Education: Secondary (high) school graduation certificate. Tasks: Install roofing tiles on sloped roofs of buildings. Install single-ply roofing system using waterproof sheet materials, such as modified plastics, elastomeric or other asphaltic compositions. Read blueprints, drawings and specifications to determine work requirements . Repair or replace single-ply roofing systems. Repair roofing systems. Supervise other workers. Install and repair metal roofs using hand and power tools. Estimate costs and materials. Employment terms options: Early morning. Experience: 1 year to less than 2 years. Employment terms options: Morning. Day.