1st layer of board with Mineral Wool in Air Gap2017-09-082017-09-08https://www.mason-uk.co.uk/wp-content/uploads/2018/04/mason-uk-logo-master-dark-purple-289-89.pngMason UKhttps://www.mason-uk.co.uk/wp-content/uploads/2018/04/mason-uk-logo-master-dark-purple-289-89.png200px200px
