Question: how much does roofing cost per square metre?
Answer: Shingles are sold by the bundle and by the square. A square is equal to 100 square feet and will cost anywhere between $100 and $1,800. A bundle is around 1/3 of a square and costs an average of $30 to $600. On the low end, asphalt averages $100 and $150 per square while slate averages about $1,200.