Insulation acts as a barrier to heat loss and heat gain, particularly in roofs and ceilings, walls and floors. It helps to keep your home warm in winter and cool in summer.
Why is insulation important?
Half of the energy we use to heat or cool our homes can simply leak out without insulation.
Insulation helps to:
- reduce use of heating and cooling systems
- save money on your energy bills
- improve your comfort at home.
Some types of insulation can also make your home more soundproof.
Types of insulation
There are two main types of insulation:
Bulk insulation (usually batts, rolls or boards) acts as a barrier to heat flow, keeping unwanted heat in or out of your home.
Reflective insulation helps keep your home cool in summer by deflecting radiant heat. It’s usually shiny aluminium foil laminated onto paper or plastic and is available as sheets and batts.
Ceiling insulation is particularly important, but there are other areas of your home that can be insulated as well. To maximise the efficiency of your insulation, draught-proof your home to reduce the leaking of heated or cooled air.
Roofs and ceilings
If your roof or ceiling isn’t insulated, you could lose up to 45 per cent of your heating and cooling energy via the roof.
Uninsulated walls can increase heat loss in winter by 15 per cent.
Heat can be lost through some types of floors – up to 5 per cent of your winter heat. Carpets are one option to insulate a floor. In hot climates floor insulation may interfere with the natural cooling from the ground beneath the house.
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