Welcome to Silca System
Silca System interlocking, structural deck grates are specifically designed for the support of heavy finished surface materials over elevated deck structure.
Manufactured in New Zealand from 100% recycled materials, our grates offer a robust, durable solution for installing tiles or pavers at any elevation.
Silca Grates connect together and are securely fastened directly to timber or aluminium deck joists. This provides a solid, flat, permeable surface to install various paving materials such as tiles, natural stone, heavy pavers, artificial turf or porcelain.
Silca System enables a free draining finished surface and air circulation beneath, preventing moisture buildup in the substructure and ensuring the longevity of the decking element. Suitable for standard elevated decks or those floating over membrane,
Compliance to B1/VM1 and B2 of AS/NZS1170.1. and E2/AS1 Permeable surface – level entry through threshold. Silca System is an environment-friendly patio solution for both residential and commercial applications.
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Designing a Deck
Architects and designers, Silca System can be incorporated into almost any deck design. Achieve a PERMEABLE tiled patio on standard timber or aluminium deck framing.
LEVEL ENTRY E2/AS1. Designed in accordance with AS/ZNS1170.1. NZS3604 compliant with B1/VM1, B2.
Building a Deck
Builders, contractors and DIYers; installation of Silca System is super efficient. Silca Grates lock together using our Connectors and screw fix directly to the joists of the deck substructure with our Stainless Steel 10gx75mm CS . Screws and adhesives are available for supply.
Renovating a Deck
Sick and tired of rotting and splitting wood? Popping nails, pealing paint or fading stain? Forget about the continuous maintenance hassles and ongoing costs of wooden decking. If your joists are still in decent condition, with a bit of TLC, you can have a solid low maintenance tiled patio too!
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Key Features & Benefits
Versatile Applications
Ideal for decks, patios, stairs, ramps, paths, bridges, docks, pool areas, and various residential and commercial projects.
Innovative Construction Product
A revolutionary and unique system supporting any type of paving on timber or aluminum deck joists.
Environmentally Friendly
Made from 100% recycled materials, offering a sustainable alternative to hardwood decking.
New Zealand Made
A trusted product originally established in the USA and Canada, now manufactured locally in New Zealand.
Maintenance-Free
Provides a durable, raised patio without the ongoing maintenance required by wooden decking.
All-Weather Durability
Maintains strength in extreme climates, from the Southern Alps’ snow and ice to North Queensland’s tropical heat and moisture.
Reduced Fire Risk
With non-combustible pavers, it prevents hot ash or embers from igniting the deck. A fire-retardant Silca Grate rated V-0 is available upon request.
Cost-Effective
More economical than hardwood decking options, and significantly cheaper than elevated concrete slabs. Substantial savings on installation labour.
Easy Installation
Quick to install, making it accessible for builders, contractors, and DIY homeowners.
Creative Design Flexibility
Supports various tile layout and pattern designs with multiple fascia options, allowing for unique outdoor spaces that enhance property value.
Superior Load-Bearing Capacity
The engineered design of Silca Grate cells supports heavy loads, preventing paver cracking or failure under heavy foot traffic or furniture.
Effective Load Distribution
Distributes load evenly across the joists and structure, providing robust support.
Adaptable Cutting
Easily cut around obstacles without compromising structural integrity, ensuring continuous support for cut pavers.
Enhanced Ventilation
Minimal surface contact between Silca Grate and joists maximises airflow, aiding in ventilation and drying of the subdeck structure.
Structural
Acts as a structural component, reducing the need for nogging and supporting heavy surface laminates.
Solid, Flat Surface
Provides a stable base for nearly any type of paving, ensuring a smooth and reliable surface with a firm feel underfoot.
Our Values
These values guide every project we deliver — from design to installation.
Experience
With decades of construction experience, our team understands what works — and what lasts.
Aim for Same Day Shipping
Orders confirmed by morning are dispatched the same day to keep your project moving.
Free Quotes
Every project is unique. We’ll provide a tailored quote — quickly and accurately.
Deliver Quality
NZ-made in an ISO 9001 facility. Every batch tested for strength and consistency.
Customer Service
Our team genuinely cares about results. You’ll always speak with someone who knows your project.
Innovation
We’re constantly refining our systems and materials to deliver better, more sustainable solutions.
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