225mm Rockwool Rainscreen Duo Slab

Introducing 225mm Rockwool Rainscreen Duo Slab Cladding Insulation, a premium stone wool solution engineered for ventilated cladding systems and sealed applications including curtain walling. Featuring Dual Density technology, this 225mm slab delivers a robust outer layer for secure fixture attachment, paired with a flexible inner core that accommodates substrate variations.

Once fitted, the reinforced outer surface combined with factory-applied water-repellent treatment provides superior protection against rainfall penetration during the construction phase. This adaptable 225mm Rainscreen Duo Slab readily accepts brackets and architectural details, and when positioned edge-to-edge, adjacent slabs lock together seamlessly, creating an unbroken thermal barrier that significantly reduces energy loss through gaps.

Product specification

• Model: 225mm Rockwool Rainscreen Duo Slab
• Thickness: 225mm
• Width: 1200mm
• Length: 600mm
• Board Coverage: 0.72m2
• Pack Coverage: 1.44m2
• Pack Quantity: 2
• 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 guarantees product quality and dependable performance.
2. Non-combustible Euroclass A1 rating provides exceptional fire protection.
3. Independently verified acoustic properties deliver reliable sound insulation performance.
4. Moisture-resistant yet vapour-permeable, safeguarding structural durability.
5. 225mm Stone wool insulation maintains dimensional stability over extended service life, proven through 55 years of field performance.
6. Sustainable choice: fully recyclable and reprocessable, minimising waste disposal, with zero ODP (Ozone Depletion Potential) and GWP (Global Warming Potential).
7. 225mm Rainscreen Insulation

Fire-safe insulation designed for facade systems

225mm Rockwool Duo Slab is a BBA-approved insulation product that combines thermal performance with independently tested acoustic benefits.

APPLICATIONS

225mm RainScreen Duo Slab is suitable for use on the following construction types:

• Steel frame, timber frame or masonry walls in conjunction with a cladding system;
• Steel frame or timber frame with a masonry outer leaf

Additional Benefits of 225mm Rockwool Rainscreen Duo Slab

• Water Repellent and Breathable: The 225mm Rainscreen Duo Slab combines water resistance with breathability, preserving long-term building performance.
• Independently Tested Acoustic Benefits: Laboratory testing confirms the 225mm Rainscreen Duo Slab achieves significant noise reduction, with typical system results reaching Rw 62 dB for airborne sound attenuation.
• Environmentally Friendly: 225mm ROCKWOOL insulation is formulated without ozone-depleting substances (ODP) or greenhouse gases (GWP), supporting environmental responsibility.
• Improved Resistance to Rain Ingress: The denser outer layer of the 225mm Rainscreen Duo Slab, combined with a factory-applied hydrophobic coating, substantially improves weather protection during construction.

Certification

• Fire Rating: Euroclass A1 non-combustible – the highest fire safety classification. Tested to EN 13501-1 standards.
• BBA Approved: Certified by the British Board of Agrément (BBA), confirming quality and performance standards.

Additional Offerings

If you're searching for a specific product not currently listed, contact us and we'll work to locate it for your project. Our range extends well beyond insulation, covering comprehensive building material solutions.

More Information on 225mm Rockwool Rainscreen Duo Slab

• Manufaturer Link: Rockwool Duo Slab
• Rockwool 225mm Rainscreen Duo Slab delivers high-performance thermal and acoustic solutions for diverse applications.
• Browse our Rockwool Insulation collection and refine by thickness or coverage using the left-hand filters. For product suitability advice or bulk pricing requests, contact us on +4402038839057, email sales@insulationbee or use Live Chat – we offer competitive Rockwool Stone Wool Insulation pricing across the UK.