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Knauf  |  SKU: 48514781348187

Knauf Rocksilk Rainscreen OSCB44 - All Thicknesses


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Standard: 5-10 Working Day Delivery

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Product Datasheets

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Things you should know about this product!

  • This product is sold by the pack
  • The amount of barriers in a pack depends on the thickness
  • This product is available in the following thicknesses: 100mm-125mm, 126mm-150mm, 151mm-175mm, 176mm-200mm, 202mm-225mm, 226mm-250mm, 251mm-275mm, 276mm-300mm, 301mm-325mm, 326mm-350mm, 351mm-375mm, 376mm-400mm, 401mm-425mm, 426mm-450mm

Description

Knauf Rocksilk® RainScreen OSCB44 is a horizontal cavity barrier made from rock mineral wool and shrink-wrapped with a reactive intumescent strip, designed for use in ventilated cavities up to 450mm. It forms part of a system with Rocksilk® RainScreen Slabs, providing up to 120 minutes of fire resistance integrity and 90 minutes of insulation (E120 I90).

Specifications

  • Material type
    Rock mineral wool

Key Features

  • Forms part of tested systems providing fire resistance for up to 120 minutes integrity and 90 minutes insulation (E120 I90), ensuring enhanced safety and compliance.
  • Fixing bracket included as standard, simplifying installation and ensuring secure attachment.
  • Reactive intumescent strip expands in the event of a fire to fill the residual cavity, providing additional fire protection.
  • Suitable for horizontal applications with a cladding outer leaf, offering versatility in various building designs.

Where to use

Rainscreen Facade Insulation: Knauf Rocksilk Rainscreen OSCB44 is specifically designed for rainscreen facade insulation, serving as an effective cavity barrier to provide robust fire protection. It helps prevent the spread of flames and smoke through the facade, enhancing building safety. Additionally, it offers thermal insulation, aiding in reducing heat loss and improving energy efficiency. The slab also provides good acoustic insulation, minimising noise transmission, and its water-resistant properties protect the building from moisture ingress.

Frequently asked questions

How does Knauf Rocksilk Rainscreen OSCB44 work? - This insulation board works by providing a thermal barrier that helps regulate the building's temperature, reducing heat loss in winter and heat gain in summer. Its dense composition also helps absorb sound and improve acoustic comfort, while its non-combustible nature enhances fire safety.
Where can Knauf Rocksilk Rainscreen OSCB44 be used? - Knauf Rocksilk Rainscreen OSCB44 is specifically designed for use in external wall systems, including cavity walls and rainscreen cladding systems. It is suitable for both new build and refurbishment projects in a variety of applications, such as residential buildings, commercial properties, and public sector projects like schools and hospitals.
What are the acoustic performance benefits of Knauf Rocksilk Rainscreen OSCB44? - The insulation board provides effective sound absorption, reducing external noise and improving indoor acoustic comfort.
Is Knauf Rocksilk Rainscreen OSCB44 fire resistant?
- Yes, Rocksilk Rainscreen OSCB44 is classified as non-combustible and meets rigorous fire safety standards. It does not contribute to the spread of fire, significantly enhancing the fire safety of the building.

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Material type
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Knauf Rocksilk Rainscreen OSCB44 - All Thicknesses

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