The incumbent inspects, maintains, and repairs machinery, equipment, systems, buildings, facilities and physical structures. Must be a specialist in job classification and be able to assist, under supervision, in other job skills when it is a requisite for job completion. Working with complex blueprints, diagrams, and sketches, and from general verbal and written instructions, according to established operating procedures, performs the following duties while cooperating with all levels within the organization in support of the four Johns Manville core values: People, Passion, Performance, and Protection.