Cocoon Super R2.6 Underfloor Polyester Insulationfrom NZ$201.60
Cocoon Super is the highest underfloor insulation rating available and is ideal for very cold houses or to reduce subfloor drafts.
It comes in pre cut widths designed to be installed between your joists. Available in different widths to suit the joist spacings in most houses. The material grade is an R2.6.