This industry comprises establishments primarily engaged in drywall, plaster work, and building insulation work. Plaster work includes applying plain or ornamental plaster, and installation of lath to receive plaster. The work performed may include new work, additions, alterations, maintenance, and repairs. Applying stucco--are classified in Industry 238140, Masonry Contractors; and Insulating pipes and boilers--are classified in Industry 238290, Other Building Equipment Contractors.