Glasswool - Earthwool glasswool insulation: Internal (Acoustic) wall batt

Earthwool glasswool insulation: Internal (Acoustic) wall batt


  • High thermal performance - year round comfort
  • Sound absorbing
  • Non-combustible
  • Saves energy - lower energy bills
  • No added formaldehyde
  • Soft to handle and install
  • 50 year warranty
  • Compression packed - more product per pack
  • Odourless.

Product Description

The Earthwool® glasswool insulation: internal (acoustic) wall batt range includes a selection of densities to provide builders, designers, installers and DIYers the opportunity to choose the best acoustic performance for their project. Earthwool® glasswool insulation: internal (acoustic) wall batt will improve the acoustic performance of the building in which it has been installed by absorbing the transfer of unwanted sound from external sources and between adjoining rooms.

Super-soft to handle and install, Earthwool® glasswool insulation is made using up to 80% recycled glass and with ECOSE® Technology, a sustainable, bio-based binder that contains no added formaldehyde.


Product TypeBatt
Facing TypeUnfaced


Renovation or New BuildingRenovation & New Building
Building TypeResidential & Commercial

Product Range


Material CodeApplicationR-Value (m²K/W)Density (kg/m³)Thickness (mm)Width (mm)Length (mm)Pieces per packArea per pack (m²)
471045Timber frame1.4145058011603825.57
529446Metal frame1.3115060027002032.40
471049Timber frame2.0147558011602416.15
529447Metal frame1.9117560027001422.70
471070Timber frame2.620904301160146.98
471071Timber frame2.620905801160149.42
471040Timber frame2.827904301160104.99
471041Timber frame2.827905801160106.73



Thermal conductivity-ASTM C 518 and AS/NZS 4859.1: 2002.
Thermal resistance-ASTM C 653 and AS/NZS 4859.1: 2002.
Fire Hazard PropertiesAS/NZ 1530.3Ignitability: 0, Spread of Flame: 0, Heat Evolved: 0, Smoke Developed: 0-1.
Water Vapour Absorption-Less than 5% by weight.
Microbial Growth-Does not support microbial growth.
Corrosion Resistance-No greater than sterile cotton.
CombustibilityAS 1530.1Non-combustible.


Green Tag Level A Certification
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BRANZ Appraised (Earthwool glasswool)
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CodeMark - Earthwool glasswool
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Eurofins - Indoor Air Comfort Gold (Unfaced GMW)
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