Roof Insulation Ratings Australia

R value is a measure of insulation s ability to resist heat traveling through it.

Roof insulation ratings australia.

Choosing the best insulation for your home is important that s why we recommend you consider all your options beforehand. The r value is a measure of the insulation batt s resistance to heat flow also known as thermal resistance. The higher the r value the better the thermal performance of the insulation. Compare the environmental benefits of different products.

In australia ceiling insulation is available in a variety of brands and r values ranging from a r3 5 to r7 0. Those in the freezing alpine areas of australia require insulation with at least an r value of 6. 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. Direction of heat flow.

Very light coloured roofs absorptance 0 4 r4 1. With australia s rising energy prices we recommend choosing the highest r value you can afford. R values the r value is a measure of a material s resistance to heat flow known as thermal resistance. Direction of heat flow.

If you live in cooler climates such as melbourne sydney or adelaide then we recommend upgrading to r5 0 or r6 0 roof insulation. The table below shows what levels of insulation are cost effective for different climates and locations in the home. 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. We recommend installing a minimum of r4 0 ceiling insulation.

The greater the r value the greater the resistance to heat transfer and the greater the insulating effect and subsequent energy savings. An uninsulated ceiling can contribute to 35 of your homes winter heat losses and summer heat gains. Roof insulation r value ranges from r2 5 to r7 0 and are between 120mm and 290mm thick. See the department of energy s doe ranges for recommended levels of insulation below.

Insulation level are specified by r value. Dark coloured roofs absorptance 0 6 r5 1. Ask about recycled content and how easily the product can be recycled after use. It s recommended that you install foil backed insulation in your roof to an r value of r1 0 or higher.

How to install insulation.