Natural Fibre Building Insulation that has high performance and made from recycled product. Safe, meets or exceeds all building code requirements. Made in the USA and meets Australian material approval. This product has the highest noise control qualities while providing virtually an airtight seal. Must be installed with special equipment to assure correct applications. No fiberglass, mineral wool, polyester or foam just natural green fibres that are custom fit to your application on site. In timber cavities the material is sprayed in place in and around any obstacle. This unique process makes a monolithic seal for walls, floors and attic / lofts. Tested by third party NAVLAB accredited company to the highest degree. Used for over 50 years in the USA with proven history.