With the introduction of new H1 changes, Low-E glass has become compulsory for almost all homes in New Zealand. Being a relatively new product to the industry we often get questioned on what it is, how it works and whether it is worth the investment.
In this article, we explain what Low-E glass is and the key benefits in a simple, easy-to-understand way.
Low-E stands for low emissivity, which is the ability to radiate energy and reduce heat transfer. So what does Low-E glass mean? Low-E glass is coated with an extremely thin, virtually invisible layer of low-emissivity materials like silver. This coating reflects high temperatures, reducing heat transfer or heat loss through the glass.
Low-E glass essentially works in the same way as a thermos or a piece of tin foil. Instead of heat transferring through a pane of glass from one side to the other, the Low-E coating reflects the heat back towards the source.
This means in summer, Low-E glass reflects the sun’s heat outside, reducing internal heat gain. In winter, Low-E glass reflects heat back into the room, reducing external heat loss.
Low-E glass has higher insulative properties than standard uncoated glass, meaning you can achieve an R-value approximately 50% higher than standard double glazing. This makes those harsh New Zealand temperatures far more comfortable, with your house staying cooler in summer and warmer in winter.
Low-E glass reflects as much of the ultraviolet (UV) and infrared (IR) light as possible back to its source, preventing heat from passing through the glass. This makes your home easier to heat and cool, significantly reducing your energy use and bills. This also puts less demand on the New Zealand power grid and reduces your environmental footprint.
Since Low-E double glazing increases the internal glass surface temperature, it reduces the likelihood of condensation forming on the inner surface. Therefore, your home stays drier and healthier for your family.
When sunlight shines through your windows, it can damage furnishings, carpet, and wallpaper. Fortunately, Low-E windows can protect against UV light while allowing the visible light spectrum to flow through. Compared to standard double glazing, this can achieve a fading reduction of up to 35%.
Low-E coatings are extremely thin and are virtually invisible to the naked eye. This means you will have a clear view outside and have natural light pouring in, creating the warm and beautiful space you’ve been dreaming of.
So what other options can be paired with Low-E glass? Fortunately, the Low-E coating is so thin that it can be paired with the majority of energy-efficient window solutions, including double glazing, thermal spacers, argon gas, and thermally broken frames. With all three combined, your windows can achieve a much higher thermal efficiency.
In summary, Low-E glass increases the energy efficiency and thermal performance of your windows. This helps to keep your home cooler in summer and warmer in winter, creating a drier and healthier living environment. Additionally, the high-tech coating lets light into your home and does not impair the view.
Low-E glass is beneficial for all homes, with the benefits far outweighing the additional cost. There’s a diverse range of Low-E glass performance levels available, tailored to suit your individual home and building requirements. If you have any questions please feel free to contact our team to discuss your specific project requirements.
The glass you choose dramatically impacts the comfort of your space. We explore our full range of glass options below to help you find the best solution for your home.
To achieve the desired aesthetic of your home, you can opt for one of our glass tints, including grey tint, green tint, or bronze tint. This also minimises glare, protects from UV rays, and adds privacy.
Our toughened glass and laminated glass help to keep your family safe and secure, resisting impact and minimising breakages. The New Zealand Building Code mandates that safety glass is used wherever there is a risk of human impact. Our laminate glass also reduces noise transfer and fading inside your home.
Obscured glass, or privacy glass, increases privacy in bathrooms and entranceways. It can also be used to reduce natural light where necessary. Our range of obscures includes Stippolite, Mistlite, Etchlite, and Opalescent.
Browse our full glass range for more information or request a quote from our team today.