Kingspan Architectural Facades Systems K-Roc Image


K-Roc™ Rainscreen Slab is a soft and rigid stone mineral wool slab containing a water repellent additive, designed for use in buildings with a storey 18m or more above ground level.
  • Thermal conductivity of 0.034 W/m·K
  • ​Fire Performance Euroclass A1 Reaction to Fire rating
  • BBA Certified

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Product Information

Product Dimensions
Product Weight & Thermal Performance
Recommended Fixing Pattern
Fire Compliance & Environmental Ratings


1,200mm x 600mm slab size

Available thicknesses: 80mm, 100mm, 120mm and 150mm.

Thickness & Thermal Performance

Insulant Thickness
Thermal Resistance
80 2.35  
100 2.90  
120 3.50  
150 4.40  

The thermal performance of this rock mineral fibre product is declared in accordance with EN 13162: 2012, as required by the EU Construction Product Regulations.
EN13162: 2012 does not provide for any assessment of the degradation of thermal performance over time. As such, Kingspan Facades cannot guarantee that the declared thermal performance of this product will be valid for the lifetime of the product’s use.
Kingspan Architectural Facades Systems KSF K-Roc Rainscreen Slab Image

The image below shows the recommended fixing pattern with

3 fixings per m2.

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Scan for BBA Certificates

  • The use of K-Roc™ Rainscreen Slab in Rainscreen Cladding Systems is covered by BBA Certificate 20/5729.
  • The use of K-Roc Rainscreen Slab for use in timber or steel frame construction is covered by a BBA certificate 16/5366
  • BES 6001; Issue 3.1
  • ISO 9001
  • ISO 14001


K-Roc Rainscreen Slab is a soft, rigid stone mineral wool insulation with the following properties:
  • Reaction to Fire, Euro Class: A1; 
  • Thermal Conductivity: 0.034 W/m.K / 10 degrees and relative humidity, refer to EN Standard BS EN 13162: 2012+A1: 2015
  • Density: 45kg/m3 ;
  • Water Absorption (Short Term): WS, (Wp): <=1kg/m2 ;
  • Water Absorption (Long Term): WL(P)(Wlp): <=3kg/m2 ; 
  • Water Vapour Transmission: 1Mu, μ.
Fire Performance Euroclass A1 Reaction to Fire rating

Environmental Performance The raw materials used in the manufacture of K-Roc Rainscreen Slab have a high content of recycled materials and this helps to minimise the environmental impact of construction, reducing carbon emissions by diverting materials from landfill and limiting the depletion of finite natural resources. At end of life, K-Roc Rainscreen Slab offer a ‘Cradle to Cradle’ approach to recycling where materials are recycled in a closed loop - used, recycled and reused again without losing any material quality.

KSF K-Roc Declaration of Performance

Download to read more about the performance of K-Roc

KSF K-Roc Rainscreen Slab PDS

Planet Passionate
Through our new Planet Passionate 10-year groupwide sustainability programme, we aim to make significant advances in the sustainability of our business and of our products.

Rainscreen options for use with K-Roc Rainscreen Slab

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Download the Ideas Book for inspiration

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Kingspan Facades : Greenfield Business Park No.2 : Holywell : Flintshire : CH8 7GJ : UK 
Tel:  +44 (0) 1352 716100 email: