Earthwool® Glasswool

Modern glasswool insulation for New Zealand

Earthwool glasswool insulation segments and rolls are extremely versatile and can be used in applications from wall and ceiling insulation to HVAC and industrial applications. Earthwool glasswool is rot-proof, odourless, non-hygroscopic, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria. It is chemically neutral, does not contain impurities and comes with a 50 year warranty.


Earthwool Glasswool is designed for use:

  • Ceiling Insulation segments and blankets
  • External Wall Insulation segments for thermal and acoustic
  • Internal Wall Insulation for acoustic
  • Underfloor Insulation 'quilted' and 'faced' rolls
  • DriTherm Masonry slab
  • Heating, Ventilation and Air Conditioning
  • 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. Each pack of glasswool from Knauf Insulation uses up to 15 recycled glass bottles. 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 'super soft' feel of Earthwool glasswool insulation comes from ECOSE Technology, a revolutionary, new sustainable binder born from five years of intensive research. Based on rapidly renewable materials instead of petro-based chemicals commonly used in other insulation products, ECOSE Technology reduces binder embodied energy by up to 70%.