HOW-TO GUIDES

How to Install Trex Enhance™ Steel Railing

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Railing adds both safety and visual appeal to your outdoor deck design. Installing this essential piece of your deck's puzzle may seem like a challenge, but with our expert advice, you can get the job done.

If you're preparing to install Trex Enhance™ steel railing, use this expert guide from our How-To Team to avoid unnecessary setbacks as you install posts, panels, and stairway railing.

Disclaimer: Instructions provided by Trex® are based on the build specifications that Trex® demonstrated in the Trex® Academy video series and are not universal to all homeowners’ projects. A homeowner’s build may vary from Trex’s instructions based on the homeowner’s local municipality requirements, individual design preference and project specifications. For questions or assistance needed during your project, please reach out to howto@trex.com.

Step-by-Step Instructions
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Chapter 01: How to Install a Trex Enhance™ Steel Railing Post

Ready to get started? Watch our how-to tutorial before starting your build.

Before you begin any DIY project, make sure to wear the appropriate personal safety equipment. Eye protection, ear protection, gloves, long pants, a long-sleeved shirt, and reinforced toe shoes are recommended. Always make sure that you have a first aid kit nearby. For any home project, be certain to follow local code and permitting requirements.

Step 1

To begin, you'll first install your braces and blocking. Before you start blocking, remember to check your railing panels to see if you're installing each post at the correct interval. Trex Enhance® Steel Railing comes in either six- or eight-foot lengths, so it’s essential to make sure your measurements align with your selected panels.

For corner posts, you'll need to install a 2x8 cross-bracing frame in between joists at 7 1/4" (18.4 cm). Once your frame is in place, attach using 12 three-inch pressure-treated-compatible screws.

Step 2

After your frame is placed, you'll install two 2x8 boards as blocking under each corner post location. Securely attach your blocking using a total of 24 three-inch pressure-treated compatible screws. Using the right number of screws is key to ensuring a secure fit.

Pro Tip

For easier attachment, use two additional screws to "sandwich" blocking boards together.

Step 3

Repeat steps one and two until all post locations have been cross-braced and blocked. Once this is complete, you may install your preferred Trex decking material over your framing.

Step 4

After the decking has been installed, you can resume installing posts. For corner posts, make sure your posts are placed at least 1" in from both inside frame edges.

Use your post as a guide and mark the locations of the holes you'll need to drill. Then, set your post aside and drill through both the decking and blocking boards on your marked points with a 9/16" drill bit.

Pro Tip

To help maintain a 90-degree angle, use a speed square as a guide.

Step 5

Once your holes have been drilled, align your post base with them and attach the post using four 1/2" by 6" hex cap bolts, washers, and nuts. For IRC or IBC compliance, consult local code officials.

Step 6

Use your level to check if your post is plumb as you tighten your hex bolts. Check multiple sides to ensure your leveling is accurate.

Step 7

After railing panels have been installed, add post caps and skirts to each post by snapping skirts into place and tapping the post caps with a rubber mallet.

Before installing your panels, double-check that they align with your posts' clear span. If you have purchased blank railing posts, you will need to add the necessary brackets before starting panel installation.

Step 1

Start by placing your panel between two posts to check that your end balusters are an equal distance from your posts. Mark your panel with a pencil where it lines up with your post. Make sure to leave a minimum of 1.5" on each side of your panel from post to balusters so your brackets can be properly attached later.

Step 2

Use a circular saw with a metal blade to cut both the top and bottom of each end of your railing panel 1/4" shorter than where you marked previously. This will allow for a proper fit of your panel into the post brackets.

Pro Tip

Clear out metal particles after cutting and paint cut ends with paint approved for exterior steel surfaces.

Step 3

Place your cut panel into the bottom and top brackets on your post. Then attach using the provided #12 x 3/4" self-drilling screw.

Pro Tip

Trex Enhance® brackets are designed for screw installation on either side. Use whichever side you prefer, or that is easier to access.

Step 4

After the brackets are attached, spread and snap the bracket covers into place on both top and bottom rails. Then attach post skirts and caps.

Before you begin your stair panel installation, make sure your posts are installed at the right heights directly above the required blocking. Use a 53" stair post to accommodate stair height, then cut posts to length after your final railing height is established.

Step 1

Begin by placing a 1" deck board on the stair treads between your posts to act as a spacer board. Then, place your stair panel on top of this board.

Stair panels come perpendicular and will need to be racked to get the right post angle. Move your panel to the right angle by pushing the panel on top of your spacer board until the balusters are parallel to your posts.

Once aligned, check that your balusters are straight and equally spaced, then clamp your panel to your post.

Pro Tip

Make sure to leave enough space between your post and baluster on both ends of your rail panel for bracket attachment.

Step 2

Once you've clamped your panel down, you can start attaching your swivel brackets. Line up your brackets with the top and bottom railing of your panel. To ensure your alignment is correct, mark a light line at the top of each swivel base with a pencil.

Center your brackets on each post below your marked lines and attach using two provided #12 x 3/4" self-drilling screws. You may need a 90-degree angle drill adapter to install brackets on lower posts. In this case, it's better to mount your base plate first and then attach the bracket itself after.

Step 3

After you've installed your brackets, mark the top and bottom rails where they align with the rear wall of their corresponding brackets. Then, unclamp your railing and remove it for cutting. If necessary, you can unrack your panel and return it to a perpendicular position for cutting.

Step 4

Before cutting, extend the marks you made in step three to the sides of your railing. Using a circular saw with a metal blade, cut the ends of your rails 1/16" shorter than your mark on both sides to ensure a proper fit in your swivel brackets.

Step 5

After your panel has been cut to size, attach it to your brackets using one of your provided #12 x 3/4" self-drilling screws on one side of each stair bracket. Drill screws on the side you prefer, or that is easiest to access.

Step 6

After brackets are screwed in, spread and snap the corresponding bracket covers into place on both top and bottom rails. Then attach post skirts and caps.


Tool List

  • Minimum 18-volt drill
  • 9/16" drill bit for wood
  • T25 bit
  • Tape measure
  • Level
  • ¾" wrench or socket
  • Pencil
  • Rubber mallet
  • Clamp
  • Circular saw with a metal blade

Materials List

  • 2x8 pressure-treated southern yellow pine (or equivalent) blocking
  • 3" pressure-treated compatible wood screws
  • ½"- #13 x 6" galvanized steel hex bolts
  • ½" inside diameter, ⅜" outside diameter galvanized steel flat washers
  • 1/2"- #13 galvanized steel hex nut
  • Trex Enhance™ steel post with brackets
  • Trex Enhance™ steel panel
  • Trex Enhance™ steel panel hardware
  • Trex Enhance™ steel stair panel


(NOT ALL PRODUCTS ARE AVAILABLE IN EVERY COUNTRY.)

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