Knauf Ventshaft is a family of non-loadbearing, laminated fire-rated wall systems developed primarily for use as enclosures around minor floor penetrations, vent and service risers, for use in commercial and residential building construction.
The Ventshaft system is ideal for use in hotels and multi-storey residential developments where small service shaft penetrations, air return and exhaust risers between levels are required.
The system can accommodate a wide range of fire-rated penetrations and provides a simple construction solution for the designer.
BENEFITS
- No wet trades are required
- Lightweight and space efficient
- Cost effective and versatile
- Fast and easy to construct from one side, eliminating the need for access from the shaft side
- Permits easy inclusion of services and penetrations such as power points, dampers and pipes
- FRL up to -/120/120 in both directions
Features
Knauf Ventshaft systems have been fire tested at CSIRO’s laboratory at North Ryde in Sydney and subsequently assessed by BRANZ.
Knauf Ventshaft systems comply with the structural strength and serviceability requirements outlined in NCC Specification 6 ‘Structural Tests for Lightweight Construction’, with testing carried out at Knauf NATA-accredited laboratory for this purpose.
Tested at the CSIRO acoustic laboratories, the primary configurations of Knauf Ventshaft systems satisfy NCC acoustic provisions of RW + Ctr 25 for risers in a non-habitable space. A separate steel or timber stud with cavity insulation (KI 50G11) can be adopted in front of Ventshaft VS systems and spaced 20mm from the face to comply with the NCC provisions of RW + Ctr 40 for risers in habitable spaces.
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