Education: Secondary (high) school graduation certificate. Work site environment: At heights. Work setting: Various locations. Tasks: Install or replace asphalt shingles, wood shingles and shakes and masonry or baked clay roofing tiles on sloped roofs of buildings. Install roofing tiles on sloped roofs of buildings. Read blueprints, drawings and specifications to determine work requirements . Repair roofing systems. Install and repair metal roofs using hand and power tools. Work conditions and physical capabilities: Physically demanding. Bending, crouching, kneeling. Hand-eye co-ordination. Handling heavy loads. Repetitive tasks. Experience: 2 years to less than 3 years.