Form smooth

To secure the sheets with screws to the crate, it is tidious to screw them with a drilling electric machine with a set of prefixes or a small -sized pneumatic reversal screwdriver or an electric shut. When installing the subsequent rows, the roofer must pull the cord in the direction along the cornice, at the same time, having retreated from the upper edge of the laid row of sheets overlap. During the laying of sheets, it is necessary to ensure that the ends of the row form smooth lines along the cord.