Education: Secondary (high) school graduation certificate. Tasks: Install built-up roofing systems using materials such as asphalt saturated felts and hot asphalt and gravel. 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. 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 shingles and shakes on sloped roofs of buildings. Repair or replace single-ply roofing systems. Repair 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. Erect and install scaffolding, falsework and other working platforms. Experience: 2 years to less than 3 years. Other benefits: Other benefits.