4mm Foil / Bubble / Foil Radiant Insulation

Our bubble foil insulation is made up of a layer of air bubbles sandwiched between two 99+% pure aluminium foils. It reflects back 97% of the radiant heat to achieve thermal comfort inside home all year around.

Because our insulation is foil facing on both sides, it will provide benefit by reflecting heat for both summer and winter conditions (compared to single sided foils which only reflect heat in one direction).

Each roll covers 30m² and measures 1.2m x 25m. Please contact us for bulk discounts. We can ship Australia Wide, please see our freight charges. If buying more than 3 rolls contact us for better prices on freight.

If you have a question not answered below please don't be afraid to contact us.

What is radiant heat?

Radiant heat is energy. Radiant heat is heat that is transmitted from a heat source through space. It is the heat we feel from distant objects like the sun or a fire. Radiant heat is also called infra-red heat or infra-red energy. A whopping around 80% of the heat transfer in your building envelope is via radiant heat energy, which heats up the house in summer.

Bulk Insulations and R-values?

Material R values are determined in a laboratory by placing a product between two fixed temperature plates set at 33 and 13 degrees Celsius (a temperature difference of 23 deg) and measuring the heat transfer that takes place over a four hour period. The heat transfer measured is then presented as the material R-value.

The problem is that the quoted R values are only valid for the standardised conditions in which the test took place. If the temperature difference is increased, the R-value decreases. This is the case in real life conditions, where temperatures of up to 50-70 degrees are common in roof spaces during summer. In these sorts of conditions the actual R-value your bulk insulation would be much lower than what is quoted.

Also, keep in mind that no matter how high the R-value might be, bulk insulation does not stop any heat flow at all. It slows it down by absorbing it, but later, when the material has reached its thermal capacity, it will give off this heat.

How Radiant Insulation Works:

Radiant insulations such like bubble foil product works differently to traditional bulk insulations and don’t merely slow down or ‘resist’ heat transfer. Radiant insulations block radiant heat (up to 97% is reflected) by reflecting it back towards the direction it came from. This ensures that the heat never reaches the inside of your house.

A simple test to prove the effectiveness of reflective insulation is to place a layer of bulk insulation (such as a fibreglass batt) between yourself and a source of radiant heat (such as an oven with the door pulled down or near an open fire). After a short time you will find that your side of the batt is warm to touch and it will be radiating heat at you.

Then place a sheet of foil between you and the source of radiant heat. You should find that nearly all of the radiant heat has been blocked and very little reaches you – even though the foil will be warm to touch. It will stay this way.

It is the foil that does the summer insulating, not the bulk insulations.

What is the R-value of your material?

As already explained, R-values are a measure of a materials resistance to conductive heat transfer. Radiant insulations work on a totally different principle and thus simply knowing the R-value of a reflective material is useless.

In the case of reflective insulations, Total R-values must be used. The Total R-value simply indicates the thermal performance of an insulation system, determined by a calculation process of airspace values and individual R-values of building materials.

We have not yet approached a relevant laboratory to conduct these calculations and therefore we don’t have Total R-value figures for our material. However, it will be very similar to the Total R-values advertised by other manufacturers for their various installation systems (for similar material thicknesses). So by looking at their figures you can get a good idea of the type of performance you can expect - for a much more affordable price!

Shipping:

Note: If buying more than 3 rolls contact us to get a better freight price.

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Note: If you are in Tasmania, Postage costs are the flat rate listed above.

Pickup is available from our store in Tullamarine, Melbourne.

Payment:

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