Earthwool R2.0 HD Wall insulation is an economical choice with improved acoustic and energy saving properties, creating a peaceful environment in your home by absorbing sound and keeping it where it should be. It’s super-soft to handle and install and available in thickness to suit 75mm timber frames. Earthwool insulation is made using up to 80% recycled glass and with ECOSE Technology, a sustainable, bio-based binder that contains no added formaldehyde.