Denver’s Source for Composite Decking That’s Built to Last

Smarter, tougher decking for builders and DIYers who do it right

Get A Free Quote

When you’re ready to build a deck that stands up to Colorado’s sun, snow, and everything in between, composite decking is the way to go. At Mile High Deck Supply of Denver, we stock composite decking materials from the best brands in the business, including Trex, TimberTech, and Deckorators. Whether you’re an experienced contractor or a DIYer planning your first deck, we’ve got the materials, advice, and service to make your project a success.

What is Composite Decking?

Composite decking is a modern alternative to wood, made from a mix of recycled wood fibers and durable polymers. The result is a tough, low-maintenance material that looks like real wood but stands up better to fading, cracking, and rot. Unlike traditional lumber, there’s no sanding, staining, or sealing required. Just install it and enjoy. Whether you’re building a backyard hangout or a commercial space, composite decking delivers the warmth of wood with the strength of advanced engineering.

Benefits of Composite Decking

Wood will always have that timeless, natural beauty, but composite decking takes it a step further with added strength and simplicity. Made from a mix of recycled wood fibers and durable polymers, composite decking materials are built to handle Denver’s wild weather, season after season.

Low Maintenance

No staining, sanding, or sealing required.

Durable in Any Weather

Won’t warp or fade under Colorado’s sun.

Long-Lasting

Backed by manufacturer warranties up to 50 years.

Eco-Friendly

Made from recycled materials that reduce waste.

Style Variety

Choose from modern colors and realistic woodgrain textures.

Our Composite Decking Brands

Not all decking is created equal. We stock brands that pros trust and homeowners love for performance, style, and warranty support.

Trex® Deck Boards

When it comes to composite decking, Trex sets the standard. Their boards are made from 95% recycled materials—a blend of reclaimed wood and plastic—that’s engineered to resist fading, staining, and weather damage. You get the rich look of natural wood without the upkeep.

Trex offers three performance lines, each designed for different needs and budgets:

Trex Transcend®: The top-tier option with a deep woodgrain pattern, ultra-durable shell, and the best fade and stain protection. Ideal for high-traffic decks and premium builds.

Trex Enhance®: A mid-range line that balances style and value with a lightweight design that’s easy to cut and install—great for DIY projects or quick-turn jobs.

Trex Select®: The most budget-friendly option, offering classic colors and reliable performance for straightforward backyard decks or rental properties.

No matter which line you choose, Trex deck boards deliver low maintenance, long-term durability, and that clean, finished look that keeps clients (and homeowners) happy for years.

‍

Special Offer!

Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Get Started Today!

TimberTech® Decking

If you want a deck that looks and feels like real wood but performs better in every way, TimberTech is hard to beat. Their boards feature advanced capped polymer and composite technologies that deliver exceptional fade, scratch, and moisture resistance. You get the natural look of hardwoods without the hassle of sanding, staining, or sealing.

TimberTech offers two main product families to fit your goals and budget:

‍TimberTech AZEK® (Capped Polymer): Premium, high-performance decking made entirely from advanced polymers. It’s ultra-lightweight, completely moisture-resistant, and built to handle Colorado’s unpredictable weather without warping or cracking.

‍TimberTech PRO® & EDGE® (Capped Composite): These lines combine a wood-plastic core with a durable, protective shell. Available in a wide range of woodgrain textures and colors, they offer style flexibility for both high-end homes and cost-conscious projects.

For contractors, TimberTech delivers a premium finish that wows clients and stands up to heavy foot traffic. For DIYers, it’s an easy-to-maintain, long-term investment that looks great year after year.

Deckorators® Decking

Deckorators takes composite decking to the next level with its mineral-based composite (MBC) technology. It’s a unique formula that’s stronger, lighter, and more stable than traditional composites. These boards won’t expand or contract with temperature swings, making them a smart choice for Colorado’s high-altitude conditions.

Deckorators offers several standout product lines for different needs:

Voyage™ Decking: Top-of-the-line performance with exceptional traction (even when wet) and minimal thermal movement. Ideal for mountain homes, lake decks, and commercial installs.

Vista™ Decking: Rich, natural colors and varied woodgrain patterns that give any deck a custom, high-end look.

Trailhead™ Decking: Durable, entry-level composite boards designed for solid performance at a great value.

Every Deckorators product is backed by a limited lifetime structural warranty and a 50-year fade and stain warranty, giving you serious peace of mind.

‍

Special Offer!

Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Get Started Today!

Everything You Need to Build a Beautiful, Durable Deck in One Place

At Mile High Deck Supply, we carry so much more than just deck boards. Our Denver deck supply store is stocked with everything you need to finish your project, from the framing to the final fastener.

• Hidden fasteners and screws
• Matching fascia and trim boards
• Composite railings and lighting
• Joist tape and under-deck waterproofing
• Framing materials, posts, and anchors

Why Buy from Mile High Deck Supply of Denver?

We’re not a national chain. We’re a local Denver deck supply company that actually knows what works here. Our team has been building, supplying, and advising on decks across the Front Range for years—and we only carry products we’d use ourselves. If you’re looking for quality deck supplies, contact Mile High Deck Supply to get a free quote.

Get a Free Quote 303-879-DECK (3325)

FAQs About Composite Decking

Do you deliver materials?

Yes. We offer delivery throughout the Denver metro area and the Front Range.

How do I clean and maintain composite decking?

Composite decking is low-maintenance, not no-maintenance. Just wash it a few times a year with mild soap and water or a composite-safe cleaner. Avoid pressure washing above 1,500 PSI and skip the harsh chemicals—they’re not needed.

How long does composite decking last?

Most composite decking lasts 25 to 50 years, depending on the brand and how it’s installed. Trex, TimberTech, and Deckorators all back their boards with long-term fade and stain warranties, so you can count on decades of performance with minimal upkeep.

What’s the best composite decking for Colorado?

Trex, TimberTech, and Deckorators are the three brands we trust for Colorado decks. With our state’s mix of sun, snow, and altitude, Deckorators and TimberTech lead the way in stability and weather resistance, while Trex remains the original composite brand known for proven, reliable performance.

Can I install composite decking myself?

Absolutely. Many DIYers handle installation with our guidance. We’ll help you choose the right tools, fasteners, and spacing for your design.