Ключевые слова: apprentice, architecture, build, builder, building, carpenter, commercial, construction, contractor, craftsmen, equipment, fixing, hammer, high, home, horizontal, house, industry, installing, job, labor, laying, male, man, men, metal, one, people, professional, repair, repairing, roof, roof workers, roofer, roofers, roofing, rooftop, safety, sheet, site, sky, slate, structure, tool, work, worker, workers, working,