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 deck framing with LEVEL ENTRY. See specs and stats below

Specs & Stats

Building a Deck

For Builders, Developers and DIYers; installation of Silca System is super easy. Silca grates sit on top of the joists at 400mm centres and fix down with 6 screws per unit. Done.

Installation Guide

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!

The Simple Steps of Silca System

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Who We Are

We manufacture and distribute innovative, environment friendly and sustainable building products.

Welcome to Silca System

Silca System is a 400x450x38mm, 100% Recycled, engineered polycarbonate grate which is screw fixed directly to the joists of a standard timber deck construction, or to floating joist system for over membrane or slab. It provides a flat, braced surface on which to lay almost any kind of paving material, whether it be concrete pavers, porcelain, travertine, tiles, brick, natural stone or the many other options available in the market today.

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“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”




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.

Advantages and Benefits of Silca System®

  • Silca System is a highly innovative, revolutionary, one of a kind construction product
  • Silca System is the only product on the market which supports any kind of paving on timber joists, with options for on membrane and ground applications
  • Silca System is designed to keep super strong in any climate! From the snow and ice of the Southern Alps to the tropical heat and moisture of North Queensland and the Pacific Islands!
  • Silca System provides reduced Fire Risk! With non-combustible pavers on top, it does not allow falling hot ash or embers to smoulder into the deck and substructure. We also offer a Fire retardant Silca Grate rated V-0 upon special order.
  • Silca System (including paving) is more economical than Kwila, Accoya and other hardwood decking, and is over 100% cheaper than the construction of an elevated concrete slab (the only other existing way to have paving at height)
  • Silca System is manufactured from 100% recycled materials, allowing for a more environmentally friendly deck/patio as opposed to unsustainable hardwoods
  • Silca System used in conjunction with pavers, provides a maintenance free, durable raised patio, without the continuous maintenance hassles and ongoing costs of wooden decking.
  • Silca System can be used for a wide variety of applications: Decks, Patios, Stairs, Ramps, Paths, Bridges, Docks, Around Pools, Commercial and Civil Applications