the cost of installing slate siding
(Tip: When you're paying this much for the material, you want a slate specialist to install it.) All told, the cost of installing a slate roof can range from about $1,500 to over $5,000 per square. On a 30-square (3,000 square-foot) roof, that's a price tag of $45,000 to $150,000 for the whole job. Now, back to the question of affordability, or more precisely, relative affordability.