Acoustic test results CircoFloor

Compare the sound reduction of different CircoFloor structures and discover the most important insights.

Substrate: 140 mm heavy standard floor = solid, reinforced concrete slab

CircoFloor with long legs - Sample 1

System height: 182 mm
Placement: +7 extra legs/m²
Filling: cork granules
Plating: OSB 18 mm

26dB ΔL_w

CircoFloor with long legs - Sample 2

System height: 182 mm
Filling: cork granules
Plating: OSB 18 mm

28dB ΔL_w

CircoFloor with short legs - Sample 3

System height: 122 mm
Filling: cork granules
Plating: OSB 18 mm

26dB ΔL_w

CircoFloor with short legs - Sample 4

System height: 122 mm
Filling: cork granules
Acoustics: felt pads under the adjustment screws
Plating: OSB 18 mm

29dB ΔL_w

CircoFloor with short legs - Sample 5

System height: 122 mm
Filling: EPS
Plating: OSB 18 mm

26dB ΔL_w

CircoFloor with short legs - Sample 6

System height: 122 mm
Filling: EPS
Plating: Fermacell 2e22 (2x12.5mm)

27dB ΔL_w

CircoFloor with short legs - Sample 7

System height: 122 mm
Filling: EPS
Plating: Fermacell 2e26 (2x12.5mm + felt)

30dB ΔL_w

Suppose: your existing floor has a contact sound level of L_n,w = 78 dB.
With this CircoFloor construction of test 7 you drop to 48 dB.
(Based on a sound reduction of 30 dB ΔL_w. The lower the L_n,w, the quieter the room.)

Key insights

Optimal amount of support legs can the damping with +2 dB improve (Test 2 vs 1).

Higher installation height (182 mm) provides an additional +2 dB noise reduction (Test 2 vs 3).

Felt under legs adds +3 dB add extra cushioning (Experiment 4).

EPS performs equivalent to cork (26 dB, Test 3 & 5).

Fermacell 2e22 adds +1 dB damping compared to OSB 18 mm (Experiment 6).

Fermacell 2e26 + vilt offers the highest profit with +4 dB (Experiment 7).

The acoustic performance achieved by the CircoFloor system is among the absolute best in the dry floor construction market.

With sound reductions of up to 30 dB ΔL_w, CircoFloor scores exceptionally high—even compared to traditional systems.

In concrete terms, this means: more living comfort and less noise pollution, for both new construction and renovation.

Do you want to achieve the highest possible acoustic dampening (+30dB ΔL_w)?
Install CircoFloor at a 20nbsp;cm height, with felt under the adjustment screws, fill with cork granules and plate with Fermacell 2e26.
This way you get the absolute maximum out of your floor!