The Ecowool wall insulation helps improve the indoor air quality as there is no added formaldehyde or other nasty chemicals. It has the advantage of being soft to the touch and retains its form and shape, allowing for easy installation and handling. The Ecowool R2.0 does not encourage the growth of mould, fungus, or bacteria, and with no bio-soluble fibres research has shown to pose no long-term health risks. Insulation batts are the traditional insulation product for external walls and can also be used to reduce sound transmission between rooms.