Sound-absorbing floors

Sound-absorbing floors from DUOFOR - Stable like a concrete floor

Floors with hard composite ceilings have high impact noise. Duofor offers a floor solution for high sound insulation comfort. The insulation values reach the same or considerably better values than a 200 mm concrete floor.
A sound-insulating floor often has a characteristic airborne noise index Ilu (k) * of ≥ 0 dB (DNT, A, k = 52 dB) and a footfall sound insulation index Ico * of ≥ 5 dB (LNT, A ≤ 54 dB (A).  

Ceiling on beam layers

System floors, consisting of Duofor® Dovetail Plates and Duofor DTS-G Sound Insulation Strips, achieves a typical airborne sound index Ilu (k) of +3 dB (DNT, A, k = 55 dB) and an impact sound insulation index Ico of + 6 dB on an existing wooden construction (LNT, A = 53 dB (A).Sound-absorbing floors from DUOFOR - Stable like a concrete floor


Ceiling under the beam layers 

In case of a wooden ceiling construction with boards and gypsum plaster boards, the maximum sound-absorption index Ilu (k) is -10 dB (DnT, A, k = 42 dB) and the impact sound index Ico is -20 dB (LnT, A = 79 dB (A)). This is ultimately not a soundproofing floor. Duofor® Dovetail Plates on such a construction achieve an airborne noise index (k) of +6 dB (DNT, A, k = 58 dB) and an impact sound insulation index Ico of +10 dB (LNT, A = 49 dB (A). This floor construction achieves additional sound insulation as well as sound proofing.

* The 'old' Ilu (k) characteristic airborne insulation index is simply based on the 'new' index with the formula Ilu; k = DnT, A, k - 52. The rule here is that the higher the value, the better the sound insulation. * The 'old' insulation index for impact sound insulation is easily calculated using the 'new' index with the formula Ico = 59 - LNT, A. The rule here is that the lower the value, the better the impact sound insulation. Read more about DTS-G Sound Insulation Strips, the new generation of support strips, and how they contribute to sound-insulating floors.