Technical Booklet G Resistance to the Passage of Sound·Page 21·1.18
Sub-grouping for dwellings with unfavourable features
Dwellings or residential rooms with unfavourable features, such as flats or maisonettes with large areas of flanking wall without a window at the gable end, should not be included in a group with other units but should form their own separate sub-group(s).
Some dwellings or rooms for residential purposes may be considered to have unfavourable features: an example could be flats or maisonettes with large areas of flanking wall without a window at the gable end. It would be inappropriate for these to be included as part of a group and these should form their own sub-group(s).
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