There is provided a roof cladding consisting of elements (10) of recycled plastics, material comprising a body portion (11), a batten engagement portion (12) located at the leading edge (14) of the body portion (11) and a batten back stop (13) being a transverse rib located on the underside of the body portion (11) at a spacing from the batten engagement means (12) determined by the pitch or spacing of the roofing battens (15). The batten engagement portion (12) comprises a downward depending web (16) adapted to bear on the up-slope face of the roofing batten (15), and a lower web (17) extending therefrom to lay adjacent the under surface of the batten (15) in use. The edge of the lower web (17) toward the leading edge (14) is provided with a locking lug (20) in the form of a ridge adapted to pass the batten (15) against the resilient bias of the downward depending web (16) and the lower web (17), to engage the leading face of the roof batten (15). The clearance between the body portion (11) and the lower web (17) is such that the space accommodates the trailing edge (21) of an adjacent roofing element (10) to trap the trailing edge (21) between the underside of the body portion (11) and the batten (15). Further installed security is provided by the backstop (13) engaging the upper leading edge of the adjacent batten (15).