Estimated impact-sound attenuation ΔLw (dB) — ISO 12354-2, by screed weight (kg/m²)
| 85 | 100 | 115 | 130 | 145 | 160 | 175 | 190 | 200 | |
|---|---|---|---|---|---|---|---|---|---|
| 3 mm | 17.8 | 18.8 | 19.7 | 20.5 | 21.3 | 21.9 | 22.5 | 23.0 | 23.3 |
| 5 mm | 21.1 | 22.1 | 23.0 | 23.8 | 24.6 | 25.2 | 25.8 | 26.3 | 26.7 |
| 10 mm | 25.7 | 26.8 | 27.7 | 28.5 | 29.2 | 29.8 | 30.4 | 31.0 | 31.9 |
Need help choosing the right solution? Our acoustic consultants will recommend, supply and install the right system for your project.

High-performance, flexible, mass-loaded noise barrier with superior transmission loss, made from non-reinforced composite polymers with lead-free metals and bitumen fillers. Provides comfort, privacy and protection from external noise in existing structures.

A complex material for sound absorption, soundproofing and impact-noise insulation, made from recycled flexible polyurethane foams bonded with polyurethane glue.

Closed-cell foam for impact-sound insulation in floating concrete floors. Cross-linked expanded polyethylene (≈28 kg/m³) in rolled sheet form with excellent deflection and rebound for cost-sensitive projects.