A rake edge for a roof of a building includes a body having a lower portion and an upper portion. A fold is disposed on an inside end of the body. A downwardly extending side shield protrudes orthogonally from the lower portion. A shield edge protrudes outwardly from the side shield at an angle between 5 degrees and 90 degrees from a planar extent of the side shield. A shield edge underlap projects inwardly parallel with the shield edge. A trim portion extends over the upper portion. The trim portion is generally parallel with the upper portion and spaced a predetermined distance therefrom. A trim portion underlap is disposed between the upper portion and the trim portion.

Interlocking roof shingle has a front rounded tongue on the first side edge; a tongue on the first end edge; an elongated groove assembly on the upper surface with a groove defined therein; a groove in the second end edge of the body; a groove in the second side edge of the body; and an elongated tongue assembly on the lower surface. In an embodiment of the invention, the front rounded tongue of an upper roof shingle is inserted into the elongated groove assembly of a lower roof shingle while at the same time a leg of the elongated tongue assembly of the upper roof shingle enters into a groove in the second end edge of the lower roof shingle for interlocking upper and lower shingles. The tongue on the first end edge is inserted into a corresponding groove in the second end edge of an adjacent roof shingle.