Altherm Northland Limited is a Whangarei based company that supplies high quality aluminium joinery for all types of building projects. Altherm has been supplying joinery for over 40 years throughout Northland and Auckland and has gained a reputation of quality that builders and architects have come to trust.
We have a large factory with the latest manufacturing equipment combined with an experienced team that enables us to take on large scale multi-level commercial projects, high end residential houses through to homeowners wanting to upgrade their joinery.
We are proud members of the Window and Glass Association of New Zealand (WGANZ) with over 40 year’s experience in the industry.
Residential or Commercial,
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Sustainability Accreditations
Being part of the country's largest supply chain of manufacturing windows and doors, we believe we have a responsibility to improve the way we do things and reduce our environmental impact.
We're proud to supply product from APL Window Solutions, our ranges meet a number of sustainability benchmarks.
