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Terca Brick

Find your very own look from hundreds of exquisite cladding bricks

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Exceptional building products covering the whole building envelope

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Setting the New Standard for Sustainable Building in NZ

100% natural clay block, all-in-one construction system, that simply does it all

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Porotherm Clay Block
near zero energy & maintenance for your whole lifetime.
Warm & Cosy!

Stellaria NZ

Passionate about 100% natural eco-sustainable building materials for every design solution

Our Products

Porotherm Clay Block

Porotherm Clay Block

Confined masonry construction walling system – earthquake and fireproof, thermal, acoustic, breathable for high-performance building.

CLIMAmur Clay Block

CLIMAmur Clay Block

A self-supporting and self-insulating solution, CLIMAmur® requires no additional insulation doubling thanks to its high thermal inertia.

Terca Brick

Terca Clay Cladding Brick

Hundreds of beautiful, unique clay veneer bricks in a wide range of colours, styles, and finishes.

Argeton Facing Tiles

Argeton Clay Facing Tiles

Ceramic rain-screen cladding tiles available in a range of colours, finishes and shapes with simple ‘clip-on’ installation systems.

Penter Paver

Penter Clay Pavers

Over 100 unique clay paving bricks in a wide range of colours, styles and shapes.

Koramic Roof Tile

Koramic Clay Roof Tiles

Clay roof tile, available in a large range of colours, styles and finishes.

Internorm Joinery

INTERNORM Joinery

Triple-glazed joinery manufactured in Austria – warm, quiet and secure for exceptional indoor living.

EzyMix Lime Plaster

Create stunning natural, coloured marble, stone or patterned effects for your interior walls.

New Zealand Projects

Peruwelz Imperium Flavius Brick - project image — Christchurch Terca Project – Imperium Flavius Brick

Queenstown Terca Project - Zwart Zwart Bezand Brick — Queenstown Terca Project – Heteren Zwart Zwart Bezand Brick

Karapiro Boathouse Porotherm Project - link image — Karapiro Boathouse Porotherm Project

Whangapoua Project link image — Whangapoua Argelite Project

Kortemark Mardale Antique Project — Keri Keri Terca Project – Kortemark Mardale Antique Brick

Putaruru Porotherm NZ Project - main image — Putaruru Porotherm Project

Gordonton Terca Project - link image — Gordonton Terca Project

Karapiro Renovation NZ Project - BOEN flooring - main image — Karapiro Renovation Project

What our clients say

“Every day we say how much we LOVE living in our Porotherm house. It has real substance – we sleep so soundly at night and it’s always fresh, warm & dry.”

Deb & Stu Ranger

Putaruru, Sep. 2016

“I would like to thank Chris MacPherson from MacPherson Architecture for introducing us to the Porotherm clay block product. We were looking…”

Chris & Kate Renton

Hamilton, Aug. 2015

“Jon and I have really enjoyed working with Robyn and Chris MacPherson on our boatshed… The Porotherm block certainly fits this space…”

Joanne Leigh

Karapiro, Oct 2018

“We are very thankful for everything you guys have done for us, and we think that everyone should build out of Porotherm.”

Josh & Amy McClaren

Auckland, Mar. 2016

Our Services

ARCHITECTURAL DESIGN

Architectural design services covering all aspects of design.

INTERIOR DESIGN

Interior design covering all aspects of design.

TECH SUPPORT & CONSULTING

Technical support for all Stellaria products and on-site training support.

About Us

We believe every New Zealander deserves a healthy, warm, dry, and beautiful home.

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Wienerberger

Wienerberger is the world’s largest producer of clay bricks and number one on the clay roof tiles market in Europe.

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Get Inspired

Find out more about our projects, Wienerberger’s project around the world, news and more…

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FAQs

Everything you need to know about our products.

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