Number One in Design and Inspiration, leaders in thermal excellence

Number One Windows and Doors manufactures and installs industry-leading aluminium windows, doors, and conservatories, which are the pinnacle of quality and performance, with comprehensive installation services executed to the highest standards, ensuring adherence to and consistent surpassing of all current building codes and best practices, for an exceptional client experience.

Trusted Joinery Experts for Christchurch and Canterbury

At Number One Windows and Doors, our team brings over 40 years of combined experience in designing, installing, and delivering high-quality aluminium joinery across Christchurch and Canterbury. We’ve built trusted relationships with leading suppliers to ensure every project is backed by reliable products, expert advice, and skilled installation. From custom conservatories to full home upgrades, we focus on comfort, value, and results that last.