Patent ID: 7121057

Claim:
A pattern of roof tiles, comprising: roof tiles where each roof tile includes a body having an upper surface, a lower surface, the body bounded by an upper edge and a lower edge, a first edge on one side extending between the upper and lower edges and a second opposite edge extending between the upper and lower edges, at least the upper surface having a texture which undulates in a sinusoidal fashion in two directions a first generally lateral direction extending across the roof tile between the first and second edges and a second generally longitudinal direction extending generally vertically between the upper and lower edges and wherein the lengths of the waves in the first generally lateral direction are substantially longer than the lengths of the waves in the second generally longitudinal direction, the first direction oriented such that the longer wave lengths in the lateral direction are oriented such that they are angled downwardly from the first edge to the second edge, whereby rain water draining down the surface of the roof tile will be redirected from exclusively flowing longitudinally and will also flow at least partially in a lateral direction across the roof tile.