Waterproof Decks

Under Deck, One Step System

Buffalo Construction – Rock Hill, SC’s Trusted Decking Experts

Looking for a deck that stands up to the harshest weather without warping, cracking, or fading? At Buffalo Construction, we offer premium waterproof composite decking featuring the revolutionary Dry Under Deck, One Step System using DuxxBak® mineral-based composite decking. Serving Rock Hill, SC and surrounding areas, we specialize in creating beautiful, durable outdoor living spaces built to last.

Our decking solution is scientifically engineered to resist rain, sun, wind, heat, cold, and even salt exposure. Unlike traditional wood or standard composites that swell, crumble, or fade over time, our DuxxBak composite decking retains its beauty and structural integrity season after season.

Why Choose Our Waterproof Composite Decking?

Key Benefits of DuxxBak® Composite Decking:


  • Industry’s Lowest Moisture Absorption: Outperforms all other composites, including cellular PVC.
  • Color Retention: Capped composite boards resist graying and maintain vibrant color for years.
  • Water-Shedding Design: Signature DuxxBak Dekk® no-drip-through decking keeps your deck dry and comfortable.
  • Durability: Mineral-based composite boards withstand extreme weather conditions better than traditional materials.
  • Low Maintenance: No sanding, staining, or sealing required—just enjoy your deck.
  • Lifetime Limited Warranty: Backed by an industry-leading guarantee for peace of mind.
A wooden deck with a brick wall in the background

The Dry Under Deck, One Step System

Our patented system transforms the underside of your deck into a fully waterproof ceiling, providing shelter and additional usable space below. This system is perfect for Rock Hill homeowners who want a dry, clean, and comfortable outdoor area no matter the weather.

Why Work with Buffalo Construction?

As your local decking experts in Rock Hill, SC, we combine top-tier materials with expert installation to ensure your deck looks stunning and performs flawlessly year-round. Whether you're building a new deck or upgrading an existing one, we tailor every project to your style and needs.

Ready to Upgrade to Waterproof Composite Decking?

Enjoy the beauty of an outdoor living space that defies the elements and requires minimal upkeep. Contact Buffalo Construction today to schedule your free consultation and learn how the Dry Under Deck, One Step System can transform your home.