Designing a Deck

For 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 with LEVEL ENTRY AS1/E2. Designed to AS/ZNS1170 NZS3604 compliant with B1/VM1.

Quick Specs Resources

Building a Deck

For builders, contractors and DIYers; installation of Silca System is super efficient. Silca Grates interlock with one another using our Connectors and screw fix directly to the joists of the deck substructure. Screws and adhesives are also available for supply.  

Install Guide Products

Renovating a Deck

Sick and tired of rotting and splitting wood? 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 patio too!

Inspo Gallery

The Simple Steps of Silca System

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About us

We manufacture and distribute innovative, environment friendly building products.

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.

Read More About us here

“We’re very happy with the end result”

Steve & Vicky / Botany Downs

“Silca paving system for the Granite paver deck turned out to be brilliant and outperformed our expectations.”

Andrew / Kaiwaka

“Very happy with Silca System, saved us a fair bit of $$$$$”

Nick / Whenuapai

“The Silca paving system was excellent to install – 4 hours to install 50+sqm of the Silca grates. – 2 people working on it – one person placing one person screwing them down.

Andrew / Kaiwaka

“Definitely a great system for these applications, no other solution would have beat it.”

Kevin / NSW

“Very easy to Install”

Blair / Holmes Wellington

“The decision to use Silca System® for our new deck was an easy one. We wanted a unique, low maintenance deck but found composite decking far too expensive.”


“The Silca System® substructure and Travertine was an answer to the ongoing upkeep problems we had with our old wood deck. The Silca Grate™ was very simple to install”



Advantages and Benefits of Silca System®

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 aluminium 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 Kwila, Accoya, and other hardwood decking options, and significantly cheaper than elevated concrete slabs. Substantial savings on installation labour.

Versatile: Silca System can be integrated to work seamlessly with both traditional building methods or modern construction systems. 

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 unique 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 maximizes 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.

Flexible Paving Options: Allows for various paving patterns and joint designs, including full grout joints, drainage gaps, and French Laid patterns.

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


Our team has decades of experience in the construction industry, you can be assured we know what we are talking about. 

Aim for same day Shipping

Provided your order is confirmed in the am, we can have it with our dispatch team in the pm and get your order on the way.

Free Quotes

Every job is different, and we can quote specific to your project, pronto!
Contact us and we are on it.

Deliver Quality

We manufacture right here in NZ with an ISO 9001 accredited facility, using strict quality control procedures.
Every batch tested.

Customer Service

Going the extra mile comes naturally to a team passionate about our product and the industry. We offer a level of service other companies cannot.


We are constantly researching ways to improve our products, services and the industry using sustainable technologies and practices.