Choosing composite decking feels overwhelming. Trust me, I’ve been there. When I built my first deck three years ago, I thought all composite was the same. I was wrong.
There are actually five different types of composite decking. Each serves different needs and budgets.
In this guide, I’ll break down every type of composite decking available today. You’ll learn the key differences between capped versus uncapped, solid versus hollow, and traditional WPC versus newer MBC options.
I’ll also share which type works best for different situations. By the end, you’ll know exactly which composite decking fits your project.
No more confusion. Just clear answers based on real experience.
What is Composite Decking?
Think of composite decking as a mix of wood and plastic.
It combines recycled wood fibers with plastic materials. This creates something that looks like wood but lasts much longer.
Unlike regular wood, composite won’t rot or splinter. You don’t need to stain it every year either. But here’s what surprised me most. Not all composite decking is the same.
There are actually five main types you should know about.
Types of Composite Decking
Let me walk you through each type. I’ll explain what makes each one different and when you might choose it.
1. Capped vs. Uncapped Composite Decking
This is probably the most important thing you need to understand.
Capped composite decking has a plastic shell wrapped around the core. Think of it like a candy with a hard coating.
The cap protects against stains, fading, and scratches.
Uncapped composite decking doesn’t have this shell. It’s the same material all the way through.
Here’s the trade-off. Capped decking costs more but lasts longer. Uncapped is cheaper but might show wear sooner.
I always recommend capped for busy areas like pool decks.
2. Solid Composite Decking
Solid composite is exactly what it sounds like. The boards are completely filled with composite material. No hollow spaces inside.
This makes them heavier and stronger. They’re also quieter when you walk on them.
Solid boards work great for ground-level decks. They’re perfect when you need maximum strength.
But they cost more and they’re harder to carry around.
3. Hollow Composite Decking
Hollow boards have empty spaces running through the center. This makes them lighter and less expensive. But they’re still strong enough for most decks.
The hollow design also helps with drainage. Plus, they’re easier to install since they weigh less.
I’ve used hollow boards on several projects. They work perfectly for raised decks where weight matters.
Just make sure your supports are spaced correctly. Most hollow boards need supports every 16 inches.
4. Wood-Plastic Composite (WPC) Decking
WPC is the original composite formula. It usually contains about half wood fiber and half plastic.
This mix gives you something that feels more like real wood. It’s also easier to cut and install than some newer options.
The downside? WPC can soak up some water over time. This might cause slight swelling or color changes.
Most early composite decks were WPC. It’s still a good choice today.
5. Mineral-Based Composite (MBC) Decking
MBC is the newest type of composite.
Instead of wood fibers, it uses things like calcium carbonate or rice hulls.
This creates a denser, tougher product. MBC usually resists water better than WPC. It also keeps its color more consistently.
Some companies call this next-generation composite. The quality is impressive, but you’ll pay more for it.
Comparing the Different Types
Here’s a simple table to help you compare all the types:
| Type | Cost | Durability | Best For | Maintenance |
| Capped WPC | Medium | High | Most homes | Very low |
| Uncapped WPC | Low | Medium | Budget builds | Low |
| Solid Composite | High | Very high | Heavy traffic | Very low |
| Hollow Composite | Medium | High | Upper decks | Low |
| Capped MBC | Very high | Highest | Premium builds | Very low |
| Uncapped MBC | High | High | Moderate use | Low |
Here’s something most people don’t think about. The brand matters just as much as the type. Some companies make great uncapped boards that beat cheap capped ones.
How to Choose the Right Type of Composite Decking
Which type should you choose? Ask yourself these key questions:
- Budget tight? Uncapped hollow WPC works well but might need replacing sooner.
- High foot traffic? You need capped boards for busy areas.
- Hot, sunny climate? Capped decking resists fading better.
- Upper-level deck? Lighter hollow boards are easier to install.
- Selling soon? Budget options might make sense.
My recommendations:
Most homeowners should go with capped WPC. It offers the right mix of quality and price. Building your forever deck with a big budget? Choose capped MBC.
Tight budget and understand the trade-offs? Uncapped WPC works fine. Avoid uncapped boards if you have harsh weather or a busy household.
Always buy from companies with good warranties. The warranty shows their confidence in the product.
Conclusion
You now understand the five main types of composite decking. That’s more knowledge than most people have when they start shopping.
I wish I had known these differences before my first deck project. It would have saved me time and stress.
Here’s what I want you to do next. Visit your local store or contact three contractors for quotes. Ask specifically about capped versus uncapped options for your situation.
Don’t rush this decision. Your deck will last 25 years with the right choice.
Compare warranties carefully. Get samples to see colors in your actual lighting conditions.
Start your project with confidence. You’ve got the knowledge to make the best choice for your home and budget.
Frequently Asked Questions
How long does composite decking last compared to wood?
Most composite decking lasts 25 to 30 years with very little upkeep. Regular wood decking usually needs replacing after 10 to 15 years, even with yearly staining and sealing.
Can I install composite decking myself or do I need a professional?
You can install composite decking yourself if you’re handy with tools. Most companies provide step-by-step guides, but hiring a pro ensures warranty coverage and proper installation.
Does composite decking get hot in summer sun?
Yes, composite decking does get warm in direct sunlight, but capped versions stay cooler than uncapped. Light colors also reflect more heat than dark shades.
What’s the biggest mistake people make when buying composite decking?
The biggest mistake is choosing uncapped decking for busy or sunny areas to save money upfront. This often leads to early fading, staining, and replacement costs later.
How much should I budget for composite decking per square foot?
Plan to spend $8 to $12 per square foot for quality composite decking materials. Professional installation adds another $5 to $8 per square foot.
