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Autex Greenstuf | Polyester Underfloor Insulation

Autex Greenstuf | Polyester Underfloor Insulation

Underfloor Insulation

Victoria Only

Regular price $163.00
Regular price Sale price $163.00
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Tax included. Shipping calculated at checkout.
  • 100% Polyester
  • Made from 45% recycled plastic bottles
  • Not itchy, non toxic, non allergenic
  • Australian Made
  • Returns within 30 days





  • Proven effective insulation
  • Hydrophobic, does not hold moisture
  • Not affected by mold or mildew
  • Rodent resistant- rats and mice don't like it, won't eat it, and won't nest in it
  • Non-irritant, non-toxic, non-allergenic, and non-respirable
  • Not itchy, no glass fibres in your skin, eyes, or lungs
  • Non flammable (will not hold a flame)
  • 50 years Durability Warranty 


  • 100% polyester
  • Heat bonded, no chemicals or glues
  • Formaldehyde free
  • Contains at least 45% recycled component
  • ISO9001 Quality Certification
  • ISO14001 Environmental Management System Certification
  • Manufactured in Australia



R Value R2.0 R2.5
Width 450mm 450mm
Minimum Order Quantity 1 13
Coverage Per Pack 15.6m2 15.6m2
Rolls Per Pack 3 3
Length Per Roll 11.6 metres 11.6 metres
Loft/Thickness 120mm when fully re-lofted 120mm when fully re-lofted
Size of Pack Height 1400mm 1400mm
Size of Pack Diameter 700mm 700mm
Weight 16KG 20KG
Material Polyester 100% 100%
Material Recycled Poly 45% 45%
Manufactured Australia Australia
Apha W NA NA



How To

Difficulty Rating: Intermediate

ecoMaster have made it easy for you to insulate your own underfloor with underfloor insulation.

For best results using the Underfloor Insulation, we suggest opening the packs well ahead of installing to allow the insulation to start to re-loft.

What you will need:

  • Stapler (Electric or Battery, Double Insulated)
  • Staples (Galvanised)
  • Headlamp/flashlight
  • Gloves (Garden)
  • Goggles
  • Tarps (Helps keep insulation clean)
  • Lead/Extension Cord
  • Clothes that can get dirty


Hints and Tips:

  • Maurice, ecoMaster’s Technical Director, talks about the pros and cons of all the types of underfloor insulation and how to get the best results in the ecoMaster Underfloor Insulation Masterclass. It's free!
  • We recommend polyester insulation is stapled to the joists at  00-150 mm intervals to ensure it is secure and will not sag over  time.
  • For the best and long lasting result, make sure the insulation staples being used are galvanised.
  • T50 Staples were the staples of choice of the ecoMaster installation crews. You will need 750 staples per pack of Autex Greenstuf underfloor insulation.
  • * Use a good quality stapler. Stapler Rental is available if you live in Victoria. 


Q: Can I install the Autex Underfloor Insulation (Vacuum Packed) before it has commenced its re-loft?
A: Yes. As you will be stapling insulation that is much thinner than its final form, you are probably going to staple it at about mid joist rather than on the bottom of the joist. This means that when it does finally re-loft, you will not be getting R2.5 completely across the whole joist space.

If you do decide to staple the insulation to the lower edge of the joist, you will be leaving a “rodent enabling gap” between your insulation and the timber floor above.

Q: Can Autex Polyester Underfloor Insulation be used in my Climate Zone?
A: Autex Polyester Underfloor Insulation can be used in climate zones 4, 6, 7, & 8. 

Q: Do you have a warranty for the underfloor insulation rolls?
A: Autex GreenStuf Polyester Underfloor Insulation has a manufacturer warranty of 50 years (T&C’s apply). 

Q: What about the installation, is there a warranty for underfloor insulation?
A: As it is a DIY product, we cannot provide an installation warranty, as the installation process is outside of our control. We only had two situations where the insulation did not hold up (when properly installed) - one was from a tradesperson actively taking it down, the other was a wombat. 

Q: Is Autex Polyester Underfloor Insulation easy to install?
A: The difficulty of installing underfloor insulation largely depends on your individual home. Factors like height under the floor, joist spacing and access all play a part. Feel free to reach out to us if you have any questions about the installation or check out our Underfloor Insulation Masterclass based on 20 years of installation experience. 

Q: What is the difference between Autex and Polymax?
A: They are very similar products. Both are the same colour - white. Despite the name, Greenstuf is actually white.

Polymax has a nominal loft of 140mm (there are some variations), we recommend that you open the packs a day or two prior to installation to allow it to re-loft. Autex Greenstuf will be much less than 120mm straight out of the pack as it has been vacuum packed.

Lastly, the length of each roll of underfloor insulation depends upon the manufacturer - so check the Specs tab carefully.

Autex Greenstuf is available in Victoria only.
Polymax is available Australia wide - Victoria, NSW, ACT, SA and WA.



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