HomeAdvisor’s Roofing Cost Guide lists pricesociated with installing a new roof including labor and materials, as reported by HomeAdvisor customers..Learn how much the average metal roof costs in your area. Metal roofing costs will vary, but HomeAdvisor’s Cost Guide can help calculate average costs to install or replace a metal roof..Colorbond roofing costs in Sydney can be estimated here. There are many variables to the cost of a colorbond roof .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..