Install Railing Posts on Stairs

What happens in this clip

For railing posts installed on stairs, the installation method is slightly different. Instead of cutting out deck material, the posts can be fastened directly through the stair boards. It's crucial to ensure that there is sufficient structural support for the railing. While using two bolts secured to the outside stair joist may be deemed adequate in some cases, providing a secure base for all fastening bolts will invariably lead to a more durable and stable construction. To attach these bolts, pre-drill holes using the recommended size specific to the type of bolts being utilized. Failing to pre-drill will result in the splitting of the composite material, compromising the structural integrity.

Goal: Securely mount railing posts to stair structure

What's used

Tools

• Drill Bits
• sized to the specific bolts.
• Drill
• Railing Post
• Securing Bolts
• Stair Boards
• Stair Joists

About the full video

This video provides step-by-step instructions on how to install railings on a composite deck, focusing on proper post securing techniques that account for material expansion and contraction. It covers preparing deck boards, creating solid bases for posts, pre-drilling, and finishing with post caps. It also addresses specific scenarios for stair installations and posts over single deck boards.

Step 3 of 11: Attach Railing Posts

Position the railing posts over the pre-drilled holes. Use strong, corrosion-resistant screws or anchor bolts to firmly attach each post to the surface. Ensure the posts are vertical and stable. For wooden stairs, lag screws are typically used. For concrete or masonry, anchor bolts are required. Tighten all fasteners securely, but avoid over-tightening, which could strip the threads or damage the mounting surface.

Open this step in the guide

Other videos for this step

• Install Stair Posts
• Mount and Secure Post with Through-Bolts