For a small, or more crowded area, you may need to install a spiral staircase. For the purpose of this article, we will choose the simplest, a diagonal up and down wood staircase.
Using a framing hammer, nail the stringer to the wall studs, making sure each nail is securely in the stud. Further secure the stringer with braces all the way to the floor. Align the second stringer for the correct width and height. The second stringer should be supported by a standard frame wall. Brace the wall under the stringer and secure with framing nails.
