Ключевые слова: architecture, background, beam, builder, building, commercial, concrete, construction, contractor, crew, equipment, estate, exterior, frame, home, house, industry, inspection, install, installation, installing, ladder, lay, laying, maintenance, manual, men, metal, new, occupation, outdoors, people, renovation, repair, residential, roof, roofer, roofers, roofing, rooftop, safety, shingles, site, sky, steel, tile, tiles, work, worker, working,