Education: No degree, certificate or diploma. 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. 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 . Apply waterproof coatings to concrete or other masonry surfaces below or above ground level. Install and repair metal roofs using hand and power tools. Estimate costs and materials. Erect and install scaffolding, falsework and other working platforms. Screening questions: Do you have experience working in this field?. Experience: 2 years to less than 3 years.