What is the primary function of a header in wall framing?

The primary function of a header in wall framing is to support weight above openings, such as doors and windows. When a wall has an opening, the structural integrity of the wall can be compromised if the load from the roof or upper floors is not properly distributed. The header serves as a structural element that spans the opening, transferring the load around the opening down to the vertical framing members, or studs, on either side.

This is crucial in maintaining the stability and strength of the wall, ensuring that it can withstand the forces applied to it. Without a properly installed header, the opening could become a weak point, leading to sagging or structural failure. This function is vital in any building structure, especially in residential home construction where loads and stresses must be carefully managed.

While headers may indirectly influence the insulation and appearance of a space or contribute to reducing drafts, these are not their primary functions. Their main role is fundamentally about load-bearing and structural support.