A roofer, roof mechanic, or roofing contractor is a construction worker who specializes in roof construction. Roofers replace, repair, and install the roofs of buildings, using a variety of materials, including Roof shingle, Bituminous waterproofing, and Metal roof. Roofing work can be physically demanding because it involves heavy lifting, as well as climbing, bending, and kneeling, frequently in very hot weather.
In the United States and Canada, they're often referred to as roofing contractors. The most common roofing material in the United States is asphalt shingles. In the past, 3-tab shingles were used; nowadays, "architectural" or "dimensional" shingles are becoming very popular.
Depending on the region, other commonly applied roofing materials installed by roofers include concrete tiles, clay tiles, natural or synthetic slate, single-ply (primarily EPDM rubber, Polyvinyl chloride, or Thermoplastic olefin), rubber shingles (made from recycled tires), glass, metal panels or shingles, wood shakes or shingles, liquid-applied, hot asphalt/rubber, foam, thatch, and solar tiles. "Living roof" systems, or rooftop landscapes, have become increasingly common in recent years in both residential and commercial applications.See List of commercially available roofing material