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

The post Measurement Results and Feedback from Our First School Project appeared first on InfiniSpring.

The project’s general contractor is Rakennustoimisto Pekka Kynnös Oy, a respected construction company, and the construction management consultant is A-Insinöörit, a Finnish consultancy specializing in project development and design services. InfiniSpring® is proud to be part of this meaningful project, working in close cooperation with Virpi Hankaniemi from A-Insinöörit. Among her many contributions, Virpi has ensured that the Pehula Multi-Service Center complies with the National Building Code of Finland’s noise requirements.

Scheduled for completion by the end of 2025, the building is being constructed primarily from mass timber, aligning with sustainable construction practices. The design emphasizes flexibility, enabling multi-functional use of the space while fostering a safe and familiar learning environment for children.

In January 2025, we visited the site with Jarno Valkama from Rakennustoimisto Pekka Kynnös Oy to deliver InfiniSpring Acoustic Products. At that time, the mass timber construction phase had been completed, and interior construction work was actively underway.

InfiniSpring Acoustic Products are playing a key role in achieving excellent soundproofing throughout the building. Our solutions help minimize both impact and airborne noise, enhancing the learning and working environment. In particular, we’ve supported acoustic isolation in sensitive areas like the music room, where sound can easily disturb adjacent spaces if not properly managed. Our products are being installed in walls and ceilings to reduce sound transmission and ensure a calm, focused atmosphere throughout the facility.

To support optimal acoustic isolation at the Pehula Multi-Service Center, the following InfiniSpring Acoustic Products have been implemented:

• InfiniSpring Acoustic Hanger AH60N
📄 Product Card | 🛠️ Installation Instruction

• InfiniSpring Acoustic Wall Tie AWT250NN
📄 Product Card | 🛠️ Installation Instruction

• InfiniSpring Acoustic Wall Tie AWT94NA
📄 Product Card | 🛠️ Installation Instruction

📸 Below are some photos showing the construction status, our acoustic products, and their installation within the school.

The post Pehula Multi-Service Center – Sastamala, Finland appeared first on InfiniSpring.