Recommended R Value For Ceiling Insulation Australia

An uninsulated ceiling can contribute to 35 of your homes winter heat losses and summer heat gains.

Recommended r value for ceiling insulation australia.

The insulation must achieve a minimum r value of 1 0 in zones 1 to 7 and a minimum r value of 2 0 in zone 8. 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. Know exactly how much you need with our project calculators. 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.

With australia s rising energy prices we recommend choosing the highest r value you can afford. For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed your attic to reach r 30 if you live in zones 2 or 3. When determining how much insulation you need don t guesstimate calculate. 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.

The higher the r value the better the thermal performance of the insulation. Roof insulation r value ranges from r2 5 to r7 0 and are between 120mm and 290mm thick. R value is a measure of insulation s ability to resist heat traveling through it. Those in the freezing alpine areas of australia require insulation with at least an r value of 6.

How much insulation does my home need. The table below shows what levels of insulation are cost effective for different climates and. Insulation level are specified by r value. As well as determining specific r value requirements for different parts of a home they also contain requirements for ventilation and various other related issues.

In australia ceiling insulation is available in a variety of brands and r values ranging from a r3 5 to r7 0. Recommended home insulation r values. 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 insulation must be water resistant and be continuous from the adjacent finished ground level to a depth of 300mm or for at least the full depth of the vertical edge of the concrete slab on ground.

Choosing the best insulation for your home is important that s why we recommend you consider all your options beforehand. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. For the purpose of insulation regulations australia is divided into many different. The regulations in the building code of australia bca that apply to home insulation are complicated.

See the department of energy s doe ranges for recommended levels of insulation below.