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Branz appraised product R rating=1.8 *Total system performance up to R2.6 based on typical house construction depending on installation method.


Autex Greenstuff is NZ's leading brand of polyester insulation made in New Zealand. This product is formaldehyde free and made with up to 70% recycled PET (eg. recycled coke bottles).

Polyester is very easy to install made from the same material as duvet inners (no respiratory and itchy side effects that some people experience with fibreglass) and staples up easily using standard staple gun. These can be installed using between the joist method or stapled to underside of joists as shown in photo to create a complete thermal envelope.

Full instructions provided. No experience necessary. Anyone can do it and results are instant.

Polyester underfloor insulation does not hold moisture (so timber can breath) or require electrical wiring to prewrapped (to prevent fire risk) like other underfloor products.

Also acts as a remarkable sound absorber even underfloor making your home quieter and more cozy feeling.

This auction is for 2 bales and measure 25m2 per bale and blanket width is 870mm.

Product is freight free to all major North Island towns. Free pick up from our Auckland & Napier. For single bale and SI freight please ask.

Please ask me about any vapour barrier, underfloor product or situation as I have a lot of knowledge and am happy to help.

Autex products do have some stock delays - sometimes it can take 1 - 2 weeks for delivery, please check stock with me if this is an issue. Please click here to ask a question
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Shipping options

  • Freight Free to North Island towns$0.00
  • Free Pick up from Napier or Auckland store$0.00
  • Store allows pick-ups
  • Store location: Napier, Hawke's Bay, NZ

Payment options

  • Other options
    Cash, NZ bank deposit, Credit card on ECSC website (Conditions apply, please ask through Q & A)