Compliance with this standard is mandatory under law.
There are four acoustic requirements set out in the document:
Requirement E1 relates to the sound insulation performances of party walls and floors.
Requirement E2 relates to “[…] internal walls between a bedroom or room containing a water closet and other rooms and internal floors.”
Requirement E3 specifies the acoustic environment in common multi-residential spaces, such as corridors, stairwells and entrance halls. This is to control the level of noise that could disturb people in their apartments from others moving around the building.
Requirement E4 is not applicable to residential properties, and applies only to school buildings, to ensure that the correct standards are used.
Compliance with the standards is to be demonstrated by undertaking acoustic testing when construction is almost complete. For residential properties a minimum testing sample of 10% of the number of dwellings is required, for schools a minimum sample of 25% of ‘noise sensitive spaces’ (as defined in BB93
) is required.