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External wall & ceiling Insulation not only is a strict requirement of the latest Environmental laws called BASIX but is a great idea for the vast savings to your heating and cooling energy bills and there are so many products on the market that you can use.
Kitome supply a standard complying 'Batt' product from Bradford, yellow and you will see them poked into all the external wall frames.
Ceiling Batts will be installed as soon as the Gyprock is fitted. External wall Batts have a lower rating to the ceiling Batts.
Have to say that I am glade that the boys did this job, I think it would make my skin itch.
Kitome did not supply internal wall insulation and it is not a requirement of BASIX, however to make the home a MUCH higher standard of heating & cooling rating, I will have the boys install 'Earthwool' in ALL the internal walls. This is a pic of the product which you can buy from your local Bunnings store and it is not only for thermal but for acoustic issues, perfect between bedrooms & bathrooms etc.
Here's their web site http://www.knaufinsulation.com.au/