A carpenter helper assists a journeyman or master carpenter with various tasks involving new construction, remodeling, or damage repair. As a carpenter helper, you work both in homes and outside on construction sites, using many types of hand and power tools. Duties include completing basic demolition, cleaning up and preparing work sites, delivering materials, and setting up ladders and temporary structures. Your responsibilities also include removing, replacing, and installing doors, trim, baseboards, cabinets, flooring, windows, bathroom vanities, and more. You also measure, mark, and hold timbers and paneling in place for the carpenter to fasten or cut.