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R1.8 GreenStuf Underfloor


GreenStuf Underfloor is designed to provide thermal insulation under exposed joist floors of new and existing timber-framed buildings. GreenStuf Underfloor reduces heat loss through floors and assists in reducing drafts caused through joins in the floor boards. It comes in a range of thermal performance options and as rolls pre-cut to fit standard exposed timber joist floors.

GreenStuf Underfloor is ideal for insulating existing homes. It’s easily installed by stapling into place between the joists, and because it’s made from polyester it won’t itch or scratch so it’s perfect for weekend DIY project that will make a big difference to your home and health of your family.

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Rl.8 Underfloor lOOmm 450mm x 7.78m x 5 Rolls per Pack
500mm x 8.75m x 4 Rolls per Pack
600mm x 7.29m x 4 Rolls per Pack
  • Polyester is non-toxic, non-irritating, non-allergenic and safe to touch.
  • No nasty chemicals to worry about and no microscopic fibres to itch, irritate or be inhaled.
  • No need for any special precautions so it’s ideal for DIY’ers to install.
  • Safe and friendly for the whole family.
  • Not affected by moisture, mould or mildew and is resistant to insect and vermin attack.
  • GreenStuf® insulation is backed by Autex with a 50 Year Durability Warranty and all products exceed the NZ Building Code requirements including all relevant fire standards


For more detailed information about this product please download the brochure:

Download Brochure

Installation Video