Earthwool® Glasswool | Specialty

Modern glasswool insulation for New Zealand

Earthwool glasswool insulation is extremely versatile and can be used in a wide range of applications including acoustic, commercial roofing blankets, HVAC and industrial processes. Earthwool glasswool is rot-proof, odourless, non-hygroscopic, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria. This Knauf Insulation product is made using ECOSE® Technology. It is chemically neutral, does not contain impurities and the wall & ceiling range comes with a 50 year warranty.


Earthwool Glasswool is designed for use:

  • Commercial roofing blankets
  • Internal Wall & Midfllor Insulation for acoustic
  • DriTherm Masonry slab
  • Heating, Ventilation and Air Conditioning
  • Industrial processes
  • Sustainability

    Earthwool glasswool from Knauf Insulation uses a high proportion of post-consumer recycled glass bottles and is one of the most sustainable types of insulation available. Earthwool glasswool insulation is naturally brown - containing no added phenols, formaldehyde, acrylics or artificial colours. It is in full compliance with formaldehyde-free specifications.

    ECOSE® Technology

    The new generation of glasswool products made using ECOSE Technology benefit from a binder which has no added formaldehyde and is based on renewable bio-based materials instead of traditional petrol-based chemicals. The technology has been developed for glasswool and rock mineral wool products, enhancing the environmental credentials whilst maintaining the thermal, acoustic and fire performance and mechanical properties.

    ECOSE Technology gives a distinctive look to Knauf Insulation's glasswool products - a natural shade of earthy brown, with no added dyes, bleaches or artificial colours. Earthwool glasswool is also less dusty and has a much softer and friendlier feel whilst retaining its rigidity and stiffness properties. The ECOSE Technology binder is less energy intensive than the formaldehyde binders used in traditional glasswool insulation. As there is no formaldehyde or phenols used in the manufacturing process for Earthwool glasswool, it also improves the indoor air quality of buildings where these products are installed (compared to conventional glasswool products).

    The new generation of glasswool made using ECOSE Technology is already used in buildings throughout the USA, UK, Europe and Australasia.