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# Roofing Maintenance Cost Calculations

By Karen Warseck   Roofing

 A poorly maintained roof will last only about half of its service life, costing facility managers hundreds of thousands of dollars. Don't believe that? Let's do the math. Say you have a 50,000-square-foot roof, with a 10-year design life. The cost to install it was \$10 a square foot. That means the roof cost \$500,000 to install. The cost per year of the roof is \$50,000 per year. If the roof is not maintained, and it only lasts half of its design life, the yearly cost of this roof jumps to \$100,000 a year. If that happens, in 5 years, you will need another \$500,000 to replace it. The cost to maintain a roof averages about 2 percent of the roof installation cost per year. In our example, that means \$10,000 a year. Over 10 years, that means \$100,000. Spending that money to keep the roof maintained means the roof should last its full service life, which in turn means that you will only have to spend that \$500,000 once. So even though you have spent \$100,000 over the roof's service life, you may well have saved \$400,000 by not having to replace the roof prematurely. — Karen Warseck

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posted on 7/27/2010   Article Use Policy

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