Tiles, the warranty

For bituminous tiles, a warranty case is considered to be a production marriage associated with a violation of the shape of the tile or uneven spraying. But for ceramic tiles, the warranty period is 30-50 years. And the list of warranty cases here is much larger — this is a violation of water resistance or resistance to negative temperatures, and distortion of the form. While a change in the color of the surface is not included here.