In recent years, the decking industry has witnessed a significant shift in homeowner preferences, with metal deck framing emerging as a popular alternative to traditional pressure-treated lumber. This growing demand is driven by a combination of durability concerns with modern wood treatments and the superior longevity offered by metal options.
Today, there are two primary types of metal deck framing dominating the market: galvanized steel and aluminum. Each offers unique benefits, making them compelling choices for homeowners looking to build decks that stand the test of time.
Why the Shift Away from Pressure-Treated Lumber?
For decades, pressure-treated lumber was the go-to material for deck framing, valued for its affordability and resistance to rot and insects. However, the treatments used to preserve wood have evolved significantly due to environmental and safety regulations. Older treatments, which often contained arsenic, were highly effective at preserving wood for decades but were banned because the arsenic was contaminating the soil.
In contrast, the newer, more environmentally friendly formulas have proven less durable. Homeowners are now reporting that their pressure-treated deck frames begin to rot in as little as 10 years—a stark contrast to the lifespan of many modern decking boards, which can last 50 years or more. This mismatch has left many frustrated, as their deck surfaces outlast their underlying frames, leading to costly repairs or replacements.
As a result, metal deck framing has stepped into the spotlight, offering a robust, long-lasting solution that aligns with the durability of today’s premium decking materials.
Galvanized Steel Deck Framing: Strength and Longevity
One of the standout options in metal deck framing is galvanized steel, known for its exceptional durability and resistance to the elements. Galvanized steel framing is coated with zinc to prevent rust and corrosion, ensuring it can last 50 years or more without structural defects.
This makes it an ideal match for high-quality decking boards designed for decades of use. Unlike wood, steel is impervious to termites, carpenter ants, and other wood-boring insects, adding to its appeal.
The market for galvanized steel framing includes both domestic and imported products. Some steel framing is manufactured in the USA, while other options are imported from countries like China, which are currently subject to high tariffs. For those looking to avoid additional costs and support American-made products, AdvantageLumber.com offers New Castle Steel deck framing.
Produced in the USA by New Castle Steel, this framing system boasts a triple-coated galvanized finish for maximum corrosion resistance and comes with an impressive 50-year warranty. Free from tariffs, it’s a cost-effective and reliable choice for homeowners and builders alike.
Aluminum Deck Framing: Lightweight and Low Maintenance
The second major contender in metal deck framing is aluminum, prized for its lightweight construction, resistance to rust, and minimal maintenance needs. Aluminum framing is completely immune to rot, decay, and insect damage, offering a lifespan that rivals or exceeds that of galvanized steel.
Two notable aluminum framing systems available through AdvantageLumber.com are TimberTech Aluminum Framing and Outdure, each with distinct features tailored to different project needs.
TimberTech Aluminum Framing
Engineered for superior performance, TimberTech’s aluminum framing system is designed to provide a flat, stable foundation for decks. It features a Class A Flame Spread Rating, making it an excellent choice for wildfire-prone areas. The system is made from recycled aluminum, enhancing its eco-friendly appeal, and is compatible with all TimberTech decking and railing collections.
TimberTech offers a Lifetime Limited Warranty on major components and a 25-year warranty on fasteners and accessories, ensuring long-term peace of mind. Its lightweight design simplifies installation, and its strength allows for longer spans and fewer posts, opening up creative design possibilities.
Outdure
Outdure’s aluminum framing system is another premium option, known for its modular design and versatility. Originally developed in New Zealand, Outdure focuses on sustainability and ease of installation, with components that work seamlessly together.
While it may require more footings compared to some steel systems due to shorter span capabilities, its rust-proof aluminum construction ensures durability in harsh climates, including coastal regions. Outdure is ideal for homeowners seeking a sleek, modern aesthetic paired with reliable performance.
Both TimberTech aluminum framing and Outdure aluminum framing systems are available through AdvantageLumber.com, providing homeowners with top-tier options to suit their specific needs and preferences.
Important Note: Steel deck framing can’t be used too close to saltwater. For these applications you will need to use aluminum deck framing. Check the manufacturers recommended installation instructions to make sure the metal deck framing you are interested in is suitable for your area.
The Future of Deck Framing
The rising demand for metal deck framing reflects a broader trend in the construction industry toward sustainable, durable, and low-maintenance materials. As pressure-treated lumber struggles to keep up with the longevity of modern decking boards, galvanized steel and aluminum framing offer a solution that bridges the gap.
Whether you opt for the robust, American-made New Castle Steel with its 50-year warranty or the lightweight, eco-friendly aluminum systems from TimberTech or Outdure, metal framing ensures your deck’s foundation is as enduring as its surface.
For those planning their next deck project, AdvantageLumber.com stands out as a trusted supplier, offering high-quality metal framing options that cater to both practicality and performance. As the industry continues to evolve, metal deck framing is proving to be more than just a trend—it’s a game-changer for outdoor living spaces built to last.