Abstract: The present invention includes panels having longitudinal sides configured for lateral engagement of the panels an include a drainage channel hidden by a jut or wing of the panel arranged immediately beside the channel. The channel collects possible infiltrations through joints arranged between the laterally coupled panels. The panels also include a slot at one end and an extension at the other end which, when are coupled together by overlapping and axial sliding. The panels have a space in which a securing staple is arranged to secure the panels to a support structure. The staple is spaced apart from the channel and hidden by the jut of the next lateral panel, so that the securing devices are isolated from the outside. In a preferred embodiment, one of the sides of the panels has a cross section with a smaller cross section than the rest of the panel so that it can be coupled by longitudinal sliding into a slot of complementary form arranged at the other end of the panels.