Iw01-02-Timber Stud Partition
Timber Stud Partition Walls
Iw01
Product*: Crown Acoustic Partition Roll
Description: Glass wool insulation
friction-fitted between timber studs
Iw02
Product*: Rocksilk Flexible Slab
Description: Rock mineral wool insulation
friction-fitted between timber studs
Advantages
- Crown Acoustic Partition Roll and Rocksilk Flexible Slab
improve acoustic performance to 40 Rw dB, meeting Building
Regulation requirements for dwellings in England and Wales
- Satisfies 40 Rw dB performance with a single layer of standard
plasterboard each side
- Minimises partition width
- Prevents hollow sound that can occur in partitions with empty
cavities
- The partition also provides a high degree of thermal
insulation, enabling a greater degree of comfort control throughout
the building
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Products
Crown Acoustic Partition Roll is a flexible,
resilient, roll of glass mineral wool.
Rocksilk Flexible Slab is a flexible stone mineral
wool slab designed for friction fitting.
Typical construction
A timber stud partition (minimum 63x38mm studs) infilled with
50mm of Crown Acoustic Partition Roll or 50mm Rocksilk Flexible
Slab with 12.5mm standard plasterboard each side meets the
requirements of the Building Regulations for a 40 Rw dB
partition.
The partition should be sealed with an acoustic sealant at its
perimeter and at all penetrations.
Installation
Construct the timber frame, applying a bead of acoustic sealant
to each piece of timber that is fixed to the surrounding structure.
Board out one side of the partition before inserting the
insulation.
50mm Crown Acoustic Partition Roll and Rocksilk Flexible Slab
are designed to friction fit between timber studs at 600mm centres.
50mm Crown Acoustic Partition Roll And Rocksilk Flexible Slab are
sufficiently rigid not to need supporting at the head of the
partition.
Alternatively, use 25mm Acoustic Partition Roll, friction fitted
between timber studs at 600mm centres and supported at the head of
the partition by means of a timber batten.
For maximum acoustic performance, fit all insulation tightly up
against the stud sides. Seal all gaps around the perimeter of the
plasterboard with acoustic sealant.
Performance
Acoustic performance
Table 93 shows typical sound reduction figures for a range of
timber stud partitions.
Fire performance
Crown Acoustic Partition Roll and Rocksilk Flexible Slab are
classified as Euroclass A1 to BS EN ISO 13501-1.
Density
- 25mm Crown Acoustic Partition Roll has a density of 19.5
kg/m3.
- 50mm Crown Acoustic Partition Roll has a density of 16
kg/m3.
- 50mm Rocksilk Flexible Slab has a density in excess of 10.00
kg/m3.
| Typical specification |
|
Crown Acoustic Partition Roll, 50mm thick*/ Rocksilk Flexible
Slab 50mm thick*, fixed between vertical studs. Insulation to fit
snugly between studs and at bottom of the structure to ensure that
there are no air gaps. Seal all gaps around the perimeter of the
plasterboard with acoustic sealant. (*Delete as appropriate)
Alternatively, consult the National Building Specifications
(NBS) based on Standard Version K10/125. It contains a set of
proprietary clauses, which are edited versions written by Knauf
Insulation.
|
Typical section
Table 93: Sound insulation of timber stud
partitions
| Solution |
Stud Size (mm) |
Facing |
Infill |
RwdB |
| Iw01 |
63x38 |
12.5mm standard plasterboard each
side
|
None |
35 |
| 63x38 |
12.5mm standard plasterboard each
side
|
50mm Crown Acoustic Partition Roll
|
42* |
| Iw02 |
63x38 |
12.5mm standard plasterboard each
side
|
50mm Rocksilk Flexible Slab
|
42* |