What is the best Ceiling Insulation in Australia?

Which roof or ceiling insulation is best in Australia?

An uninsulated ceiling can contribute to 35% of your homes winter heat losses and summer heat gains. In Australia, ceiling insulation is available in a variety of brands and R-values ranging from a R3.5 to R7.0. Choosing the best insulation for your home is important, that’s why we recommend you consider all your options beforehand. Additionally, take note of the climate zone you are living in, as this will affect your recommended R-value rating.

Ceiling insulation Brand Comparison

At Pricewise Insulation, we stock a large range of ceiling insulation brands, including Knauf Earthwool, Autex Greenstuf, Bradford, and Fletcher Pink Batts! Our most popular ceiling product is Knauf Earthwool insulation ceiling batts which are available in an R2.5 up to R6.0. This product is cost-effective and durable, coming with a 50 year warranty for your peace of mind. Below is a list of the most popular features that each brand has to offer;

Knauf Earthwool Insulation:

  • High thermal performance
  • Sound absorbing capabilities
  • Soft to handle and install (low itch factor)
  • ECOSE technology binder
  • No added formaldehyde

Autex Greenstuf:

  • Made from 100% polyester
  • Non-allergenic properties
  • Itch-free polyester material
  • Manufactured with a minimum of 50% recycled PET Plastics

Bradford Gold & Polymax:

  • Thermal and acoustic properties
  • Low allergen, shrink, mould, rot or deteriorate
  • R-values up to 7
  • Hypoallergenic  

Fletcher Pink Batts:

  • Lightweight, flexible, and resilient glasswool
  • Thermal and acoustic properties
  • Firm and rigid batts making them easy to install between standard stud spacing
  • Up to R6.0 for ceiling insulation

Recommended Ceiling Insulation R-values

Firstly, it is important to follow the BCA requirements for ceiling insulation, as Australia has many different climate zones and each zone has its own requirements. The Insulation Council of Australia and New Zealand (ICANZ) claims that the payback period for home insulation is around 3 to 5 years.

Image Source: Department of Change and Energy Efficiency

Ceiling insulation R-values range from an R3.5 to R7.0. The higher the R-value the greater the thermal performance and the insulating ability of the product. Generally, we recommend installing a minimum of R4.0 for most major cities.  If you live in Melbourne, Sydney or Adelaide upgrading to an R5.0 or R6.0 is recommended as the ability to minimize heat gains and heat losses during summer and winter is increased. For alpine conditions we recommend an R6.0 as this is the highest available R-value and most effective for these conditions. In warm and humid conditions, such as those in Brisbane, Perth, and Darwin an R3.5 is adequate for your ceilings.

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