Trade Information

About Radiant Heat Barriers

Everyone love Australian summer but it’s not very pleasant when human habitats over heats. Homes / warehouses / barns often have a need to run air conditioners in order to keep the interior of their buildings cool during the sweltering hot summer days, and heaters in the cold winters.  With the projected Eskom tariff increases over the next few years this is going to become a very expensive means of creating a cooler more comfortable ambient temperature within your building.  There is a much easier way, a simple home improvement which will significantly cut down on your cooling and heating costs

This green home improvement is a radiant Heat Barrier

Understanding Heat Flow

RADIATION - Is the transfer of heat from one object to another without the objects making contact. e.g. Heat from a space heater is Radiant Heat.  Radiant heat is transferred by electromagnetic waves.  The radiant heat is released when the waves are absorbed by an object for example the roof, which then transfers the heat to your roof space.  93% of summer heat gain is from radiant heat.

CONVECTION -  Is the transfer of heat by air or liquid, this type of heat transfer travels up or down.   As the air in your building circulates the warm air rises and escapes through the ceiling into your roof space and out through the roof.

CONDUCTION  -  Is the transfer of heat through two objects that are in contact with each other.  Heat flows from the warmer object to the cooler object.  An example of this is touching a cast iron handle from a pot which is heated on the stove,  the pot will become hot and transfer heat to the handle.

What is a Radiant Heat Barrier?

It is very important to understand what a Radiant Heat Barrier is, and how it works.  Insuations R us Radiant Heat Barriers consist of an aluminium foil sheet, which is laminated to a layer of plastic bubbles / XPE foam on one side and a foil facing on the other side.

This sheet of foil laminate is placed in the roof space just below your roof tile or roof sheeting.  The roof space is the hottest part of our home and the heat build up due to radiant Heat Gain into the roof is the primary cause of heat transfer into your home.

This thin layer of foil will knock back radiant heat transfer into your roof space and subsequently into your building, because it keeps the roof space cooler, you will require less energy to maintain a comfortable indoor temperature.

What is traditional Insulation and how does it work?

Without insulations R us Radiant Heat Barriers you traditional bulk insulation acts like a sponge, absorbing all the heat possible. The more you have the more it can absorb, but the way for insulation to shed the heat it has absorbed is to pass it on down to the cooler space below it which is the interior of your building. The insulation stays warm well into the night and the interior will only begin to cool when the insulation cools down in the early hours of the morning.

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