What are the spindles on stairs called?

I’m new to staircase terminology. What are the vertical posts that support the handrail on a staircase commonly called, and what function do they serve?

The vertical posts supporting the handrail on a staircase have a few common names, reflecting both their function and evolving styles over time.

The Vertical Posts:

• Balusters: This is the most general and technically correct term, encompassing all types of vertical posts that support the handrail.
• Spindles: Often used interchangeably with “baluster,” this term sometimes refers more specifically to slender, turned posts, especially in traditional or classic designs.
• Pickets: While more associated with fences, “pickets” can be used for similar vertical elements in deck railings, particularly when made of wood.

Their Vital Roles:

Beyond simply holding up the handrail, these posts serve crucial purposes:

• Structural Support: They reinforce the handrail, preventing sagging or bending under weight. They also contribute to the overall strength of the railing system, ensuring stability against lateral forces.
• Safety Barrier: They act as a protective barrier, preventing falls from the staircase, especially crucial for children and pets. Building codes regulate spacing between them (usually a maximum of 4 inches) to prevent anyone from slipping through.
• Aesthetic Enhancement: Available in diverse styles, shapes, and materials like wood, metal, or glass, these posts significantly contribute to the staircase’s visual appeal. They can complement any architectural style, from simple to ornate.

Additional Terminology:

• Balustrade: The collective term for the entire railing system, encompassing the handrail, newel posts (larger posts at the ends or corners), and the balusters/spindles.
• Newel Post: The main anchoring points for the balustrade, usually more substantial and elaborately designed than the balusters.

A Brief History:

Balusters have a rich history, dating back to ancient times. In ancient Greece and Rome, they were often made of stone and featured elaborate carvings. During the Renaissance, balusters became more decorative and ornate, often showcasing intricate designs and motifs. Today, balusters come in a wide array of styles and materials, allowing for both traditional and contemporary aesthetics.

Conclusion

Whether you call them balusters or spindles, these vertical posts are essential for safety, functionality, and the overall design of your staircase. Understanding their role and appreciating their design potential helps you make informed choices during a remodel or new construction. A well-chosen and properly installed balustrade elevates both the beauty and safety of your home.