Masons fibre cement sheets are for general purpose use (such as soffits, carports, sheds, cladding, gable ends, rigid wall underlay, tile underlay) and for use with the Barricade Weather Defense System – a three-part system, comprising Masons’ 6mm and 9mm fibre cement sheets, Barricade Weather Defense self-adhesive weather-resistive barrier wrap, and flashing tapes for openings.