Measurement Results and Feedback from Our First School Project

infinispring — Tue, 09 Dec 2025 06:42:30 +0000

The Pehula Multi-Service Center, now successfully in use, combines a school, kindergarten, and preschool under one roof. As part of this project, InfiniSpring acoustic products were installed to ensure optimal sound performance throughout the building.

Customer Feedback

We are pleased to share positive feedback from Jarno Valkama of Rakennustoimisto Pekka Kynnös Oy: “The installation of InfiniSpring acoustic products went smoothly, and we are happy to continue using these products in the future.”

Acoustic Performance Validation

To confirm compliance with the National Building Code of Finland’s noise requirements, comprehensive acoustic measurements were carried out at Pehula. InfiniSpring solutions are designed to minimize both impact noise and airborne noise, creating a better learning and working environment. Special attention was given to sensitive areas such as the music room, where sound isolation is critical to prevent disturbance in adjacent spaces.

The results clearly meet the required standards. Below is a summary of the measurements:

Standardized Sound Level Difference (DnT,w)

Measurements were performed using a loudspeaker connected to a pink noise generator. Sound pressure levels were recorded in both transmitting and receiving rooms, and standardized sound level differences (DnT) were calculated based on reverberation times. Both results horizontal for the wall structure and vertical for the floor exceed the requirements.

Figures 1 and 2 show the structural setups and measurement results.

Figure 1. Standardized sound level No 1 DnT,w 55 dB

Figure 2. Standardized sound level No 2 DnT,w 73 dB

Standardized Impact Sound Level (L’nT,w)

Impact sound measurements were conducted using a standardized impact sound device. Sound pressure levels were measured in the receiving rooms, and L’nT,w values were determined using the reference curve procedure.

Again, both results clearly meet the requirements. Figures 3 and 4 show the detailed measurement data.

Figure 3. Standardized impact sound level No 1 L’nT,w 45 dB

Figure 4. Standardized impact sound level No 2 L’nT,w 27 dB

Conclusion

The Pehula project demonstrates how InfiniSpring acoustic solutions deliver reliable performance, ensuring compliance with strict noise regulations while enhancing comfort in educational environments.

For more details or technical documentation, please contact us.

Link to previous post introducing acoustic products and showing acoustic product installations before gypsum board installations: Pehula Multi-Service Center – Sastamala, Finland