A professional who operates machine to coat continuous rolls of roofing felt with asphalt, colored slate granules, powdered mica, or tar, to make roll roofing or shingles. Respnsibilities include:

• Threads felt through or around series of coating rollers.
• Pulls felt through rollers and adjusts tension.
• Sets machine controls to gradually increase speed of rollers to specified operating speeds, or pulls levers and turns valves and wheels to synchronize machine speed and flow of coating material.
• Observes gauge and adjusts rheostat to regulate temperature of coating material in reservoir.
• Examines felt as it emerges from rollers to ensure that coating material is applied according to specifications.
• May feel moving felt to determine whether granules are being deposited uniformly and are adhering as specified.
• May be designated according to type of coating applied as coater, asphalt; coater, slate.