Recommended R Value For Ceiling Insulation Australia

With australia s rising energy prices we recommend choosing the highest r value you can afford.

Recommended r value for ceiling insulation australia.

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. R value measures how well certain building insulation materials can resist heat. We recommend installing a minimum of r4 0 ceiling insulation.

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. In australia ceiling insulation is available in a variety of brands and r values ranging from a r3 5 to r7 0. When determining how much insulation you need don t guesstimate calculate. For the purpose of insulation regulations australia is divided into many different.

Insulation level are specified by r value. R value is a measure of insulation s ability to resist heat traveling through it. The regulations in the building code of australia bca that apply to home insulation are complicated. The higher the r value the greater the insulation performance.

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. See the department of energy s doe ranges for recommended levels of insulation below. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. Roof insulation r value ranges from r2 5 to r7 0 and are between 120mm and 290mm thick.

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. Recommended home insulation r values. 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. 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.

An uninsulated ceiling can contribute to 35 of your homes winter heat losses and summer heat gains. Know exactly how much you need with our project calculators. The table below shows what levels of insulation are cost effective for different climates and. 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.