Silca Grate

The Silca Grate is the key structural component to the Silca System.

The Silca Grate is the structural foundation of the Silca System, providing a rigid, permeable support surface for external paving finishes. Measuring 400 × 450 × 38mm, each grate screws directly to timber or aluminium framing, with strengthening ribs and hexagonal cells distributing imposed loads across the decking element and onto the supporting joists.

Pre-formed countersunk fixing points guide screw placement, while a secondary fixing row allows grates to be trimmed for installation between joists where additional clearance is required. The free-draining design promotes water drainage and airflow, while the grate’s integrated micro-flex accommodates movement within the supporting structure, helping reduce the risk of tile and grout disturbance.

Silca Grates can be used with natural stone, porcelain tiles, concrete pavers and other external paving finishes across timber joist, aluminium framing, adjustable pedestal and hybrid structural assemblies.

                                                                         
Price $28.00 per grate (excl. GST). RRP. Trade rates available.
Applications         Above membrane, above ground and hybrid structural assemblies.
Finished Surfaces Natural stone, porcelain tile, concrete pavers and artificial turf.
Material UV-stabilised PCABS, manufactured using 100% recycled material.
Key Characteristics Interlocking support grate • Engineered structural component • Compatible with timber joists, aluminium framing and adjustable pedestal assemblies • Manufactured in New Zealand.
Technical Resources               Technical Data Sheet • Product Guide • More Resources
 

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Silca Lock Connector

Lock Connectors secure each Silca Grate to the next on all four sides. 

 

Lock Connectors are specifically designed for use with Silca Grates, interlocking adjoining grates on all four sides to create a strong, continuous decking element. Two connectors are used per side, equating to approximately 3.3 connectors per grate. This connection significantly increases rigidity, stability and consistency across the system, while also providing additional spot adhesion points during tile installation.

Installation is straightforward: push the connectors into the designated slots on each side of the grate, then tap firmly into place with a hammer.

Lock Connectors are specified for installations over floating frames, typically above membrane, where they provide important structural continuity between grates. For installations over a solid timber deck frame, they are not essential, but their use is still recommended to further improve the strength, stability and rigidity of the decking element.

                                                          
Price $1.60 per connector (excl. GST). RRP. Trade rates available.
Application Connecting adjoining Silca Grates within elevated paving assemblies.
Quantity Approximately 3.3 connectors per grate.
Key Characteristics Interlocking grate connector • Maintains alignment between adjoining grates • Designed for use with the Silca Grate.
Technical Resources Technical Data Sheet • More Resources

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Stainless Steel Screw Fixings

Stainless steel fasteners engineered to secure Silca Grates to the substructure.

Stainless steel fasteners engineered to secure Silca Grates directly to timber or aluminium deck joists. Each grate requires six screws, which seat into the pre-formed countersunk fixing holes at the edges of the grate to provide a secure connection. The timber screw is also used for fixing to the Buzon adjustable pedestal.

                                                                              
Timber Joists 10G × 75mm SS304 stainless steel.
Sharp self-drilling tip provides strong penetration and holding strength.
Aluminium Joists 10G × 60mm 410SS WingTek.
Hardened self-drilling screw with WingTek tip for clean penetration into aluminium or light steel.
No pre-drilling required.
Quantity Six screws per Silca Grate.
RRP – Timber $328.74 incl. GST per box of 1,000.
RRP – WingTek $348.00 incl. GST per box of 400.
Key Characteristics Stainless steel construction • Self-drilling fixing options • Designed for the pre-formed countersunk holes in Silca Grates • Timber screws also suitable for Buzon pedestal top fixings.

Trade pricing available. Contact us for a site-specific quote.

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Tile Adhesive – SabreBond SMP45

SabreBond SMP45 is a high-grade, silyl-modified polymer adhesive

SabreBond SMP45 is a high-grade, silyl-modified polymer adhesive specified for spot bonding tiles and pavers directly to Silca Grates. Its high flexibility accommodates movement within the assembly while maintaining adhesion across a broad range of construction materials, including most metals, timber and plastics.

The solvent-free formulation offers high bond strength, excellent UV stability and primerless adhesion to many common substrates. With an elongation at break of up to 700%, SMP45 is suited to demanding external bonding applications.

   
Price $33.45 per 600ml sausage (incl. GST). RRP. Trade pricing available.
Application Spot bonding tiles and pavers directly to Silca Grates.
Pack Size 600ml foil sausage.
Coverage Approximately 2m² per sausage, depending on application pattern.
Key Characteristics Silyl-modified polymer adhesive • High flexibility • 700% elongation at break • High bond strength • Solvent-free • UV stable • Broad substrate adhesion.
Technical Resources SabreBond SMP45 Technical Data Sheet • Wind Uplift Summary

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Buzon Adjustable Pedestals


Buzon DPH adjustable pedestals provide height-adjustable support for Silca Grates in elevated paving assemblies.

Buzon DPH adjustable pedestals provide height-adjustable support for Silca Grates in elevated paving assemblies. Manufactured from durable polypropylene, the pedestal system accommodates varying installation heights and allows the supporting surface to be accurately adjusted to suit the required finished level.

A range of pedestal heights and accessories is available to accommodate different build-up requirements. Buzon pedestals are commonly specified for installations above membrane, including balconies, terraces and rooftop areas.

   
Application Height-adjustable support for Silca Grates in elevated paving assemblies.
Range Buzon DPH adjustable pedestal range.
Material Polypropylene.
Configuration Multiple pedestal heights and accessories to suit installation requirements.
Technical Resources Silca on Buzon Pedestal – Technical Data Sheet •
Silca on Pedestal – Information Sheet

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Aluminium Framing – EconoSpan / SuperSpan

EconoSpan and SuperSpan aluminium framing systems provide a structural support framework for Silca Grates

EconoSpan and SuperSpan aluminium framing systems provide a structural support framework for Silca Grates in elevated paving assemblies. The aluminium joists span between supporting points, creating a stable substructure for the Silca Grate and finished paving surface.

The systems accommodate different span and loading requirements, with EconoSpan and SuperSpan profiles available to suit project-specific structural configurations. They can be used with Buzon adjustable pedestals for installations above membrane, including balconies, terraces and rooftop areas.

   
Application Structural framing support for Silca Grates in elevated paving assemblies.
Systems EconoSpan and SuperSpan aluminium framing.
Material Aluminium.
Configuration Joist profiles selected to suit required spans, loading and support arrangements.
Compatibility Silca Grates and Buzon adjustable pedestal systems.
Technical Resources Silca on EconoSpan – Technical Data Sheet •
Silca Aluminium Frame – Product Combination Specification

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