Traditionally, mineral wool insulation (often called fibreglass insulation) has been yellow (for glass mineral wool) or greeny/grey (for rock mineral wool insulation). The colour of each comes mainly from the binder that is used to hold the fibres together.
However, Knauf Insulation has recently changed the manufacture of all its mineral wool products to use ECOSE® Technology. This technology produces a brown insulation because the binder is based on rapidly renewable material and is free from formaldehyde, phenols, acrylics and has no artificial colours, bleach or dyes added.
So insulation made with ECOSE® Technology is more sustainable as:
- they have the added benefit of using a binder, which is up to 70% less energy intensive than traditional binders. With ECOSE®Technology, rapidly-renewable bio-based materials replace the traditional chemicals
- manufacturing emissions are reduced
- since there is no formaldehyde or phenol used with ECOSE® Technology, it contributes to improved indoor air quality of buildings.
So as we say we didn't choose brown, it just came naturally...