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Separating Wall Solution

A separating wall is defined as a wall separating one dwelling from another.

Approved Document E requires all separating walls to provide a minimum level of airborne sound reduction between dwellings and rooms used for residential purposes.

Wherever walls are formed to separate houses, apartments, hotel rooms or communal areas, a separating wall treatment will be required.

Part E Acoustic Sound Requirement
New Build
DnT,w+Ctr dB
45
Refurbishment
DnT,w+Ctr
43

Separating walls are subject to Pre-Completion Testing to demonstrate compliance to Approved Document E.

Ctr Adjusting Factor
Low frequency sound from televisions and hi-fi’s is often present between adjoining properties in a separating wall application.

Therefore a correction factor is taken into account known as ‘+ Ctr’. This ensures low frequency noise is reflected in test data and must be considered when selecting a separating wall treatment.
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