HD² Technology

HD² stands for High Definition and High Density, a proprietary Techo-Bloc manufacturing technology used in drycast products. It creates surfaces that are ultra-smooth, densely packed for a virtually poreless surface and greater resistance to de-icing salts. HD² enhances both the look and performance of luxury concrete pavers and slabs.

No. HD² is used across pavers, patio slabs, wall caps and pool copings. It’s featured in many of Techo-Bloc’s most modern collections, such as the Industria, Blu HD², Para slabs and Raffinato cap lines.

No. HD² and Klean-Bloc™ are distinct technologies. HD² enhances color and texture in drycast products, while Klean-Bloc™ offers integrated stain protection for wet cast pavers. Products are either one or the other—not both. To improve HD2 products stain resistance, a sealer can be applied after a thorough post-construction cleaning.

No. The HD² process improves surface performance without changing the size or weight of the product. These high-density concrete pavers remain within Techo-Bloc’s standard dimensions, making them compatible with existing installation techniques and base structures.

HD² products are up to 1.5 times stronger than the industry standard of 8000 psi. This added compressive strength comes from a denser fusion of fine and coarse aggregates. The denser surface also reduces absorption of liquids which helps with freeze-thaw durability.

HD² creates a tighter surface matrix with minimal pores, significantly increasing resistance in freeze-thaw climates or around salt-water pools.

HD² technology dramatically reduces surface porosity, resulting in low water absorption rates. Less water means increased resistance to freeze-thaw damage, salt-water pools, mold, and embedded staining.

Despite their ultra-smooth appearance, HD² pavers are engineered to maintain excellent slip resistance. Most surfaces meet or exceed ANSI A326.3 slip resistance standards, making them ideal for both residential and commercial pool decks, patios, and walkways.

HD² is ideal for driveways that handle heavy vehicles. With superior compressive strength and reduced flexural weakness, products like Blu 80 mm HD² and Industria 100 mm HD² are built for driveways, parking areas, and even commercial streets.

No special installation is required. HD² products follow standard drycast installation protocols. Due to their virtually flawless finish, lighter colors may show debris and staining more easily than standard or high-blend colors; therefore, the application of a protectant or sealer is highly recommended post-installation.

HD² surfaces are crafted with thermodynamically stabilized pigments, which resist UV fading and chemical wear. The result is vibrant, long-lasting color, even in harsh climates with intense sun or acid rain.

The high particle density of HD² pavers enables exceptionally detailed, refined surface textures. Whether you’re looking for ultra-smooth driveway pavers like the Sleek pavers or Industria 100mm pavers, natural stone alternatives designed to handle vehicular traffic like the Blu 80mm paver in HD² slate or a natural stone look with Everest slab on your patio, this collection answers every need.

HD² surfaces are easy to maintain thanks to their low porosity and dense finish. Use diluted dish soap and warm water with a broom or gentle brush. Avoid wire brushes and harsh acids. For tougher stains, professional-grade cleaners like those from Prosoco are recommended. Lighter colors will make stains and debris more apparent. A post-construction sealer will protect pavers from stains and make them easier to clean.

HD² products support sustainability by contributing to LEED credits through their solar reflectance index (SRI) and heat island reduction potential when choosing light colors like beige cream and greyed nickel. Light colors like Pure White and Silver Granite offer the highest reflectance.