Impact Noise: is the sound created by noise against a surface, footsteps, etc. Impact noise is tested only through floors. 

The sound travels through the floor as a vibration. The sound is a wave of energy, and as it hits the surface, it is turned into a vibration. That vibration makes its way through all the hard surfaces that come in contact and come out the other side as an airborne sound. The test is carried out by placing a tapping machine on the floor to be tested, and measurements taken from beneath the floor. 

To stop the noise, the floor above and the ceiling below must be complete. Any holes or gaps around or in should be filled. The area between the floor and ceiling should be made up of enough resistance to absorb any noise.  

Acoustic engineers can provide the exact make up of this area to achieve the rating required. Care should also be taken on any pipes or steel beams that may run between the floors and walls, as they transmit and transfer sound. 

Buildings are usually empty when they are 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.  

If you’d like more information then don’t hesitate to call ATSPACE and speak to a member of our friendly team.