An asphalt roof may weigh between 230 to 430 pounds per hundred square feet, while slate can weigh in between 800 to 1,500 pounds per hundred square feet, depending on the thickness of your tiles.

Slate roofs are known for their durability and beauty, but how much do they cost? The typical price range is $5,421 to $23,557, with a national average slate roof cost of $13,926.

Photovoltaic Slate Tiles Upgrade Your Roof With Solar Power Architecture Design Architecture 09/07/2010 under Architecture, Environment, Renewable Energy ...

Available in 18 colors and seven blends, InSpire simulated slate roof tiles are made of a 100%-recyclable blend of virgin resins and natural limestone that has been compression-molded, resulting in a ...