HomeAdvisor’s Shingle Roof Cost Guide provides prices of different shingles per bundle, square, sq ft. Calculate costs to replace, reshingle, or install new roofing..How much a new roof should cost. Average costs and comments from CostHelper’s team of professional journalists and community of users. Do it yourself materials to install an asphalt shingle roof on an average one story ranch style home with a gently sloping roof of , , square feet can run $ $,, depending on the quality of the .Roof replacement prices in US range from $. $. per sq.ft. for asphalt shingles to $. $. per sq.ft. for metal wood, etc . Your actual cost will vary depending on roof size compl.Roof Shingles. Roofs can last for several decades, but eventually the sun, rain, wind, and ice take their toll. Residential property owners can use the guidelines below to estimate the cost of replacing a roof, whether it must occur now or can wait for a few years..