Occasionally, a separating wall or floor won’t achieve the required level of sound insulation and this will be reported as a ‘fail’. With over 30 years experience in building acoustics, we will be able to diagnose the reason for the failure and recommend a cost-effective solution. Often, the reasons for failure are obvious to the test engineer in which case the advice will be given freely and without further charge. Sometimes, there are more technical issues which require detailed diagnosis and invasive investigation.
Our ‘expert witness’ investigations can be helpful where there is a dispute between the designer and the builder as to who is responsible for the failure.
The ANC holds a central database of the results of all tests carried out by ANC-Registered testers and this is presently showing a national average fail rate of just 3% overall.
What this doesn’t tell us, however, is that where there is a serious design fault, such as the use of a timber-joisted separating floor in a masonry cavity building, the fail rate at that development can be 100% and can cost tens of thousands of pounds to put right.
This is why we place such emphasis on the process of ‘expert intervention’.