About McElroy Metal McElroy Metal is a leading manufacturer of metal roofing, metal siding and sub-structural components with 14 manufacturing facilities, 29 Service Centers and 44 Metal Mart locations across the US. After making a conditional offer and running a background check, if McElroy Metal is concerned about conviction that is directly related to the job, you will be given the chance to explain the circumstances surrounding the conviction, provide mitigating evidence, or challenge the accuracy of the background report.