Technical Booklet G Resistance to the Passage of Sound·Page 86·3.102
Resilient layer specification
Specifies the minimum thickness and density requirements for mineral wool resilient layers in floor construction, with options for paper facing and additional perimeter support.
The resilient layer specification is –
mineral wool, minimum thickness 25 mm, density 60 to 100 kg/m3;
the mineral wool may be paper faced on the underside.
Note – The lower figure of density for the resilient layer gives a higher resistance to impact sound but a "softer" floor. In such cases additional support can be provided around the perimeter of the floor by using a timber batten with a foam strip along the top attached to the wall.
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