The sound solutions given in this section are only applicable to Austral Bricks NSW products. Bricks that are made using different manufacture techniques and raw materials will have different levels of acoustic performance.
The tables below list constructions using the Dry Press series of brick. Two tables are available showing results (in order of improving performance) for constructions using:
Test certificates are available on request. Sound or acoustic performance is measured by the weighted sound reduction index (Rw). The Rw value will increase as the acoustic performance of a material or construction improves. For further information on acoustic performance and the requirements of the building code, refer to either:
| Dry Press Sound Solutions* - Single Skin |
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Send Side:
No finish
Receive Side:
No finish
Discontinuous Construction: No
Wall Thickness: 110mm
Rw45 (-1;-4)
Rw = 45
Rw + Ctr = 41
ATF Report 1389
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Send Side:
12mm render
Receive Side:
12mm render
Discontinuous Construction: No
Wall Thickness: 134mm
Rw52 (-1;-5)
Rw = 52
Rw + Ctr = 47
ATF Report 1393
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Send Side:
13mm plasterboard directly fixed
Receive Side:
13mm plasterboard screw fixed to resilient mounted furring channels, with insulation
Discontinuous Construction: No
Wall Thickness: 177mm
Rw56 (-3;-9)
Rw = 56
Rw + Ctr = 47
ATF Report 1391
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Send Side:
13mm plasterboard directly fixed
Receive Side:
13mm plasterboard screw fixed to 70mm x 30mm timber studs at 600mm centres, 20mm from wall, with insulation
Discontinuous Construction: Yes
Wall Thickness: 226mm
Rw + Ctr ≥ 50
BCA Deemed to Comply
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Send Side:
13mm plasterboard directly fixed
Receive Side:
13mm plasterboard screw fixed to 64mm steel stud at 600mm centres, 20mm from wall, with insulation
Discontinuous Construction: Yes
Wall Thickness: 150mm
Rw + Ctr ≥ 50
BCA Deemed to Comply
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*These acoustic results should be used in conjunction with the specific details given in the test certificates or BCA deemed-to-satify descriptions.
| Dry Press Sound Solutions* - Cavity Wall |
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50mm cavity
Send Side:
No finish
Receive Side:
No finish
Discontinuous Construction: Yes
Wall Thickness: 270mm
Rw53 (-1;-3)
Rw = 53
Rw + Ctr = 50
ATF Report 1174
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50mm cavity, with insulation
Send Side:
No finish
Receive Side:
No finish
Discontinuous Construction: Yes
Wall Thickness: 270mm
Rw + Ctr ≥ 50
BCA Deemed to Comply
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40mm cavity
Send Side:
10mm plasterboard directly fixed
Receive Side:
10mm plasterboard directly fixed
Discontinuous Construction: Yes
Wall Thickness: 280mm
Rw54 (-1;-4)
Rw = 54
Rw + Ctr = 50
ATF Report 1463A
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50mm cavity
Send Side:
13mm render
Receive Side:
13mm render
Discontinuous Construction: Yes
Wall Thickness: 296mm
Rw55 (-1;-4)
Rw = 55
Rw + Ctr = 51
ATF Report 1175
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*These acoustic results should be used in conjunction with the specific details given in the test certificates or BCA deemed-to-satify descriptions.