Knauf A1 Smokeshaft
Knauf Smokeshaft system is a one-sided construction used to form enclosures around smokeshafts. The system is constructed from the A1 rated (EN:13501-1) Knauf Fireboard in order to comply with Approved Document B for England
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.
We provide installation procedures, application details and performance data for our systems. Declarations of Performance (DoPs), Material Safety Data Sheets (MSDSs) and others can be found on our product pages. If you can't find the downloads you're looking for, please contact our Technical Services team and they will be happy to help.