Acoustic Applications

New brochure detailing excellent acoustic performance of Inno-Therm®/Métisse® for professional and DIY applications

Inno-Therm®/Métisse® Brochure 2018

Insulation slabs
Acoustic Batts

Inno-Therm®/Métisse® meets or exceeds quality and performance standards of conventional insulation products. Composition 85% recycled cotton. The acoustic eko batts are 45 mm x 600 mm wide x 1.2 m long. The thermal conductivity is 0.039 W/(mK). The  product has a high coefficient of sound absorption (= 0,95) and acoustic fading is 42 dB with a density of 45 kg/m3(+/-10%).

The insulation allows, besides its hydrothermal performance, to provide acoustic comfort and that even with a little thickness. There is also a thermal/acoustic product with a thickness of m+ 50 mm – density of 25 kg/m3 – (0.039 W/(mK) and it achieves a weighted sound absorption coefficient αW = 0.85 and acoustic fading is 42 dB

The results are derived from acoustic measurements in accordance with ISO 11 654 standard made by the ICAM linked to the UTC the 10/05/2008.

Inno-Therm®/Métisse® can supply acoustic rolls of 20 mm thickness x 1.2 m width with a density of 45 kg/m3 with a high coefficient of sound absorption (0.95) and acoustic fading is 20 dB. 

Graph showing Transmission Loss for 20mm Felt

How to build a sound reducing widow frame

Acoustic Baffle
Acoustic Baffle


Read how Inno-Therm®/Métisse® acoustic insulation was used in the 2014 Winter Olympics Read more

Read how Inno-Therm®/Métisse® acoustic insulation was used in the 2012 London Games. Read more

Eko baffles Technical Information (French language)

Laboratory Test report for Metisse PM + 50mm acoustic  (English)

Laboratory Test report for Metisse PM + 45mm acoustic  (Dutch) (Information is in the English document)

Acoustic baffle
Acoustic baffle

Random-incidence absorption coefficient

Description of the specimen: 20 mm thickness of Inno-Therm®/Métisse®
The random absorption coefficient is 0.72 at 1000 Hz and increases to 0.9 at 2000 Hz. The material is showing excellent performance at the lower and mid frequency range for the given thickness (20 mm).

Frequency [Hz] Absorption coefficient
100 0.03
125 0.04
160 0.06
200 0.09
250 0.13
315 0.19
400 0.27
500 0.36
630 0.47
800 0.60
1000 0.72
1250 0.82
1600 0.88
2000 0.90
2500 0.89
3150 0.89
4000 0.90
5000 0.90