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ROCKWOOL HARDROCK Multi-Fix DD 185mm - 7.20m2 Pallet

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Hardrock Multi-Fix (DD) is a versatile flat roof solution which carries with it exceptional acoustic and fire resistance properties. Suitable for any building type, Hardrock Multi-Fix (DD) is compatible with an array of flat roof systems including; Single-Ply, EPDM, green roof, bitumen & liquid membranes.

Hardrock Multi-Fix (DD) has excellent acoustic properties and can be used in combination with Rockwool Acoustic Infill’s and Rockwool Acoustic Membrane to provide high performance, acoustic flat roof systems. In addition, Hardrock Multi-Fix (DD) is tested to the highest European fire classification and has also been tested to meet the highest LPCB standards.

Advantages of HARDROCK Multi-Fix DD

  • Achieves Euroclass A1 non-combustibility
  • Excellent acoustic reduction, absorption and impact performance
  • Dimensionally stable
  • A sustainable solution made from natural materials


Length: 1200mm
Width: 1000mm
Thickness: 185mm
Coverage: 7.20m2
Compliance: BS EN 13162, ISO 14001
Reaction to fire: A1 (BS EN 13501-1)
Thermal conductivity: 0.039 W/mK
Water vapour resistance: 5.9 MNs/gm


Length 1200mm Thickness 185mm Width 1000mm


Application Flat Roofing Features Fire Protection Material Mineral Wool

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