Fraunhofer Institute for Building Physics IBP
Flanking sound transmission via suspended ceilings
Acoustics
Testing for Your Acoustic Requirements
Our suspended ceiling test facility (P5) enables the determination of the longitudinal sound insulation of suspended ceilings in accordance with the standard DIN EN ISO 10848-2:2018. With flexible configuration options, such as a ceiling that is infinitely height-adjustable, we offer optimum adaptation to individual testing requirements - without the need for structural modifications. A highly sound-insulating partition wall between the source and receiving rooms guarantees precise and reproducible measurement results. This technical setup provides ideal conditions for measuring closed suspended ceilings, grid ceilings and systems with integrated ceiling elements.
By cooperating with the Acoustics Department of the Fraunhofer IBP, you gain access not only to state-of-the-art testing technology, but also to comprehensive know-how and years of experience in building acoustics. Our tests help you to optimize the acoustic performance of your products, meet legal requirements and enhance your market competitiveness. You will benefit from our scientific expertise and practice-oriented solutions - perfectly tailored to your individual requirements.
How can we assist you? Learn more about our range of services or send us an e-mail.
| Measurement | Normalized flanking level difference |
| Standard | DIN EN ISO 10848-2 |
| Measurement object | Suspended board ceilings, grid ceilings, metal ceilings, ceilings systems with lights and air terminals, bulkheads (absorbent, boards) |
Technical data
| Floor area (2 rooms) | 18.76 m² and 23.32 m² |
| Room volume (2 rooms) | 55.2 m³ and 72.7 m³ |
| Entrance doors (H × W) | 1.900 × 0.805 m and 1.910 × 1.875 m |
| Height of the ceiling plenum | Variable between 400 mm and 1150 mm |
Special feature
| Max. sound reduction (related to the size of test sample) | R'max,w = 77 dB |
More information
- The concrete floor above the suspended ceiling is adjustable in height, so the plenum height can be changed without changing the suspended ceiling.
- Mounting grids available
- The separating wall below the suspended ceiling is made of a multi-layer panel construction with high sound insulation.