We recommend installing a minimum of r4 0 ceiling insulation.
Roof insulation ratings australia.
Choosing the best insulation for your home is important that s why we recommend you consider all your options beforehand.
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.
Direction of heat flow.
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.
R values the r value is a measure of a material s resistance to heat flow known as thermal resistance.
An uninsulated ceiling can contribute to 35 of your homes winter heat losses and summer heat gains.
How to install insulation.
Roof insulation r value ranges from r2 5 to r7 0 and are between 120mm and 290mm thick.
Compare the environmental benefits of different products.
See the department of energy s doe ranges for recommended levels of insulation below.
R value is a measure of insulation s ability to resist heat traveling through it.
The higher the r value the better the thermal performance of the insulation.
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.
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.
With australia s rising energy prices we recommend choosing the highest r value you can afford.
The r value is a measure of the insulation batt s resistance to heat flow also known as thermal resistance.
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.
Those in the freezing alpine areas of australia require insulation with at least an r value of 6.
Light coloured roofs 0 4 absorptance 0 6 r4 6.
Very light coloured roofs absorptance 0 4 r4 1.
Dark coloured roofs absorptance 0 6 r5 1.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
Insulation level are specified by r value.
