HDG Silca Grates are the foundation of a versatile stone deck system that makes it possible to build durable, low-maintenance porcelain, stone, or concrete decks over traditional wood joist framing. These 2-square-foot structural panels are designed to sit directly on top of or between wood joists spaced 16″ on center. Originally developed for residential decks, HDG Silca Grates are now also used in commercial settings. They are especially popular for use under synthetic turf or modular paver systems.
Stone and porcelain decks are no longer limited to low patios or the height limits of pedestal systems. With HDG Silca Grates, you can build beautiful, durable stone decks at any height — right over traditional wood joist framing. Whether you’re renovating an existing deck or constructing something new, HDG Silca Grates open up fresh possibilities for elevated outdoor living spaces finished with stone, concrete, or porcelain pavers.
This system gives architects, builders, and homeowners more design flexibility, without sacrificing strength, performance, or aesthetics.
For optimal performance, use U-Tabs-Flat and U-Pads-Ground (UTF/UPG) on top of HDG Silca Grating Panels to gravity-set porcelain, stone, or concrete pavers.
This method maintains consistent joint spacing for a polished aesthetic while allowing rainwater to drain freely through the open joints. In high-wind conditions, the open-joint design also helps equalize air pressure above and below the pavers, preventing uplift.
See how U-TABS-FLAT and U-PADS-GROUND support stone and porcelain pavers in thin build-up assemblies, as low as 3mm (1/8 in). Includes thickness specs and component breakdowns.
In this wraparound residential deck project, wood joists were topped with HDG Silca Grates and finished with stone-look porcelain pavers. This method allowed the homeowner to enjoy the beauty and performance of stone decking, even in a freeze-thaw climate. The elevated stone deck system provides durability, permeability, and easy maintenance in a scenic, high-altitude environment.
Do you have a project you require a HDG Silca Grates for, or need more product details on stone deck systems? Call 503.360.9551 or Click.
