Altherm Windows & Doors

With stylish contemporary lines, effective thermal technology and unwavering attention to detail, Altherm has become a favourite with architects, designers and homeowners across New Zealand.

Altherm offers a wide range of solutions for all homes, from entrance doors to windows, sliders, bi-folds and thermally efficient options. Everything is designed and tested specifically for New Zealand's unique landscape, weather and aesthetics. It's then fabricated and installed by Altherm's network of independently owned and operated manufacturers.