Curvelet is a safe, protective cover system that ideally integrates into hard to access areas, such as roof tops of work space. With a design that features moving parts to transmit the tension axially away from the corners, this patented innovation reduces the stress and tension usually caused by the overlapping of metal sheets on corners to an absolute minimum. Moreover, the CURVELET cover system offers significantly improved shedding of chips, shavings, etc., particularly, in the corners.