Ключевые слова: altitude, boots, building, building codes, clouds, cold, construction, equipment, fall protection, gloves, hard hat, heat, home, house, humidity, ice, installation, insulation, ladder, maintenance, materials, osha, permits, ppe, pressure, rain, regulations, repair, roofer, roofing, safety, safety gear, safety glasses, safety harness, scaffolding, sky, snow, standards, sun, temperature, tiles, tools, ventilation, weather, wind, work,