Insulation is one the most effective ways to improve the energy efficiency of a home. Insulation acts as a barrier to heat flow. Cellulose Fibre Insulators consist of recycled newspaper pulp mixed with borax and boric acid. In this post, we take a closer look at the most efficient on the market and our preferred insulation material - Cellulose Fibre. Why? Well, read on as we share some of the benefits of having Roo Roofing Cellulose Fibre as an insulator for your roof.