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Can it be installed over an existing roof?

April 26, 2017existing installed roof

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Can it be installed over an existing roof?

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In most cases a metal roof can be installed over composition roofing materials. The condition of the roofing substructure will be a factor and the building codes in your area will dictate the number of roofing layers allowed. Because of its light weight, relative to all other roofing systems, many local codes will allow installation of a metal roof over multiple roofing layers where other systems would be prohibited.