Precast concrete floor
A Separating floor is defined as a floor that separates adjoining dwelling houses, flats or rooms used for residential purposes. The Part E requirement for separating floors is subject to both airborne and impact sound regulations. Minimum airborne sound of 45dB is required (plus additional Ctr correction factor for low frequency noise). In addition separating floors also require a maximum 62dB impact sound insulation. Rockfloor will assist in achieving this performance requirement.
Flanking sound
A major cause of reduced acoustic performance in separating floors is due to Flanking paths via the surrounding structure rather than a direct path through the floor.
Good practice detailing at the design stage, especially at key junctions, together with good workmanship will minimise this effect and optimise performance levels. Guidelines of good practice detailing at key junctions are provided throughout the new Approved document E.
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