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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%.

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Q: What is the physics behind loft insulation?
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Related questions

Why is there loft insulation?

There is loft insulation to keep in all the warm air from the heater


What is loft insulation used for?

It's used to insulate your loft.


Does loft isulation burn?

dependes what type of loft insulation you have


How can you put insulation in to sentence?

the loft insulation is bad in that house


How does loft insulation work?

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.


What would happen if there was no loft insulation?

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.


What materials are used in loft insulation?

plastic


How the thickness of loft instulation affects heat loss?

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.


What thermal transfer does loft insulation reduce?

conduction


How heat loss is prevented by loft insulation?

my name is what


How much energy is saved by loft insulation?

40%


Where can one find information on loft insulation prices?

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.