properly insulated, there will be less need
to increase the AC or heater. Instead, Energy efficient insulation
will provide more comfort to individuals in the home while controlling
unwanted heat flow.
Energy efficient Insulation provides a resistance to heat, which
naturally flows from warmer to cooler areas. This means in winter,
unheated areas will become heated as warmer air moves towards cooler
areas. Also, in the summer, heat will flow from the exterior to the
interior of a building both directly and indirectly.
Finding energy efficient insulation is important when building or
insulating a home in order to control both winter and summer heat
flow. Insulation is measured by its resistance to heat flow or R-value.
The higher the R-value, the more effective the insulation. The R-value
is determined by the type of insulation used and its thickness or
density. A high R-value is also dependant on where and how the insulation
is installed as well as by the climate of the area.