Using 2-by-4 studs and half-inch sheetrock, the normal interior wall thickness of modern buildings with 2-by-4 studs and half-inch sheetrock is 4.5 inches. Typically, 2-by-6 studs are used in plumbing-containing walls, making these walls 6.5 inches thick. The thickness of exterior walls vary based on the exterior treatment, siding, and brick facing. 2-by-4 (inches) is […]









