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Tuesday, April 8, 2025

How to Choose the Best Material for Outdoor Deck Stair Railings

"Outdoor stair ideas" is a trending Google search term… that checks out! After all, many homeowners are commissioning multi-level decks to maximize their usable living space. Well-executed deck stairs, complete with code-required deck stair railing, is key to this vision, ensuring that friends and family can safely navigate the multi-level outdoor living space.

During the design process, it's important that homeowners carefully consider the type of deck stair railing material they want to use to enclose the deck. The material's durability, maintenance requirements and aesthetics will impact how their open-air space performs and looks over time. So, what is the best material to use for deck stair railing? Let's break it down.

A multi-level wood deck with black metal stair railings.

The best material for deck stair railing is durable

It’s hard to deny the rustic charm of wood deck stair railing. But it is just as hard to ignore the downfalls that are typically associated with wood products that are left outdoors. Over time, exposure to moisture will cause wood stair railings to warp, rot and deteriorate (not a pretty sight!). That’s where wood-alternative deck stair railings have the upper hand. Incredibly durable, metal railings made from materials like steel and aluminum offer superior resistance to the damaging effects of moisture absorption. Plus, leading outdoor building product manufacturers offer systems finished with a premium powder coating, adding an extra layer of protection against the elements. To top it off, these metal deck stair railings are typically backed by strong warranties for the homeowner’s ultimate peace of mind in their investment.

An ideal deck stair railing is easy to maintain

Let’s face it—regular maintenance is a hassle that most homeowners would rather avoid. Traditional wood deck stair railing demands ongoing upkeep (sanding, staining and sealing) to stay in top shape. On the other hand, metal railing’s inherent durability directly translates to its low maintenance appeal. A simple wash with soap and water to prevent dirt and build up, followed by a wipe down with a soft towel, is typically all that it takes to keep metal deck stair railing looking great year-round.

An elevated covered deck with black metal stair railings and lighting.White stair railings with glass panels lining a hillside deck.

The right deck stair railing is stylish

Today’s homeowners are willing to pay top dollar to get the stylish deck of their dreams. Each part of the deck design, including the deck stair railing, is integral to unlocking the overall project vision. An on-trend choice, metal deck stair railings can lend their clean lines and geometric shapes to give a more contemporary, minimalist look that opens up views beyond the edge of the deck (just like a builder did for this Nashville duplex). A versatile metal railing can just as effortlessly evoke a more transitional design aesthetic to complement a modern farmhouse-inspired home.

The best deck stair railing is code-compliant

Now, let's shift gears. As with most outdoor home improvement projects, compliance with local building codes is a non-negotiable-this extends to the deck stair railing. So, what is the code for deck stair railing? If a deck is 30 inches or more off the ground, railings are required on the open sides of the deck stairs. In most cases, the deck stair railings need to stand 34-38 inches high, measured from the nosing of the stair treads.

Still, Fortress Building Products recommends getting detailed information about deck stair railing code through the homeowner's local building department or municipal website. Most localities adopt the International Residential Code (IRC) with modifications. DIY homeowners can also consult with a local contractor or inspector-they will be familiar with local regulations.

Modern duplex backyard with black steel stair railings enclosing a deck and plunge pool.Black metal stair railing installed on a sloped backyard.

Looking to incorporate metal deck stair railing into your next deck build? Explore our industry-leading steel and aluminum railing solutions today.

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