Maintenance plans are offered for present roof devices right after an intensive audit because of the roofing contractor. Industry scientific tests show that a proactive upkeep program can reduced the normal life-cycle cost of a roof to $0.14 per sq. foot. Picture courtesy of GAF. HomeAdvisor's Concrete Slab Expense Calculator https://www.bestincom.com/united-states/yorkville/top-level-category/advanced-roofing-inc