If you’re planning to build a deck, you probably think of wood as the go-to material for framing. While wood has been used for decades, it’s not the only option.
Alternative framing materials like steel, aluminum, and composite offer durability, resistance to weather, and low maintenance.
But which one is right for your deck?
Let’s break it all down so you can make the best choice for your home!
Why Consider Alternative Framing Materials?
Wood is the traditional choice for deck framing, but it comes with issues. It can rot, warp, and attract termites. Over time, you’ll have to deal with maintenance like sealing and replacing damaged boards.
Alternative framing materials solve many of these problems by being stronger, more durable, and resistant to moisture, insects, and decay. They may cost more upfront, but they can save you money in the long run because they last longer and require less upkeep.
Steel Deck Framing
Steel is one of the most popular alternatives to wood for deck framing. It’s incredibly strong and can support heavier loads, making it a great choice if you want a large deck or plan to add features like a hot tub.
Pros of Steel Deck Framing:
- Super Strong – Supports more weight than wood and won’t warp or sag over time.
- No Rot or Pests – Steel won’t rot, attract termites, or get moldy like wood.
- Long Lifespan – Can last 50+ years with minimal maintenance.
- Fire-Resistant – A smart option for areas prone to wildfires.
Cons of Steel Deck Framing:
- Higher Cost – More expensive than wood, especially for small projects.
- Heavier to Work With – Requires special tools and knowledge to install.
- Prone to Rust – Needs protective coatings to prevent rust in humid or coastal areas.
Aluminum Deck Framing
Aluminum is another great alternative that’s lightweight but incredibly durable. It’s commonly used in marine environments because it naturally resists rust and corrosion.
Pros of Aluminum Deck Framing:
- Won’t Rust or Rot – Naturally resists moisture and doesn’t decay like wood or steel.
- Lightweight – Easier to transport and install compared to steel.
- Low Maintenance – No need for sealing, staining, or constant repairs.
- Eco-Friendly – Aluminum is often made from recycled materials and can be recycled again when you’re done with it.
Cons of Aluminum Deck Framing:
- Expensive – Even pricier than steel, making it a big investment.
- Limited Availability – Fewer suppliers sell aluminum framing, so it may be harder to find.
- Not Ideal for Heavy Loads – While strong, it’s not as heavy-duty as steel, so it may not be the best choice for extra-large decks or those with heavy features.
Composite Deck Framing
Composite framing is made from a mix of recycled wood and plastic, similar to composite decking boards. It’s designed to resist moisture, rot, and insects while offering the look of natural wood.
Pros of Composite Deck Framing:
- Moisture-Resistant – Won’t absorb water like wood, reducing the risk of warping or decay.
- Low Maintenance – No need to stain or seal; just occasional cleaning.
- Eco-Friendly – Often made from recycled materials, making it a greener choice.
Cons of Composite Deck Framing:
- Not as Strong as Steel or Aluminum – While durable, composite isn’t as structurally strong, so it may not work for all deck designs.
- Can Expand and Contract – Temperature changes can cause slight shifting over time.
- Higher Cost – Costs more than traditional wood framing.
What About Pressure-Treated Wood?
While alternative materials are great, many homeowners still choose pressure-treated wood for framing. It’s cheaper, easier to work with, and widely available. The downside? It requires ongoing maintenance and has a shorter lifespan than steel, aluminum, or composite. If you’re set on using wood, be prepared to stain, seal, and replace parts of the frame over time.
Comparing Strength and Durability
When it comes to framing, strength is everything. The frame is what holds up the entire deck, so choosing a material that can handle heavy weight and constant use is essential.
- Steel is the strongest option. It can support heavy loads without sagging or warping, making it a great choice for decks with hot tubs, outdoor kitchens, or multi-level designs. If you want a deck that feels solid underfoot, steel is the way to go.
- Aluminum is strong but lighter than steel. It’s great for decks that need durability but don’t require extreme weight capacity. For most standard decks, aluminum provides plenty of strength without the added bulk.
- Composite framing is solid but not as strong as steel or aluminum. It works well for smaller decks or lower-profile designs but might not be the best choice for large structures or decks that will support a lot of weight.
- Pressure-treated wood is strong enough for most residential decks but can weaken over time due to moisture, insects, and decay. If you’re planning a deck that needs to last decades without major repairs, an alternative framing material might be the better choice.
Installation: Which Material is Easiest to Work With?
Not all framing materials are easy to install. If you’re hiring a contractor, this might not be a big concern, but if you’re building the deck yourself, it’s something to think about.
- Wood is the easiest material to work with. You can cut, drill, and assemble it with standard tools. If you’re comfortable with basic carpentry, wood is a DIY-friendly option.
- Steel requires special tools and expertise. You’ll need a drill that can handle metal, screws designed for steel, and possibly welding equipment. This isn’t ideal for beginners, but professional builders can install it quickly.
- Aluminum is lighter than steel, which makes handling and installation easier. However, it requires specific fasteners and brackets, so it’s still more complicated than wood.
- Composite framing installs similarly to wood but can be heavier and more expensive to work with. You’ll also need specialized screws and fasteners to ensure the material stays in place.
If you’re planning to build the deck yourself, wood or composite might be the easiest choice. If you’re hiring a contractor, steel or aluminum are great options for a long-lasting, maintenance-free deck.
How Does Each Material Hold Up in Different Climates?
Your climate plays a huge role in choosing the right framing material. Some materials handle moisture, heat, and cold better than others.
- Humid & Rainy Climates – If you live in an area with lots of rain or humidity, aluminum is one of the best choices because it doesn’t absorb moisture or rust. Steel is strong but needs a protective coating to prevent rust in wet environments. Composite is another good choice since it won’t rot like wood.
- Hot & Dry Climates – In desert-like areas, all materials hold up well, but wood can dry out and crack over time. Steel and aluminum stay stable in extreme heat, making them ideal for hot climates.
- Coastal Areas – Near the ocean, salt air can cause corrosion. Aluminum is the best option because it naturally resists rust and corrosion. Steel can work too, but it must be properly coated to withstand salt exposure.
- Cold & Snowy Climates – In freezing temperatures, wood expands and contracts, which can lead to warping over time. Steel and aluminum hold up better in extreme cold, though steel may need anti-rust coatings in areas with heavy snow and ice.
If you’re not sure which material works best for your area, talk to a local deck builder to find out what holds up well in your specific climate.
Long-Term Costs: Which Material Saves You the Most Money?
While alternative framing materials cost more upfront, they save money in the long run because they last longer and require less maintenance.
Let’s compare:
- Wood is the cheapest option initially, but over time, you’ll spend money on repairs, sealing, staining, and replacement boards. In 10-15 years, you may need to replace the entire frame.
- Steel costs more to install but can last 50+ years without major issues. The only maintenance required is checking for rust and reapplying protective coatings if necessary.
- Aluminum is one of the most expensive materials but has almost zero maintenance costs. It doesn’t rust, warp, or rot, meaning you’ll never have to replace it.
- Composite framing is more expensive than wood but cheaper than steel or aluminum. It lasts longer than wood but not as long as metal options.
If you’re planning to sell your home in a few years, wood might be the best short-term choice. But if you want a deck that lasts for decades with little upkeep, investing in an alternative framing material pays off in the long run.
Aesthetic Considerations: Do You Want the Frame to Be Visible?
Most deck frames aren’t visible unless you have an elevated deck where the underside is exposed. If your frame is part of the design, the material’s appearance matters.
- Wood looks natural and blends in with outdoor surroundings.
- Steel has a modern, industrial appearance, which some homeowners love.
- Aluminum looks sleek and contemporary, but most of it is hidden under the deck boards.
- Composite framing looks similar to wood but is often darker in color.
If your deck frame will be visible, consider how it complements your home’s style.
Making the Right Choice for Your Home
Choosing the right deck framing material depends on your budget, location, and long-term goals.
- If you want the lowest cost upfront, pressure-treated wood is your best bet.
- If you need maximum durability and strength, steel is the way to go.
- If you live near the ocean or in a humid area, aluminum is ideal because it won’t rust.
- If you want something low-maintenance and eco-friendly, composite framing is worth considering.
At the end of the day, the best deck is one that fits your needs, lasts for years, and requires minimal upkeep.
How to Choose the Best Framing Material for Your Deck
Picking the right framing material depends on several factors:
- Budget – If cost is your main concern, pressure-treated wood is the cheapest option. If you’re willing to spend more for durability, steel, aluminum, or composite framing may be worth it.
- Climate – In humid or coastal areas, aluminum is a great choice because it won’t rust. Steel works well in most climates but needs extra protection in wet environments. Composite framing resists moisture but can expand and contract with temperature changes.
- Deck Size and Features – If you’re building a large deck or adding heavy features like an outdoor kitchen, steel may be the best choice for support. Smaller decks can do well with aluminum or composite.
- Maintenance Preferences – If you want a “set it and forget it” deck, aluminum or composite is the way to go. If you don’t mind occasional upkeep, pressure-treated wood can work too.
- Lifespan – If you want a deck that lasts for decades with minimal maintenance, alternative framing materials are worth considering.
Is Alternative Deck Framing Worth the Investment?
It depends on your long-term goals. If you plan to stay in your home for years and want a deck that requires little maintenance, investing in steel, aluminum, or composite framing makes sense. If you’re looking for a budget-friendly option, pressure-treated wood may be the better choice, even though it requires more upkeep.
No matter what material you choose, having a strong and well-built frame is key to a safe, long-lasting deck.
FAQ: Building Decks With Alternative Framing Materials
Is steel framing better than wood for decks?
Yes, steel is stronger, lasts longer, and doesn’t rot or attract insects like wood. However, it costs more and is heavier to install.
How long does aluminum deck framing last?
Aluminum framing can last 50+ years with little to no maintenance. It naturally resists rust and moisture, making it a great choice for long-term durability.
Is composite framing as strong as steel?
No, composite framing is durable but not as structurally strong as steel. It works well for smaller decks but may not be the best choice for heavy loads.
Can I mix different framing materials?
Yes! Some homeowners use steel for the main support beams and composite for joists. This can balance cost, durability, and ease of installation.
What is the most affordable alternative to wood deck framing?
Composite framing is often the most budget-friendly alternative, but it’s still more expensive than pressure-treated wood.
Ready to Build Your Dream Deck?
If you’re thinking about using alternative framing materials for your deck, Deck Bros can help! We specialize in designing and building long-lasting decks using the best materials for your needs and budget. Whether you want a traditional wood deck or something more modern with steel or aluminum framing, our experts can bring your vision to life.
Contact Deck Bros today at (402) 369-5724 to get started on your deck project in Omaha, NE!