High density acoustic insulation supplier in Australia ?

I seem to be struggling to source 45 KG / m3 or greater acoustic insulation in Australia. A lot of the search results I'm finding are out of date. I hear some materials in the country have a bad smell when used.. I think these are fibreglass type. As far as I can tell I'm after a high density 45 KG / m3 or higher stone wool product for wood frame void filling. Any help on types and current sources in Australia appreciated .

If you use fiberglass insulation instead, it would only need to be around 30 kg/m3. The higher density figure only applies to mineral wool insulation. Not sure if that helps! - Stuart -

That does.. help a lot. Many thanks

The cost of this kind of insulation varies greatly from one supplier to the next in Australia, so I suggest you read this similar topic: viewtopic.php?f=2&t=20453 Cheers, Chris.