Large Cavities

Large Cavities Insulation South Africa
Large Cavities
Knauf Insulation Large Cavity Insulation Rock Mineral Wool


Every building must be designed and constructed in such a way that in the event of fire, the spread of smoke and flame within concealed cavities is inhibited.

Our Rock Mineral Wool fire barriers are used to sub divide cavities to prevent smoke and flame from bypassing fire-resisting walls and partitions, and are required to be placed above fire resisting partitions.

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Why Mineral Wool?

  • Our wired mattress solutions are non-combustible with a melting point in excess of 1000°C, providing up to 1 hour fire protection.

  • Fire barrier mattresses are flexible, allowing fixing to the soffit using a single bracket.

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We offer the best insulation solution for each application

At Knauf Insulation, we are committed to helping our customers meet the increasing demand for energy efficiency. Browse our other application pages to find out more.