125mm Rockwool Rainscreen Duo Slab

125mm Rockwool Rainscreen Duo Slab is a premium stone wool insulation solution engineered for ventilated cladding systems and sealed curtain walling applications. Built with Dual Density technology, this 125mm slab features a robust outer layer for secure fixture attachment, paired with a flexible inner core that accommodates substrate variations and surface imperfections.

The denser outer surface, combined with a factory-applied water-repellent coating, provides superior protection against rain penetration during the construction phase. This 125mm Rainscreen Duo Slab readily accepts brackets and architectural details, and when positioned edge-to-edge, adjacent slabs lock together to create an unbroken thermal barrier, significantly reducing energy loss through thermal bridging.

Product specification

• Model: 125mm Rockwool Rainscreen Duo Slab
• Thickness: 125mm
• Width: 1200mm
• Length: 600mm
• Board Coverage: 0.72m2
• Pack Coverage: 2.88m2
• Pack Quantity: 4
• Pallet Quantity: 12
• Density: 60kg/m3
• Weight/m2: 3kg
• Thermal conductivity: 0.034 W/mK (< 90mm) / 0.035 W/mK (≥90mm)R-Value: 1.43m2K/W
• Fire Rating (Reaction to Fire): A1(Non-combustible)
• Compliance: BS EN 13162, ISO 14001
• Water vapour resistance: 5.9 MNs/gm
• Insulation Material: Stone wool insulation
• Manufacturer: Rockwool Rainscreen
• Applications: Acoustic, External Wall Insulation, Rainscreen Board, Wall

Key Features

1. BBA approval confirms quality standards and dependable performance.
2. Euroclass A1 non-combustible certification delivers outstanding fire safety.
3. Independently verified acoustic performance provides effective sound insulation capabilities.
4. Breathable and water-resistant design protects structural integrity.
5. 125mm Stone wool insulation maintains dimensional stability for over 55 years of service life.
6. Sustainable choice: fully recyclable and reprocessable, with zero ODP and GWP ratings, minimising environmental impact.
7. 125mm Rainscreen Insulation

Fire-safe insulation designed for facade systems

This BBA-approved insulation product combines thermal performance with independently tested acoustic benefits for comprehensive facade protection.

APPLICATIONS

125mm RainScreen Duo Slab suits the following construction methods:

• Steel frame, timber frame or masonry walls paired with cladding systems;
• Steel frame or timber frame construction with external masonry cladding

Additional Benefits of 125mm Rockwool Rainscreen Duo Slab

• Water Repellent and Breathable: The 125mm Rainscreen Duo Slab balances moisture resistance with vapour permeability, safeguarding building performance.
• Independently Tested Acoustic Benefits: Laboratory testing confirms the 125mm Rainscreen Duo Slab delivers substantial noise reduction, achieving airborne sound attenuation ratings up to Rw 62 dB in typical installations.
• Environmentally Friendly: 125mm ROCKWOOL insulation contains no substances with ozone depletion or global warming potential, supporting sustainable building practices.
• Improved Resistance to Rain Ingress: The high-density outer layer, enhanced by factory-applied water-repellent treatment, strengthens weather protection during construction phases.

Certification

• Fire Rating: Euroclass A1 non-combustible – the highest fire resistance classification. Tested to EN 13501-1 standards.
• BBA Approved: British Board of Agrément certification validates product quality and performance reliability.

Additional Offerings

Unable to locate your specific product? Get in touch and we'll source it for your project. Our range extends well beyond insulation to cover all your building material requirements.

More Information on 125mm Rockwool Rainscreen Duo Slab

• Manufacturer Link: Rockwool Duo Slab
• Rockwool 125mm Rainscreen Duo Slab delivers high-performance thermal and acoustic solutions across diverse applications.
• Explore our complete Rockwool Insulation collection and refine by thickness or coverage using the filters on the left. For project-specific advice or bulk pricing enquiries, contact us on +4402038839057 , email sales@insulationbee or use Live Chat – Competitive UK Rockwool Stone Wool Insulation Pricing.