Corrugated metal allows ice and snow to melt and move quickly off the roof. It's not easily damaged by the wind and can sometimes be installed over existing shingles.
Slate tiles can come from real stone or for those wanting to achieve the look of stone slate without the extra weight and cost, synthetic slate tiles like pictured above are available.
Asphalt shingles in architectural or 3 tab style are the most common roof material. Pictured above is a heavy triple laminate asphalt shingle featuring prolonged life and durability.