A drywall installer measures, cuts, and builds interior walls for residential and commercial construction projects using drywall. As a drywall installer, your main duty is to prepare drywall panels for installation. This includes measuring and cutting panels, transporting drywall and equipment to job sites, installing the panels, patching nail holes, applying tape and sealing compound, and sanding the joints to prepare for painting. You must be able to lift heavy materials, do repetitive physical labor, and be on your feet most of each work shift. While you can work as a freelancer, most drywall installers begin their career with a construction company.