Impact sound insulation

Illustration of how sound from footsteps generate noise.

Impact sound insulation relates to the reduction of footstep sound from people walking on a floor structure. It is determined by the impact sound level in the room below.

A suspended ceiling system can be used to improve the impact sound insulation and therefore reduce the impact sound level. Improvements are always linked to a specific type of floor structure.

Impact sound level values

Improvement of laboratory value ΔL_n,waccoring to ISO 140-8 and ISO 717-2

Improvement	Product
9-11 dB	Focus
14-15 dB	Master
15-18 dB	Combison Uno / Combison Duo / Combison dB
22-28 dB	Combison Uno / Combison Duo / Combison dB + Combison XR

The improvements are linked to a homogenous concrete floor of normal thickness (160-200 mm) and with a plastic carpet.