APT Sound Testing has been undertaking sound insulation testing in London for almost two decades, so we have a massive amount of experience in dealing with the acoustics on all types of projects from house conversions, to the largest new build developments.
Pre completion sound testing for Approved Document E has been a mandatory requirement since July 2003. All new build properties and conversions which were built after this date require 10% of each party wall/floor construction type to be tested. Sound insulation Testing is to be carried out between pairs of rooms separated by party walls and/or floors. In is usual to test between living rooms and bedrooms, which are classed as the two main habitable rooms; however, other rooms can be used if this is not possible.
Airborne Sound Insulation Testing
The sound test procedure involves setting up a noise source in a room on one side of the party wall or floor and measuring the noise on both sides of the partition. Airborne sound testing may also be required between horizontally and vertically separated pairs of rooms.
The sound tests are undertaken by using a sound source, amplifier and loudspeaker to generate a high noise level in one room (the source room). Noise measurements are then taken in both the source and receiver rooms using a prescribed number of source and microphone positions. The background levels in the receiver room are measured and the reverberation time in the receiver room is also measured. From the results, the airborne sound insulation (DnT,w + Ctr) is calculated and compared to the requirements of Approved Document E of Building Regulations.
Impact Sound Insulation Testing
For vertically separated rooms, Impact sound testing may also be required. This sound test is undertaken using a tapping machine which drops a series of weights onto the floor of the upper room. The noise level in the lower (receiver) room is measured for a prescribed number of source and microphone locations. The background levels in the receiver room are measured and the reverberation time in the receiver room is also measured. From the results, the impact sound insulation (LnT,w) is calculated and compared to the requirements of Building Regulations Part E.
UKAS Accredited sound testing.
Our sound test engineers carry all the latest Norsonic testing equipment, which are class one rating and all of our acoustic testing/sound testing, is completed to a strict quality controlled standard. We provide full UKAS Accredited sound testing.
To find out more about our acoustic design service and/or UKAS accredited sound insulation testing in London, please visit our website at www.aptsoundtesting.co.uk, alternatively please email us at firstname.lastname@example.org or call us on 01525 303905 to discuss your requirements with one of the team.