Cover roofs of structures with shingles, slate, asphalt, aluminum, wood, and related materials. May spray roofs, sidings, and walls with material to bind, seal, insulate, or soundproof sections of structures.

Align roofing materials with edges of roofs. Apply alternate layers of hot asphalt or tar and roofing paper to roofs, according to specification. Apply gravel or pebbles over top layers of roofs, using rakes or stiff-bristled brooms. Apply plastic coatings and membranes, fiberglass, or felt over sloped roofs before applying shingles. Cement or nail flashing-strips of metal or shingle over joints to make them watertight. Cover exposed nailheads with roofing cement or caulking to prevent water leakage and rust. Cover roofs and exterior walls of structures with slate, asphalt, aluminum, wood, gravel, gypsum, and/or related materials, using brushes, knives, punches, hammers and other tools. Cut felt, shingles, and strips of flashing; and fit them into angles formed by walls, vents, and intersecting roof surfaces. Cut roofing paper to size using knives; and nail or staple roofing paper to roofs in overlapping strips to form bases for other materials. Glaze top layers to make a smooth finish, or embed gravel in the bitumen for rough surfaces. Inspect problem roofs to determine the best procedures for repairing them. Install partially overlapping layers of material over roof insulation surfaces, determining distance of roofing material overlap using chalk lines, gauges on shingling hatchets, or lines on shingles. Install vapor barriers and/or layers of insulation on the roof decks of flat roofs, and seal the seams. Install, repair, or replace single-ply roofing systems, using waterproof sheet materials such as modified plastics, elastomeric, or other asphaltic compositions. Mop or pour hot asphalt or tar onto roof bases. Clean and maintain equipment. Hammer and chisel away rough spots or remove them with rubbing bricks to prepare surfaces for waterproofing. Punch holes in slate, tile, terra cotta, or wooden shingles, using punches and hammers. Remove snow, water, or debris from roofs prior to applying roofing materials. Set up scaffolding to provide safe access to roofs. Spray roofs, sidings, and walls with material to bind, seal, insulate, or soundproof sections of structures, using spray guns, air compressors, and heaters. Waterproof and damp-proof walls, floors, roofs, foundations, and basements by painting or spraying surfaces with waterproof coatings, or by attaching waterproofing membranes to surfaces. Estimate roofing materials and labor required to complete jobs, and provide price quotes.

Building and Construction -- Knowledge of materials, methods, and the tools involved in the construction or repair of houses, buildings, or other structures such as highways and roads. Mechanical -- Knowledge of machines and tools, including their designs, uses, repair, and maintenance.

Equipment Selection -- Determining the kind of tools and equipment needed to do a job. Operation and Control -- Controlling operations of equipment or systems. Installation -- Installing equipment, machines, wiring, or programs to meet specifications. Coordination -- Adjusting actions in relation to others' actions.

Gross Body Equilibrium -- The ability to keep or regain your body balance or stay upright when in an unstable position. Static Strength -- The ability to exert maximum muscle force to lift, push, pull, or carry objects. Extent Flexibility -- The ability to bend, stretch, twist, or reach with your body, arms, and/or legs. Stamina -- The ability to exert yourself physically over long periods of time without getting winded or out of breath. Explosive Strength -- The ability to use short bursts of muscle force to propel oneself (as in jumping or sprinting), or to throw an object. Manual Dexterity -- The ability to quickly move your hand, your hand together with your arm, or your two hands to grasp, manipulate, or assemble objects.

Performing General Physical Activities -- Performing physical activities that require considerable use of your arms and legs and moving your whole body, such as climbing, lifting, balancing, walking, stooping, and handling of materials. Handling and Moving Objects -- Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things. Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources.