Those in the freezing alpine areas of australia require insulation with at least an r value of 6.
Roof insulation ratings australia.
If you live in cooler climates such as melbourne sydney or adelaide then we recommend upgrading to r5 0 or r6 0 roof insulation.
In australia ceiling insulation is available in a variety of brands and r values ranging from a r3 5 to r7 0.
The greater the r value the greater the resistance to heat transfer and the greater the insulating effect and subsequent energy savings.
Light coloured roofs 0 4 absorptance 0 6 r4 6.
The higher the r value the better the thermal performance of the insulation.
With australia s rising energy prices we recommend choosing the highest r value you can afford.
It s recommended that you install foil backed insulation in your roof to an r value of r1 0 or higher.
Ask about recycled content and how easily the product can be recycled after use.
An uninsulated ceiling can contribute to 35 of your homes winter heat losses and summer heat gains.
Direction of heat flow.
Very light coloured roofs absorptance 0 4 r4 1.
By looking at insulation as a long term investment spending a couple of extra hundred dollars on the right insulation now can save you thousands over the life of your home.
Dark coloured roofs absorptance 0 6 r5 1.
R value is a measure of insulation s ability to resist heat traveling through it.
The r value is a measure of the insulation batt s resistance to heat flow also known as thermal resistance.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
R values the r value is a measure of a material s resistance to heat flow known as thermal resistance.
We recommend installing a minimum of r4 0 ceiling insulation.
How to install insulation.
Insulation level are specified by r value.
Direction of heat flow.
Compare the environmental benefits of different products.
All insulation materials that are sold in australia must meet australian standard as nzs 4859 materials for the thermal insulation of buildings even if they are imported.
Insulation in zones 1 and 2 typically require an r value of 3 or 4 while properties in zones 3 to 7 will require an r value of at least 5.
Roof insulation r value ranges from r2 5 to r7 0 and are between 120mm and 290mm thick.
