Carpenters build or remodel almost every kind of structure, including houses and commercial buildings, bridges, churches, factories, and highways. They work with power and hand tools to build wood framing for houses, roofs, stairs, decks, and sheaths, and forms for concrete. Carpenters install doors, windows, and handrails, build cabinets, and counter tops. Carpenters perform interior and exterior finish work. They read blueprints, measure accurately, and calculate dimensions.