There are 2 different types of noise tested for by 2 different types of tests.
• Airborne
• Impact
Airborne: This is noise that is airborne, music, conversation etc.
Impact: This is the noise created by noise created against a surface, footsteps or banging.
Airborne noise is tested through walls and floors, and impact noise is tested through floors only.
Buildings are usually empty when tested, as it makes testing a lot easier and affords a truer, better result. Any noise created within the building can be picked up by the meter and affect the final result of the sound test.
Most builders will plan the sound test in the program of works to take place just before the property is handed over to a client or occupation.
The building should be tested as soon as it is complete, as all the final finish has been completed and the best chance of a successful result is possible. Once the property becomes occupied and lived in, the fabric of the building will change.
Sound testing is carried out to comply with Part E of the building regulations. Sound tests must be carried out on new buildings and a building conversion created by a change of use.
The number and type of testing (Airborne & Impact) will depend on the building type and location.