A Beginner's Guide to DIY Wood Railings

Welcome to the exciting world of DIY deck projects! In this beginner-friendly guide, we'll walk you through the basics of creating a sturdy deck railing with wood posts and rails to finish off that deck you're planning or refurbishing.

Why choose wood?
In addition to providing natural beauty that blends so well with the great outdoors, wood is also easy to work with, making it ideal for DIYers using common and familiar tools. It can be a very cost-effective choice, too, depending on the wood variety you select. Plus, you can customize wood railings with a beautiful stain (or paint, for that matter) and get creative when choosing your balusters—the infill between the rails.

WIld Hog 6 Gauge Mesh Panels
Wild Hog 6 Gauge Mesh Panels

Whatever look you envision for your wood railings, this guide will set you on the right path to creating the perfect railing for your backyard getaway.

A Word About Posts

If you're adding a wood railing, it goes without saying that you need posts to attach it to. Seems simple enough. But the type of deck posts can vary based on the specific design and construction of the deck. There are three common types to be aware of:

  1. Through-Deck Posts: These posts extend through the deck surface and are anchored into the ground below, typically with concrete footings, providing support and stability to the deck structure. Above the decking surface, these posts may be wrapped, or clad, in an additional layer of material to add to their girth, provide protection, and achieve a more finished look.

  2. Surface-Mounted Posts: These deck posts are mounted on the surface of the deck and attached with brackets or other hardware to secure them in place.

  3. Fascia-Mounted Posts: These posts are attached with bolts or screws secured through the post and into the deck's fascia board.

    TIP: Fascia-mounted posts preserve space, maximizing your deck surface.

Through-deck, surface-mount, and fascia-mount posts
Through-deck, surface-mount, and fascia-mount posts

Whether your posts are through-deck, surface-mounted, or fascia-mounted (or a combination) depends on local building codes, the type of soil, the deck height, and the overall design. In many deck designs, through-deck posts serve as primary structural supports, located at the corners, while surface-mounted or fascia-mounted posts are strategically placed between them to provide additional support for the railing system and enhance the overall aesthetic.

For residential decks, a common rule of thumb is that posts should be spaced no more than 8 feet apart. This spacing helps ensure that the railing is adequately supported, maintaining stability and safety. However, local codes may differ, so consult yours for any specific requirements.

Additionally, if you're purchasing infills, the manufacturer may provide recommendations for optimal post spacing. Always follow these guidelines to ensure compliance with safety standards and the best results for your railing project.

Materials for Wood Deck Railing

Following are the basic materials you'll want to gather as you prepare for your DIY wood railing project:

Lumber for Rails and Posts

When it comes to selecting lumber, you have many options. Common and affordable choices like pressure-treated pine, cedar, or redwood offer durability and a classic aesthetic with a moderate level of maintenance.

Stacks of Lumber

If you're seeking a touch of luxury and unique grain patterns, consider popular exotic hardwoods such as Ipe, Tigerwood, or Mahogany for your railings.

TIP: A notable advantage of exotic hardwoods is their natural oils that contribute to resistance against insects and decay.

For traditional posts, choose between 4x4-inch or 6x6-inch lumber, depending on your design preference. 4x4 posts are the most common choice, however, if you're envisioning a large, substantial deck, you may want to consider robust 6x6 posts. If you're planning for fascia-mounted posts, 2x6 or 2x8 lumber can also be used for a unique profile.

For the horizontal rails, opt for 2x4 or 2x6 boards based on your aesthetic and functional preferences. The 2x6 boards, with their broader surface, are ideal for creating a cocktail rail-style top board, providing more space for placing drinks or small items while 2x4 boards offer a thinner, traditional appearance.

Wood post and railing with Key-Link Cable Connectors
Wood post and railing with Key-Link Cable Connectors

Most building guidelines require a minimum railing height of 36 inches for residential decks, but this varies by location. Double-check for any specific regulations applicable in your area.

Balusters or Other Infills

The aesthetic appeal of your wood deck railing is significantly influenced by your choice of balusters or infills—the elements that fill the space between the top and bottom rails. Your wooden railing offers you a lot of creative freedom to personalize your outdoor space just the way you like it... and you certainly aren't limited to wood balusters. Here are some popular options to bring on the style:

Metal Balusters
If you're after a more modern or streamlined vibe, opt for sleek metal balusters. Square and round styles introduce a contemporary touch to your railing, while decorative options can infuse old-world charm. For a visually dynamic design, consider alternating metal balusters with wood.

Deckorators Classic Round Balusters

Shop Meatal Balusters

Mesh Panels
For a distinctive look with increased visibility, explore metal mesh panels as an infill option. These panels provide a unique visual appeal, complementing wood rails with an aesthetic that can range from rustic to contemporary.

Wild Hog 6 Gauge Mesh Panel

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Cable Railings
Providing a sleek and unobtrusive appearance, cable railings are a popular choice that pairs well with stained or natural wood rails. The thin cables create an open feel, ideal for a minimalist look.

Feeney Cable Railing
Feeney CableRail

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Glass Infills
For a touch of modern elegance and uninterrupted views, consider glass infills. These glass panels or pickets provide a sleek and transparent aesthetic, allowing you to enjoy the surrounding scenery without interruption.

DekPro Glass Balusters
DekPro Glass Balusters

Remember, your infills not only contribute to the overall aesthetic of your deck, they're also safety features. Generally, railing baluster and infill gaps, as well as the space between the decking and bottom rail, must not exceed 4 inches wide. As always, check and follow your local building codes.

Shop Glass Infills


You'll likely need a few kinds of connectors, such as wood post anchors or connectors to connect surface-mounted posts to your deck surface and railing connectors to secure the top and bottom rails to the posts. Additionally, if you're using square or round metal balusters, they'll probably require baluster connectors to secure them to the top and bottom rails. If you're installing cables, you'll have fittings for your terminal ends. Together, all your various connectors provide support and stability to your railing system.

DekPro Railing Connector
DekPro Railing Connector

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When it comes to fasteners, stainless steel screws are an excellent choice for their durability and resistance to the elements. For premium corrosion protection and for use in coastal applications, consider hot-dip galvanized structural wood screws.

Starborn Deckfast Stainless and CAMO Hot Dip Galvanized Screws
Starborn Deckfast Stainless and CAMO Hot Dip Galvanized Screws

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Post Caps

Optional post caps are a great way to add a finishing touch while also protecting your wood posts from the elements. Choose from various styles, including flat, pyramid, decorative designs, and lighted or solar-powered caps for a subtle glow at night.

For some inspiration, check out Cap-tivating Post Caps to Suit Your Personality.

Deckorators Victoria High Point and Deckorators Wellington Stained Glass Solar Post Caps Deckorators Victoria High Point and Classy Caps Wellington Stained Glass Solar Post Caps

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Trim Skirts

Covering the gaps between your deck and the bottom of the railing, trim skirts or post bases can be used to enhance the overall finished appearance, protect the bottom of the post from moisture, and prevent pests from taking up residence in those cozy crevices.

Titan Metal Post Skirt
Titan Metal Post Skirt

SHop Post Skirts

Tools to Install Wood Railings

These are the basic tools you should plan to have on hand for your wood railing project:

  • Circular Saw or Miter Saw
  • Power Drill with Bits
  • Level
  • Carpenter's Square
  • Chalk Line
  • Safety Glasses and Gloves

TIP: If you're installing a new wood deck surface as part of your project, be sure to check out the CAMO Marksman Pro Kit that includes the hand drive tool, deck screws, and bits. This edge-fastening system provides an easy DIY installation, time-savings, and a fastener-free deck surface.

Always check the instructions that come with any items you purchase; the manufacturer knows how to get the best results from their product, so if they recommend a certain tool or accessory be used, follow their expert advice.

Basics Steps to Install a Wood Deck Railing

These basic steps will give you a starting point, helping you anticipate what's ahead and begin planning your wood railing installation.

Step 1: Measure and Cut Posts and Railings

Begin your project by determining the optimal lengths for your posts and railings. Consider the following:

  • Post Spacing: Typically, building codes recommend post spacings of 6 to 8 feet; plan your spacing to create a visually balanced railing.
  • Post and Railing Heights: Determine the appropriate height for your posts based on your project's design and local regulations.
  • Railing Lengths: Remember to plan for any overhangs or terminations at the ends of the railing.
  • Material Considerations: Different wood types may have specific cutting recommendations. Be mindful of any guidelines or considerations for your chosen wood variety.
  • Local Regulations: Local codes may vary; always adhere to local building regulations and codes for precise requirements regarding posts and railings.

Use a chalk line to accurately mark your post positions.

Measure and cut posts and rialings

Step 2: Install Posts

Place your posts in the marked locations, securing surface-mounts with connectors and fascia-mounts with corrosion-resistant screws or bolts. Use a level to ensure each post is straight.

Step 3: Add Bottom Rail

Attach the bottom rail board to the posts. Predrill holes for screws to prevent splitting or choose self-tapping screws, and use a carpenter's square to ensure a right angle.

Step 4: Insert Balusters or Infill

Install your chosen balusters between the bottom and top rails with connectors as recommended, ensuring they are evenly placed. Refer to local codes for recommended spacing, as this can vary.

Deckorators Estate Square Balusters
Deckorators Estate Square Balusters

Always refer to the installation instructions provided with your chosen railing infill to understand the proper sequencing and any specific steps required for a smooth installation process before you begin. If you've opted for a metal mesh infill like Wild Hog Railing Panels, for example, you'll need to install the channels to hold your infill by screwing them to the rails and posts.

Step 5: Attach Top Rail

Secure the 2x4 or 2x6 top rail to the posts, completing the framework. Attach the top rail with screws and check for level using a carpenter's level.

Step 6: Add Post Caps and Trim Skirts

Finish your project by adding post caps on top and trim skirts at the bottom of your posts to conceal any gaps between the posts and the deck.

TIP: Apply a clear wood preservative to your post ends before adding caps for extra protection.

Maintaining Your Wood Deck Railing

Congratulations on completing your wood deck railing! To keep it looking its best, remember:

Stain and Seal

Apply a wood stain or sealant to protect it from the elements and enhance its appearance. Follow the manufacturer's instructions and make sure your railing is dry before beginning an application.

Railing treated with Penofin
Railing treated with Penofin

Regular Inspection

Periodically check for loose screws, damaged balusters, or any signs of wear and make timely repairs. For more considerations when evaluating your deck, check out Time for a Deck Check.


A gentle wash with mild soap and water will keep your railing looking fresh. Use a soft bristle brush to avoid damaging the wood and rinse thoroughly to remove any cleaning residue.

Shop Stains & Wood Care

Enjoy Your Deck

With your wood deck railing in place, it's time to celebrate the completion of your project by unwinding in your outdoor haven! Whether hosting gatherings or sipping morning coffee, your deck is now the retreat you knew it could be. Congratulations on the successful transformation of your space—enjoy every moment!

Titan Snap 'n Lock Round Baluster Kit
Titan Snap 'n Lock Round Baluster Kit

Check your local building codes before starting your railing project and follow all rules, regulations, and requirements.