Building acoustics
Building acoustics: sound insulation with test data
Besides room acoustics, Acoustic Index lists building components with measured sound insulation: partition and system walls, ceilings, floor build-ups, suspended ceilings, doors, glazing and noise barriers. Every value comes from a test report to EN ISO 10140, EN ISO 10848 or EN 1793 and carries its source.
16 components with measured sound insulation
The key values
Weighted sound reduction index Rw
Single-number airborne sound insulation of a component in dB to ISO 717-1, measured in the laboratory to EN ISO 10140. Rw + Ctr accounts for low-frequency traffic noise. Higher is better.
Impact sound Ln,w and ΔLw
Ln,w is the weighted normalized impact sound pressure level of a floor (lower is better), ΔLw the impact sound reduction of a floor covering or floating floor (higher is better). Both to EN ISO 10140 and ISO 717-2.
Flanking transmission Dn,f,w
Weighted normalized flanking level difference of a suspended ceiling or facade between two rooms to EN ISO 10848. Decisive for privacy between offices under a continuous ceiling.
Noise barrier DLR and DLα
Airborne sound insulation (DLR, classes B1 to B4) and sound absorption (DLα, classes A1 to A5) of noise barriers to EN 1793, the basis of road and rail requirements.
Components with test data
All building-acoustics filters in the search| Product | Manufacturer | Component | Key value | More values |
|---|---|---|---|---|
| ThomTek Perilux noise barrier fence | ThomTek | Noise barrier & fence | DLR 26 dB · B3 | Rw 29 dB |
| ThomTek Perilux noise barrier wall | ThomTek | Noise barrier & fence | DLR 26 dB · B3 | Rw 29 dB |
| Multi-leaf system walls | Metecno Bausysteme GmbH | Partition & system wall | Rw 70 dB | Rw+Ctr 62 dB |
| LIGNO® Uni Q3 (wall) | LIGNOTREND Produktions GmbH | Partition & system wall | Rw 57 dB | Rw+Ctr 48 dB |
| LIGNO® Decke Q3 | LIGNOTREND Produktions GmbH | Floor & ceiling system | Rw 78 dB | Rw+Ctr 69 dB · Ln,w 37 dB |
| LIGNO® Rippe Q3 (floor) | LIGNOTREND Produktions GmbH | Floor & ceiling system | Rw 75 dB | Rw+Ctr 67 dB · Ln,w 37 dB |
| LIGNO® Rippe Q3 Akustik 196 mm | LIGNOTREND Produktions GmbH | Floor & ceiling system | Rw 69 dB | Rw+Ctr 60 dB · Ln,w 35 dB |
| LIGNO® Block Q3 Akustik 196 mm | LIGNOTREND Produktions GmbH | Floor & ceiling system | Rw 64 dB | Rw+Ctr 58 dB · Ln,w 45 dB |
| Metalit band raster and clip-in band raster system | Fural Systeme in Metall GmbH | Suspended ceiling (flanking) | Dn,f,w 56 dB | |
| Hipertec Wall Sound | Metecno Bausysteme GmbH | Sandwich & facade panel | Rw 36 dB | Rw+Ctr 32 dB |
| Hipertec Roof Sound | Metecno Bausysteme GmbH | Sandwich & facade panel | Rw 35 dB | |
| Metfiber Eco Wall Sound | Metecno Bausysteme GmbH | Sandwich & facade panel | Rw 35 dB | Rw+Ctr 31 dB |
| Hipertec Roof | Metecno Bausysteme GmbH | Sandwich & facade panel | Rw 32 dB | Rw+Ctr 29 dB |
| Hipertec Wall | Metecno Bausysteme GmbH | Sandwich & facade panel | Rw 32 dB | Rw+Ctr 29 dB |
| Metfiber Eco Wall | Metecno Bausysteme GmbH | Sandwich & facade panel | Rw 31 dB | Rw+Ctr 29 dB |
| Monowall | Metecno Bausysteme GmbH | Sandwich & facade panel | Rw 24 dB | Rw+Ctr 21 dB |
Filter by component type, minimum Rw, impact sound or noise barrier class.
Frequently asked questions
- What is the difference between Rw and R'w?
- Rw is the laboratory value of a component without flanking paths, R'w the in-situ value including flanking transmission. The values on this page are laboratory values (Rw); code verification applies safety margins and flanking corrections.
- What does Rw + Ctr mean?
- Ctr is a spectrum adaptation term for low-frequency noise such as road traffic. Rw + Ctr is usually 3 to 8 dB below Rw and is the governing figure when traffic noise sets the requirement.
- Where do the values come from?
- From test reports of accredited laboratories provided by the manufacturer, for example ift Rosenheim or MFPA Leipzig. Each value on the product page names the laboratory, report number and test build-up; datasheet values are labelled as such.
- How do I find an equivalent component?
- Use the search with the building-acoustics focus and filter by component type and minimum Rw. The result list shows the key value per product, the product page the measured variants with their build-up.