Education: Secondary (high) school graduation certificate. Tasks: Install built-up roofing systems using materials such as asphalt saturated felts and hot asphalt and gravel. Repair or replace shingles and shakes on sloped roofs of buildings. Repair or replace single-ply roofing systems. Apply waterproof coatings to concrete or other masonry surfaces below or above ground level. Install and repair metal roofs using hand and power tools. Install sheet metal flashings. Screening questions: Do you have experience working in this field?. Employment terms options: Early morning. Evening. Experience: 2 years to less than 3 years. Employment terms options: Morning. Day. Health benefits: Health care plan.