In order to avoid marriage when installing tiles, you should adhere to certain rules as much as possible. It is necessary to load the metal tile with a crane with soft slings. Tiles should be stored in the factory packaging of no more than 1.5 months, the contrary should be shifted by the sheets to the rails and provide sufficient ventilation. Next, you should devote time to the analysis of the roof, verification of its symmetry, size and shape. In places of distortions, the sheets should be laid along the bottom of the crate, and the ends should be sealed with additional elements.