The Acoustic Benefits of Gutex Woodfibre

An acoustic comparison of common insulations available on the market today. Due to its high density and mass, woodfibre excels in reducing noise pollution and airborne sound. For this video, we designed three different 'sound boxes' and fitted each with a common type of insulation. A speaker was then placed inside each box to test the acoustic performance.

[@chriswithall2518]

what was the 1st material ? the 2nd was obviously rockwool but wht thickness and grade?

[@EcologicalBuildingSystems]

Hi Chris
The materials used in the acoustic test are as follows:
40 mm polystyrene, lambda-value 035 (≥ 100 kPa x s/m² flow resistance)
40 mm stonewool 039 for separation walls (≥ 6 kPa x s/m² flow resistance)
40 mm GUTEX Thermowall (≥ 100 kPa x s/m² flow resistance)
The soundproofing test is connected to the flow resistance, density, and fibre/surface structure.
I hope this helps, but don’t hesitate to contact us if you have any further queries.

[@johnwhite2576]

Thicker gutex was used here, also Rockwool makes a denser product than you used for soundproofing purposes

[@videogalore]

I think the point is that you wouldn't use an acoustic product from Rockwool in an external wall, so this is tackling two issues in one. As for the thickness, hard to say from this, but they look the same thickness overall to me.

[@EcologicalBuildingSystems]

All insulation materials shown are identical thickness. The GUTEX woodfibre insulation shown also has a density of 180kg/m, much denser than mineral wool. This higher density combined with the Gutex wood fibres fibrous structure and higher inherent wind tightness (100 kPa s/m³) provide superior sound reduction levels at equivalent thicknesses.