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Knauf Shaftwall Performance Table

1 Maximum heights and fire resistance:

Maxiumum heights – calculated based on a limiting deflection of L/240 at 200 Pascals (0.2kN/m2).

The maximum heights related above is for fire resistance of system to meet project requirements of BS 476: Part 22: 1987 only.

For maximum heights in relation to meeting project requirements of BS EN 1364-1:2015, please consult Technical Services.

2 Acoustic sound reduction dB (Rw)

Systems tested or assessed in accordance with BS EN ISO 10140-1:2010+A2: 2014.

* Knauf Insulation Acoustic Roll

** Knauf Performance Plus is recommended as outer layer for areas requiring fire fighting lift shafts

Note: Systems for both fire resistance and sound insulation performances are for imperforate partitions, incorporating plasterboard with all outer joints taped and filled, in accordance with Knauf recommendations.

Knauf A1 Smokeshaft - Triple Boarded
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Knauf Shaftwall - Double Boarded
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