Insulation impedes the flow of energy. In the case of insulating a loft, this energy is in the form of heat. In the winter, when the inside of the house is warm and outside is cold, the insulation makes it more difficult for heat to escape through the roof. In the summer, the insulation keeps the heat outside the house. The rate of that increased difficulty is called an R-factor, such as R-30 or R-60. The higher the R-factor, the better insulated a house will be. Up to 25% of heat loss in a house occurs through the roof, so in theory, a well insulated loft could reduce heating and cooling bills by 20-25%.
Generally, the heat in your house rises. This can mean that a lot of heat is lost through the roof. If you put insulation in your loft, the insulation is a poor conductor of heat so the heat stays below the loft and your loft is cold. Then less heat gets to the roof and so less heat is lost.
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The thicker the loft insulation the less heat escapes The thicker the loft insulation, the more trapped air there is which helps to keep heat in as air is a good insulator.
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Exactly what happened in the days when there was routinely no loft insulation, namely, people spent more on energy bills because they were losing heat through their lofts.
There is loft insulation to keep in all the warm air from the heater
It's used to insulate your loft.
dependes what type of loft insulation you have
the loft insulation is bad in that house
Generally, the heat in your house rises. This can mean that a lot of heat is lost through the roof. If you put insulation in your loft, the insulation is a poor conductor of heat so the heat stays below the loft and your loft is cold. Then less heat gets to the roof and so less heat is lost.
With no loft insulation you would lose a lot of heat through your loft and be colder, and spend a lot more money on fuel to keep warm in winter.
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The thicker the loft insulation the less heat escapes The thicker the loft insulation, the more trapped air there is which helps to keep heat in as air is a good insulator.
conduction
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40%
Loft insulation is a relatively inexpensive and easy way to save on energy costs. The cost of insulation varies depending on the size of the loft area. Local insulating companies will come to your home and give you a free quote for your insulating needs.