41+ Average Price To Replace A Roof. Calculate the price of your roof replacement. Our average flat roof cost is based on a cumulative sample of pricing for single ply roofing (pvc, tpo and epdm rubber membranes), rolled, tar & gravel these are installed on over 90% of all commercial roofs, and over 70% of all residential roofs.
The first factor to be taken into consideration is how big the roof is, and the types of shingles to be used on if the roof is 50 x 45, then you can add about a thousand more to that price.
Calculate the price of your roof replacement. Average costs and comments from costhelper's team of professional journalists and community of users. The cost of replacing a roof depends on several key variables, including total roof surface area 6.1 cost to replace an asphalt shingle roof. A midrange roof replacement costs $20,670, on average, according to remodeling magazine's analysis of select construction estimates.