Recommended R Value For Ceiling Insulation Australia

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

Recommended r value for ceiling insulation australia.

Recommended home insulation r values. 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. 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.

Those in the freezing alpine areas of australia require insulation with at least an r value of 6. R value measures how well certain building insulation materials can resist heat. The higher the r value the better the thermal performance of the insulation. How much insulation does my home need.

With australia s rising energy prices we recommend choosing the highest r value you can afford. We recommend installing a minimum of r4 0 ceiling insulation. For the purpose of insulation regulations australia is divided into many different. 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.

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

Insulation level are specified by r value. See the department of energy s doe ranges for recommended levels of insulation below. 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. The higher the r value the greater the insulation performance.

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 regulations in the building code of australia bca that apply to home insulation are complicated. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. When determining how much insulation you need don t guesstimate calculate.

Roof insulation r value ranges from r2 5 to r7 0 and are between 120mm and 290mm thick.