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Definition

A fine-grained rock, typically bluish-gray in color, that can easily be split into thin layers and is commonly used as a roofing material.

Things you need to know

Slate is very durable, has an extremely low water absorption index, and is resistant to frost damage. Slate used as a roofing material comes in a variety of colors. Slate is often named after the geographical region of its origin.

Cost Considerations

Slate is one of the most expensive roofing materials available. It averages $10 to $20 per square foot ($15,000 to $30,000 for a 1,500 square foot roof). Slate that is very unique or thick can run up to $50 per square foot.

Costs vary greatly by region (and even by zip code). To get free estimates from local contractors, please indicate yours.

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