Technical Booklet G Resistance to the Passage of Sound·Page 91·4.9
Stair treatment 1 – Stair covering and independent ceiling with absorbent material
Where a timber stair performs a separating function, this treatment uses stair covering to reduce impact sound and an independent ceiling with absorbent material to control airborne sound transmission. The effectiveness depends on stair mass, ceiling isolation, airtightness of any enclosure, and controlling flanking transmission.
To be used where a timber stair performs a separating function. The resistance to airborne sound depends mainly on the mass of the stair, the mass and isolation of any independent ceiling and the airtightness of any cupboard or enclosure under the stairs. The stair covering reduces impact sound at source.
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