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Key components of high-performance windows
High-performance windows incorporate a range of advanced technologies to minimise energy loss and improve indoor comfort:
Low-emissivity (Low-E) coatings: Ultra-thin metallic layers applied to the glass surface reflect infrared light, retaining heat during winter and repelling it in summer, thereby maintaining consistent indoor temperatures.
Inert gas fills: The space between panes is filled with inert gases like argon or krypton, reducing heat transfer and enhancing insulation.
Vacuum-sealed units: Vacuum-insulated glass eliminates air between panes, providing superior insulation, this is particularly beneficial in extreme climates.
Improved window frames: Frames made from materials such as wood, fibreglass, or composites offer better insulation compared to traditional steel or aluminium frames, which conduct much more heat.
Why more panes of glass?
The number of glass panes affects a window's thermal performance and suitability:
Double glazing: This is the minimum standard and consists of two glass panes with an insulating layer of air or inert gas between them, offering improved insulation and noise reduction, suitable for warm and mild climates.
Triple glazing: This adds a third pane of glass and another layer of inert gas, greatly enhancing insulation and noise reduction, ideal for colder climates.
Quadruple glazing: Includes four panes with multiple layers of inert gas, providing the highest insulation levels, suitable for buildings in extreme environments.
Design requirements to consider when choosing glass
Windows is what connect us to the outside and brings in natural light. Selecting the most suitable glazing depends on climate, budget, availability and project specific requirements. It is important to consider is the window frames as these can be a significant thermal bridge that can create a range of issues. Generally materials with high conductivity is to be avoided to reduce thermal bridges. The below list outlines what to think about for different climates:
Mild and warm climates: Generally double glazing works well to control heat transfer. Consider additional shading elements and orientation of windows to control internal solar gains.
Cold climates: Triple or quadruple glazing effectively minimises heat loss and reduces heating costs.
Passive and net-Zero Homes: High-performance windows are essential to meet stringent energy efficiency standards. Each project require individual assessment of performance based on size, location, orientation and context.
Sensitive spaces: Generally benefit from stable thermal performance and greatly reduced noise with triple and quadruple pane glazing.
Energy-Efficient Retrofits: Upgrading older buildings with high-performance glazing greatly enhances energy efficiency while preserving character. Often bespoke solutions are required for heritage listed properties.
Advantages of High-Performance Windows
Implementing high-performance windows yields several benefits:
Energy savings: Reduced heat loss in winter and heat gain in summer lower the need for heating and cooling, leading to cost savings.
Improved comfort: Enhanced insulation prevents draughts and condensation, maintaining stable indoor temperatures.
UV protection: These windows block a significant amount of harmful UV rays, protecting interior furnishings and art from fading.
Increased Property Value: Energy-efficient windows appeal to eco-conscious buyers, generally boosting resale value.
How we can help
High-performance windows are integral to sustainable, energy-efficient building design.
At SIX xSIXTY Architects, we specialise in energy efficient, environmentally friendlyarchitectural solutions that foster sustainable, healthy environments. Drawingon our design ethos, technical expertise and innovation, we createwell-crafted, quality developments that are designed for a better future.
By partnering with us, our clients can realise innovative, sustainable designs that are advantageous to owners, occupants and the broader community while having a positive environmental impact. We’d love to hear from you to discuss your next project.
