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. Direction of heat flow. In australia ceiling insulation is available in a variety of brands and r values ranging from a r3 5 to r7 0.

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If you live in cooler climates such as melbourne sydney or adelaide then we recommend upgrading to r5 0 or r6 0 roof insulation.

Roof insulation ratings australia.

Insulation level are specified by r value. R values the r value is a measure of a material s resistance to heat flow known as thermal resistance. Direction of heat flow. The higher the r value the better the thermal performance of the insulation.

See the department of energy s doe ranges for recommended levels of insulation below. How to install insulation. It s recommended that you install foil backed insulation in your roof to an r value of r1 0 or higher. 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.

Dark coloured roofs absorptance 0 6 r5 1. The r value is a measure of the insulation batt s resistance to heat flow also known as thermal resistance. Compare the environmental benefits of different products. Light coloured roofs 0 4 absorptance 0 6 r4 6.

Very light coloured roofs absorptance 0 4 r4 1. Roof insulation r value ranges from r2 5 to r7 0 and are between 120mm and 290mm thick. The table below shows what levels of insulation are cost effective for different climates and locations in the home. The greater the r value the greater the resistance to heat transfer and the greater the insulating effect and subsequent energy savings.

R value is a measure of insulation s ability to resist heat traveling through it. With australia s rising energy prices we recommend choosing the highest r value you can afford. Choosing the best insulation for your home is important that s why we recommend you consider all your options beforehand. An uninsulated ceiling can contribute to 35 of your homes winter heat losses and summer heat gains.

Those in the freezing alpine areas of australia require insulation with at least an r value of 6. 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. Ask about recycled content and how easily the product can be recycled after use. 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.

We recommend installing a minimum of r4 0 ceiling insulation.