Rock Mineral Wool - Knauf Insulation Rocksilk® RainScreen Slab - BGV

Knauf Insulation Rocksilk® RainScreen Slab - BGV


Rainscreen facade insulation


Rock Mineral Wool


Rocksilk® RainScreen Slab is a Rock Mineral Wool slab with a black glass veil facing, designed for use as sheathing insulation in rainscreen façade systems both below and above 18m in height.

It is non-combustible with the best possible Euroclass A1 reaction to fire classification, and is manufactured using Knauf Insulation's unique bio-based binder, ECOSE® Technology.


  • Black Glass Veil makes the product suitable for semi visible areas such as behind perforated panels.
  • BBA Accredited 3D U-value calculation service - the most accurate calculation available.
  • Made with a water-repellent additive - slabs will maintain their integrity while exposed on site.



Thickness (mm) Length (mm) Width (mm) Thermal Conductivity (W/mK) R-Value (M²K/W) Euroclass Reaction to Fire Classification Facing Area Per Pack (M²) Packs per pallet Quantity per pack
100 1200 600 0.034 2.90 A1 Faced 2.880 12 4
120 1200 600 0.034 3.50 A1 Faced 2.880 10 4
150 1200 600 0.034 4.40 A1 Faced 2.160 12 3

Certification & Memberships

Eurofins Gold Eurofins Gold
Euroclass A1 Reaction to Fire Classification Euroclass A1 Reaction to Fire Classification
Green Guide Rating A+ Green Guide Rating A+
CE Marking CE Marking
EN 15804 EN 15804
Made in Britain Made in Britain


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