average cost of roofing
1 In general, you should expect the EPDM roofing cost to be between $2.50 and $5.00 per square foot. 2  For an average-sized roof of 1,500 square feet, that s a total cost of around $4,000 to $8,000. 3  Installing EPDM roofing on a small area because it involves more detailed work might cost up to $10 per square foot.