Acoustic test results CircoFloor
Compare the sound reduction of different CircoFloor structures and discover the most important insights.
CircoFloor with long legs - Sample 1
- System height: 182 mm
- Placement: +7 extra legs/m²
- Filling: cork granules
- Plating: OSB 18 mm
CircoFloor with long legs - Sample 2
- System height: 182 mm
- Filling: cork granules
- Plating: OSB 18 mm
CircoFloor with short legs - Sample 3
- System height: 122 mm
- Filling: cork granules
- Plating: OSB 18 mm
CircoFloor with short legs - Sample 4
- System height: 122 mm
- Filling: cork granules
- Acoustics: felt pads under the adjustment screws
- Plating: OSB 18 mm
CircoFloor with short legs - Sample 5
- System height: 122 mm
- Filling: EPS Renewworks
- Plating: OSB 18 mm
CircoFloor with short legs - Sample 6
- System height: 115 mm
- Filling: EPS Renewworks
- Plating: Fermacell 2e22 (2x12.5mm)
CircoFloor with short legs - Sample 7
- System height: 116 mm
- Filling: EPS Renewworks
- Plating: Fermacell 2e26 (2x12.5mm + felt)
Laboratory airborne sound insulation (RA,50 = Rw + C50-3150): OSB tests 1–5 reached class B (55–58 dB), Fermacell tests 6–7 class A (60 and 59 dB), and the bare 140 mm concrete slab class C (53 dB).
These laboratory classes and impact-sound values do not establish a class or sound level in a completed building. An acoustics specialist must assess the base slab, flanking walls and junctions for each project.
Key insights
The seven tested assemblies achieved 26–30 dB ΔLw in the laboratory. Some tests differ in several components, so the differences do not establish the effect of any single material.
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