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Earthwool® Timber Frame Party Wall Slabs are non-combustible Glass Mineral Wool slabs, manufactured using ECOSE® Technology and designed for use in timber frame separating (party) walls providing a full-fill insulation solution which is installed as walls are being built.

Features and benefits:

  • Good thermal performance.
  • Fully filling the party wall cavity allows a zero effective U-value to be claimed in SAP.
  • Non-combustible A1 Euroclass Reaction to Fire classification.
  • Good sound absorption characteristics.
  • Suitable for use with a range of constructions registered in the Robust Details Handbook.

General information
Specification data
Product Reference

Earthwool® Timber Frame Party Wall Slab


60 mm

Thermal resistance: 1.65 m²K/W.

85 mm

Thermal resistance: 3.25 m²K/W.

Standard product features


Density (minimum): 18kg/m³.

Fire performance:

Euroclass A1 to BS EN 13501-1.


A+ generic BRE Green Guide rating.

Third party certifications
  • Eurofins Gold Certificate for Indoor Air Comfort
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