Which of the following is NOT a component of wood stairs?

The correct answer is the header, as it is not a component of wood stairs. In the context of stair construction, risers, stringers, and treads are fundamental elements that contribute to the structure and functionality of the stairs.

Risers are the vertical components that provide the height between each step, contributing to the overall rise of the staircase. Stringers are the structural supports that hold up the treads and risers, providing stability and shape to the stairs. Treads are the horizontal surfaces that you step on, allowing for safe passage up and down the staircase.

In contrast, a header is typically associated with door frames, windows, or other structural openings, serving a different purpose in construction. It does not play a role in the construction or functionality of wood stairs. Understanding the specific components and their functions is key in home inspection, as it aids in identifying structural integrity and compliance with building codes.