Installing Signature Series Top Mount Cable Railing
Watch this short demo video for step-by-step instructions on installing Signature Series top mount posts.
How difficult is this project?
This project is: DIY-FRIENDLY - ADVANCED
Installing Signature Series posts and cable rail tensioners on level runs is straight-forward. Take special care to consider your post layout around stairs. Advanced carpentry skills may be required for complex handrail joints.
Signature Series top mount posts with cable railing infill are a beautiful addition to any deck, patio, or staircase giving you a cleaner, unobstructed view. If properly maintained, all-metal railing can provide a lifetime of beauty and reliability.
Depending on your project layout and specifications, installation can vary from DIY-friendly to advanced skill level required.
Continue reading or download the installation instructions:
Top Mount Post Setup Guide PDF >
Does your project include stairs?
Check out the guide below for post layout recommendations on stair runs. Consider your project specifications and layout before starting your installation.
Please Note: The Signature Series line post modern top can accommodate stairs with a pitch/slope up to 38-degrees.
Materials List
Supplies:
- Post mounting screws (see Setup Guide)
- Metal tensioner kits (cable end fittings)
- 5/32" diameter cable
- Matching handrail (or add your own custom solution)
- Handrail mounting screws (see Setup Guide)
Tools:
- Drill/impact driver (with 3/16" bit)
- Level
- Tape measure
- 3/16" Allen wrench (use with post-leveling screws)
- 1/8" Allen wrench
- T30 Star driver (driver for post mounting screws)
Installation Instructions
1 | Project Guidelines
- Cable tensioning posts can be spaced up to 20 feet apart. To ensure adequate cable tension (150lbs) use 2-way posts and additional tensioners to cover longer runs.
- Add cable spacer bars or cable support posts every 42–48 inches to minimize cable deflection under load.
- Support your handrail as needed with tensioning or line posts. See Setup Guide for post spacing recommendations.
PLEASE NOTE: All Cable Bullet recommendations and rail components are designed to comply with the International Residential Code (IRC). However, because building codes may vary it is the installer's responsibility to verify that the installed system complies with all applicable state and local building codes. For more information on Cable Bullet and building code standards, visit our terms page.
2 | Mark Post Locations
Determine the placement of your posts, and mark the location of each structural screw (4 per post).
PRO TIP: Use painter's tape to mark the edge and angle of your posts.
3 | Drill Pilot Holes
Set your post aside and drill four pilot holes with the 3/16" drill bit. The depth of your pilot holes will vary by project and foundation construction.
4 | Set Mounting Screws
Set each screw, but don’t tighten them down before leveling the post. Screw lengths and type will vary by application (see Setup Guide for structural guidelines). It is the installer’s responsibility to ensure there is sufficient blocking for secure anchoring.
5 | Advance Screws
Use 3/16” Allen wrench to advance the four set screws to plumb your post, then finish setting each screw. Repeat the process until all structural posts are set.
PRO TIP: The leveling feature is designed to work best on hard surfaces. On soft wood or composite decks, consider adding a post leveling plate or a #10 washer underneath each set screw.
6 | Attach Your Top Rail
Your project is now ready for top rail. Complete this process following How to Install Aluminum Handrail on Signature Series Posts.
