50mm Kingspan K-Roc Rainscreen Façade Slab

Discover the 50mm Kingspan K-Roc® Rainscreen Façade Insulation Slab Class A1 – a premium rock mineral fibre insulation slab engineered specifically for installation beneath rainscreen façades across all building types and heights.

This 50mm slab delivers exceptional thermal performance with a certified thermal conductivity of 0.034 W/mK. Weighing just 45 kg/m³, it combines lightweight handling with outstanding insulation capability.

Each slab measures 600mm wide by 1200mm long (4' by 2'), providing 0.72m² coverage per board. Manufactured to the highest standards, the product holds ISO 9001 and ISO 14001 certifications, plus BBA Certificate 20/5845 for rainscreen façade applications.

The 50mm K-Roc Rainscreen Slab has been rigorously tested to BS 8414-2: 2015 + A1: 2017, demonstrating superior fire performance in external cladding systems. It also meets BES 6001 certification for responsible sourcing of construction materials.

Product specification

• Brand: Kingspan®
• Model: 50mm K-Roc® Rainscreen Slab
• Thickness: 50mm
• Length: 1200mm
• Width: 600mm
• Sheet Coverage: 0.72m² / board
• Pack Coverage: 7.2m²
• Pack Quantity: 10 slabs per pack
• Pack Weight: 15.57kg
• Weight/m2: 1.35kg ( K-Roc Rainscreen Slab has an approximate weight of 4.50 kg/m2 at a thickness of 100 mm )
• Dimensions: 1,200mm x 600mm x 50mm
• Density: 45kg/m3
• Material: Rock mineral fibre insulation slab
• Profile: Square Edge
• R-Value: 1.5m2K/W
• Thermal Conductivity: 0.034W/mK
• Fire Classification: Euroclass A1
• Finish: Unfaced
• Application Temperature: from +5 °C to +25 °C
• Shipping method: Articulated Vehicle ǀ Courier
• Applications: Insulation for use behind rainscreen façades
• BBA Certified: Yes, no. 20/5845
• Features: Class A1 Rainscreen Façade Insulation Slab
• Manufacturer: Kingspan K-Roc®

Product Highlights

1. Rock mineral fibre insulation with thermal conductivity of 0.034 W/mK.
2. Euroclass A1-rated for superior fire safety.
3. BBA Certificate 20/5845 endorses this 50mm rainscreen slab.
4. Tested and validated within façade systems to BR 135 performance standards.
5. BIM objects available for download.
6. Expert technical support includes complimentary onsite training and assistance.

Applications

K-Roc® Rainscreen Slab for rainscreen systems

Bespoke 50mm rainscreen façade systems accommodate numerous construction variations, combining different materials with diverse methods for securing and positioning external cladding to the underlying structure. When fixings and supports penetrate through the insulation layer to reach the structural frame, they create thermal bridges that can reduce overall façade thermal efficiency. Thermal isolators may help minimise these effects, though the choice and positioning of fixings and supports can still increase heat transmission through the façade assembly, affecting the U-value calculation.

K-Roc® Rainscreen Slab for steel frame systems

Contact the Kingspan Insulation Technical Service Department for precise U-value calculations tailored to your project (see download area for further details).

Kingspan K-Roc® Rainscreen Façade Insulation Slab Installation Guidelines:

• Follow the installation guidance provided for 50mm K-Roc® Rainscreen Slab, taking into account the factors outlined below.
• Check with your local Building Control authority to ensure compliance with current Building Regulations and Standards.
• In England and Wales, buildings classified as 'relevant' and taller than 18m require external wall membranes above ground level to achieve a minimum Euroclass B-s3,d0 rating.
• Since 50mm rainscreen façade systems employ proprietary designs with various fixing and support mechanisms for external cladding, consult the system manufacturer for specific installation instructions.

Info

Browse our full range of Kingspan Insulation products and filter by thickness or coverage using the left-hand menu. For advice on product suitability for your project or to request a quantity discount quotation, contact us on +4402038839057, email sales@insulationbee, or use Live Chat – we offer competitive Kingspan Rainscreen Insulation pricing across the UK.