Install, repair, and replace roofing systems, including asphalt shingle, tile, metal, and low-slope/flat roof systems, in accordance with the scope of work, manufacturer specifications, and the California Building Code and local San Diego jurisdiction requirements. Exposure to outdoor conditions, including extreme heat, cold, humid conditions, wind, rain, and other inclement weather, including heated roof surfaces; heat illness prevention measures (water, shade, rest) are provided in accordance with Cal/OSHA requirements.