Looking for some average costs to replace commercial flat roof. I would like to hear prices for different material (asphalt roll, bitumen, synthetic, etc). How do the commercial roofing guys quote per square foot. Just looking for averages.
Approximately $ 8 - $ 15 per square foot, but there are a lot of factors that affect the final price, when I replaced my flat roof in Toronto, it cost me $ 13 per foot.
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