If04-Concrete Beam & Block Floor
Product: Crown Acoustic Partition
Roll
Description: Glass wool insulation fitted
between timber joists
Advantages
- High mass of concrete floor units provides good acoustic
performance
- Mineral wool in void absorbs sound and improves acoustic
performance
- The independent ceiling provides good acoustic isolation and
space for services
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Products
Crown Acoustic Partition Roll is made from
glass mineral wool and formed into rolls which are lightweight,
flexible, resilient and noncombustible.
Typical construction
Concrete beam and block floor with a minimum mass per unit area
of 220kg/m2 finished with bonded 40mm cement:sand
screed.
Plasterboard ceiling with a minimum mass of 10kg/m2 fixed to the
Knauf Drywall C-Form II ceiling system with Crown Acoustic
Partition Roll filling the ceiling void.
Contact the manufacturer of the beam and block floor system to
determine the correct method of mechanically fixing channels to the
beams.
Performance
Acoustic performance
The construction complies with Internal floor type B in Approved
Document E2 and employs a metal framed ceiling system with 10
kg/m2 plasterboard and the void filled with Crown
Acoustic Partition Roll. The density of the insulation is required
to be a minimum of 10kg/m3.
Fire performance
Crown Acoustic Partition Roll is classified as Euroclass A1 to
BS EN ISO 13501-1.
Density
- 25mm Crown Acoustic Partition Roll has a density of 19.5
kg/m3.
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Typical specification
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Crown Acoustic Partition Roll, 25mm thick, to be supported by
the horizontal members of the Knauf Drywall C-Form II ceiling
system. The plasterboard ceiling to be as specified by the
designer.
Alternatively, consult the National Building Specifications
(NBS) based on Standard Version. It contains a set of proprietary
clauses, which are edited versions written by Knauf Insulation.
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