Glass Mineral Wool - Earthwool Loft Roll 40


Pitched roofs at ceiling level


Glass Mineral Wool


Earthwool Loft Rolls are non-combustible, Glass Mineral Wool rolls, manufactured using our revolutionary ECOSE® Technology, and are designed specifically for use in cold lofts where pitched roofs are insulated at ceiling level.

Earthwool Loft Roll 40 provides a superior performance with a thermal conductivity of 0.040 W/mK. 

Combi-cut products have partially cut perforations, providing the flexibility to be used between joists at either 400mm or 600mm centres, or used unsplit as a full-width roll.


  • Excellent thermal performance.
  • Non-combustible A1 Euroclass Reaction to Fire classification
  • Combi-cut products are supplied partially perforated
  • Lightweight quilt for ease of installation.
  • Available as partially cut rolls for use with:
    • timber joists at 400mm centres or,
    • timber joists at 600mm centres or,
    • unsplit as a full width roll.



Thickness (mm)Length (mm)Width (mm)Thermal Conductivity (W/mK)R-Value (M²K/W)Area per Roll (m²)Euroclass Reaction to Fire ClassificationRoll TypeFacingArea per Pallet (M²)
100112501140 (2 x 570mm/3 x 380mm)0.0402.512.825A1Combi-cutUnfaced307.800
15075301140 (2 x 570mm/3 x 380mm)0.0403.758.584A1Combi-cutUnfaced206.021
20048501140 (2 x 570mm/3 x 380mm)0.04055.529A1Combi-cutUnfaced132.696


Eurofins Gold
A1 Euroclass Fire Rating
Green Guide Rating A+
CE Marking
TÜV Nord

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