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185/6 Knauf Rocksilk Soffit Linerboards extra (1200mmx600mm)

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185/6 Rocksilk® Soffit Linerboard Extra is a non-combustible Rock Mineral Wool slab featuring a non-combustible facing board, specially designed for insulating structural soffits in semi-exposed environments like open-sided car parks. It achieves the highest Euroclass A1 reaction to fire classification and is manufactured using Knauf Insulation’s innovative bio-based binder, ECOSE® Technology.

Features and Benefits:

  • Semi Exposed Environments: Ideal for use in semi-exposed environments, offering durability and resistance.
  • Thermal Upgrade: Provides a solution to enhance the thermal performance of existing floors without compromising floor height.
  • Easy Installation: Can be installed without the need to access areas above the floor, making the process straightforward and efficient.

Thermal conductivity

0.034 W/mk

Fire Rating

Euroclass A


Rock Mineral Wool

Compressive strength



non combustible facing board

R Value (M2K/W)


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