Premium Quality Roofing, Cladding and Spouting Products

Designed & Tested for the New Zealand Environment

Calder Stewart Roofing is a leading supplier of premium grade roofing, cladding and spouting materials and products, designed and tested for New Zealand settings and environments. Our roofing products have been installed in prominent landmark buildings in New Zealand, including Wellington’s Te Papa Museum, The Invercargill Velodrome and Auckland’s Sky City Convention Centre.

Calder Stewart Roofing’s commitment to supply market-leading products for the roofing industry has driven us to develop innovative roofing systems for architectural and commercial applications. 

Our reputation for quality and innovation continues to be recognised among those looking for the best roofing products and materials available in New Zealand. 

Looking For Technical Documents?

home doc

Calder Stewart Roofing has an extensive portfolio of technical documents Including product CAD files, compatibility tables and material guidelines. This ensures researching & specifying the correct roofing system is a simple process.  


Our Products

Roofing and Cladding

Our high performance profiles, designed specifically for New Zealand settings, are the result of years of ongoing product development.

Fascia Products

Both Paltec Fascia and F180 offer distinctive metallic alternatives to conventional wood treatments.


Flashing solutions supporting our product line.

Spouting Products

A select product group designed to complement Calder Stewart profiles.

Rainwater Heads

Standard & Custom Designed.

Curved Roofing

Crimp Curving
Bull Nosing


Latest News

RoofingSmiths comes to Auckland

Calder Stewart has just appointed a new installer in the Auckland Region.

Steel for Fiji

Together with the Rotary club of Mosgiel, Calder Stewart has run out two container loads of roofing iron for cyclone ravaged Fiji.

John Courtney Bio - news

As part of our growing business & further expansion into the North Island, the team at Calder Stewart Roofing warmly welcome John Courtney.


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