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you will find information on specific products within our range.
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Crown Cavity Barriers are manufactured from a continuous length of non-combustible glass mineral wool which is compressed within a resilient polythene sleeve incorporating two flanges designed for ease of fixing.For use in firestopping and noise reduction applications in cavity walls.
This polythene sleeve is colour-coded to suit a variety of cavity widths from 50mm to 100mm and eliminates the need for weather protection during installation.
The barriers are 1200mm long and can be used in both vertical and horizontal applications, and are available in two standard depths (100mm and 300mm).
100mm barriers are used for normal fire stopping and noise reduction applications. 300mm barriers are used where higher performance levels are specified and at party wall / external wall cavity junctions. |
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Crown Cavity Barriers are engineered to prevent the spread of smoke and fire through walls, floors and cavities in timber frame, metal frame and masonry buildings. They are also suitable for reducing flanking noise transmission in these concealed cavities.
The use of the correct size of Crown Cavity Barrier is essential. Crown Cavity Barriers are designed to compress to a tight fit in cavities and in the event of fire breaking into the cavity, Crown Cavity Barriers do not rely on the polythene flanges to hold them in place, but on their compression between the inner leaf and external brickwork or blockwork.
It is, therefore, essential to specify the Crown Cavity Barrier by reference to the actual constructed cavity width. In vertical applications, both flanges of the Crown Cavity Barrier should be fixed to the inner leaf.
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- Meets Building Regulation requirements for both fire and acoustics
- Simple to install and fix due to flanges on all thicknesses
- Easy identification by colour coded polythene for stockist and contractor
- Dimensionally stable and robust
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Fire Performance
The mineral wool in Crown Cavity Barriers is classified as Euroclass A1 to BS EN ISO 13501-1.
Acoustic Performance
Crown Cavity Barriers meet the generic description for cavity closers and will therefore ensure compliance with Part E and Robust Details in timber frame and masonry constructions. |
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