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. Repair or replace shingles and shakes on sloped roofs of buildings. 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. Estimate costs and materials. Erect and install scaffolding, falsework and other working platforms. Experience: 1 year to less than 2 years.