Daylighting is the use of natural light to illuminate building interiors. The concept was notably advanced by Christoph Reinhart, a physicist-turned-architect who applied scientific principles to improve the comfort and energy efficiency of buildings. Today, Reinhart is internationally recognised for his work in daylighting and urban-scale environmental building performance analysis. Design tools developed in his lab are now used by architects and urban planners in over 90 countries.
Daylighting is a fundamental aspect of building design in New Zealand, where diverse climates and a deep connection to the outdoors influence how we create our homes. Natural light does far more than simply illuminate a space – it plays a vital role in regulating our circadian rhythms and biological clocks. Throughout our lives, exposure to daylight affects sleep quality, productivity, alertness, and learning.
Incorporating effective daylighting strategies into our buildings can significantly reduce reliance on artificial lighting, cooling, and heating, lowering both energy consumption and carbon emissions. Harnessing sunlight as a renewable resource also supports New Zealand’s ongoing commitment to sustainable living.
Skylights and sun tubes are highly effective tools for bringing natural light into buildings. They introduce light from above, making them particularly valuable in spaces that lack exterior windows or are located deep within a structure – such as bathrooms, hallways, and stairways.
Skylights, (or roof windows) allow abundant sunlight to flood directly into rooms, reducing reliance on artificial lighting. Sun Tubes (also called light tunnels or sun pipes) capture sunlight through a rooftop dome and channel it down a highly reflective tube to brighten areas that might otherwise remain dim. Both options help create brighter, more inviting spaces while cutting energy costs and promoting a healthier indoor environment.
Strategically placed skylights can harness solar gain during winter, reducing the need for heating and artificial lighting. In summer, they can be managed with shades or other systems to minimize heat buildup.
In winter, Velux’s Double layer of Low-E3 coating increases the window’s thermal performance, trapping in the heat and keeping indoor spaces warm. In summer, their ventilation allows for a blast of fresh, cool air.
The positive effects of daylight on mood and wellbeing are widely recognized in both architecture and lighting design. Facades and interiors that thoughtfully interact with natural light enrich spatial experiences, making environments more stimulating, comfortable, and enjoyable.
Shown here is an example of Suntrenz Sun Tubes installed in a modern kitchen, bringing in natural light that brightens the room.
Modern skylights, like VELUX roof windows, can be opened manually or with remote or solar-powered controls to allow fresh air in and let stale air out. Many models are equipped with rain sensors that automatically close the window when rain is detected, ensuring peace of mind and convenience.
Suntrenz are your trusted specialists in natural daylighting, our team can recommend the best skylight solution for your unique space. Suntrenz skylight roof windows and sun tube products are designed to suit your project needs and seamlessly integrate with New Zealand roofing profiles, delivering a sleek, watertight finish every time. Proudly built for NZ conditions and available nationwide, sun tubes bring vibrant, energy-efficient daylight into your home. With trusted partners across the country and a proud partnership with VELUX, we’re lighting up homes all over Aotearoa.
The Daylight Symposium, hosted biennially by VELUX, brings together a global community of architects, researchers, and building professionals. The conference promotes knowledge-sharing around the powerful role of daylight in creating healthy, sustainable, and resilient buildings.
Learn more here.
