Acoustics
Hush solve a failing sound test
When developers of a residential development in St Leonards on Sea were struggling to achieve compliance with UK Building Regulations, they turned to Hush Acoustics for assistance.
The source of the problem in the development was a separating wall between two bedrooms, which was a timber stud wall with a thickness of 170mm. One bedroom measured 37m3 and the other was 29m3 in size. It is also worth noting both bedrooms had a screed laid over a concrete floor.
Engineers carried out the first sound test on the separating wall to determine acoustic compliance. The first airborne sound insulation sample test was carried out with no floor covering, and the result was DnTw+Ctr 31dB.
Levels of flanking transmission were quite significant and it was discovered sound was passing under the separating wall via the floor screed.
After looking at all of the details of the development and sound test results, Hush found a solution to the problem in the form of Hush Mat 15. This is an acoustic rubber matting which is simple to lay and provides excellent sound absorption levels, The Hush Mat 15 was laid over the floor screed in both rooms.
The sound test was then repeated and the result of the second test was DnTw+Ctr 44dB. Although this reading would be an average result in most other build projects, the fact that the Hush Mat 15 had improved the sound proofing levels at the property from a poor DnTw+Ctr 31dB demonstrates the effectiveness of the acoustic underlay as a solution to flanking transmission sound sources.
Importantly, the residential development had now achieved compliance with UK Building Regulations Approved Document E (England & Wales).
Hush Mat 15 is a uniquely engineered acoustic rubber matt with high mass levels, which helps to reduce impact, airborne and flanking transmission sound levels.
Hush Acoustics has been involved in the design and manufacture of sound reducing products for over 30 years and has extensive experience in reducing noise levels within residential developments.
HUSH (UK) LIMITED
TEL: 0151 933 2026 40
WWW.HUSHACOUSTICS.CO.UK
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