Does the riser go behind the tread?

Does the Riser Go Behind the Tread in Stair Construction?

Understanding the Order of Installation: Riser First, Tread Second

Yes, in standard stair construction, the riser board is typically installed before the tread. This sequence ensures a clean, tight fit between the top of the riser and the underside of the tread above it, enhancing both the aesthetic and structural integrity of the staircase.

Why the Riser Goes First: Technical Insights

• Accommodating Variations: In real-world construction, there might be slight variations in the dimensions of the riser boards or the notches cut into the stair stringers (the structural support for the stairs). Installing the riser first allows for minor adjustments to be made during the tread installation, ensuring a flush and level surface.
• Structural Support: By placing the riser first, it acts as a backing for the tread, providing additional support and preventing any potential sagging or movement over time.
• Visual Appeal: Installing the riser first creates a clean, finished look where the tread neatly overlaps the riser. This approach conceals any potential gaps or inconsistencies that might occur if the tread were installed first.

Building Codes and Stair Construction

While building codes primarily focus on overall stair safety and dimensions, they generally don’t explicitly dictate the order of riser and tread installation. However, the sequence of riser-first, tread-second is widely accepted as the standard practice in the construction industry, contributing to the structural soundness and visual appeal of the staircase.

Remodeling Trends and Staircase Construction

In recent years, there has been a surge in open riser staircase designs, where the space between the treads is left open, creating a sense of airiness and visual lightness. While these designs offer aesthetic advantages, they often necessitate a different construction approach. In some cases, the tread might be installed first, followed by the installation of any supporting brackets or structures for the open riser design.

Conclusion

In standard stair construction, the riser is typically installed before the tread to ensure a tight fit, structural support, and visual appeal. This sequence, while not explicitly mandated by building codes, is considered best practice in the industry. However, in certain design scenarios, such as open riser staircases, the installation order might be reversed to accommodate the specific design requirements. Whether you’re building a new staircase or renovating an existing one, understanding the proper installation sequence is crucial for achieving a safe, functional, and aesthetically pleasing result.