Thermal insulation in buildings is an important factor to achieving thermal comfort for its occupants. Insulation reduces unwanted heat loss or gain and can decrease the energy demands of heating and cooling systems. It does not necessarily deal with issues of adequate ventilation and may or may not affect the level of sound insulation.

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Advantages:

• Insulation acts as a barrier to heat loss and heat gain, particularly in roofs and ceilings, walls and floors.

• In many homes insulation is the most practical and cost effective way to make a house more energy efficient, keeping it cooler in summer and warmer in winter and saving up to 40 per cent in heating and cooling bills. In addition, insulation may reduce condensation in the home. This can provide health benefits by reducing mould and damp.