Roof Insulation Ratings Australia

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. The higher the r value the better the thermal performance of the insulation. Direction of heat flow.

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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.

Roof insulation ratings australia.

The greater the r value the greater the resistance to heat transfer and the greater the insulating effect and subsequent energy savings. Compare the environmental benefits of different products. An uninsulated ceiling can contribute to 35 of your homes winter heat losses and summer heat gains. In australia ceiling insulation is available in a variety of brands and r values ranging from a r3 5 to r7 0.

Direction of heat flow. Ask about recycled content and how easily the product can be recycled after use. Dark coloured roofs absorptance 0 6 r5 1. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces.

Choosing the best insulation for your home is important that s why we recommend you consider all your options beforehand. It s recommended that you install foil backed insulation in your roof to an r value of r1 0 or higher. R value is a measure of insulation s ability to resist heat traveling through it. See the department of energy s doe ranges for recommended levels of insulation below.

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. With australia s rising energy prices we recommend choosing the highest r value you can afford. Very light coloured roofs absorptance 0 4 r4 1. How to install insulation.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. Those in the freezing alpine areas of australia require insulation with at least an r value of 6. We recommend installing a minimum of r4 0 ceiling insulation. Insulation level are specified by r value.

If you live in cooler climates such as melbourne sydney or adelaide then we recommend upgrading to r5 0 or r6 0 roof insulation. R values the r value is a measure of a material s resistance to heat flow known as thermal resistance. Roof insulation r value ranges from r2 5 to r7 0 and are between 120mm and 290mm thick. Light coloured roofs 0 4 absorptance 0 6 r4 6.

The r value is a measure of the insulation batt s resistance to heat flow also known as thermal resistance.