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Building a 7-Star Compliant Home -Optimizing windows

Writer's picture: Asef BaqeeAsef Baqee

Hello future homeowners! If you're embarking on the exciting journey of building your first home, let's chat about something super important: windows. They play a pivotal role in making your home energy-efficient, comfortable, and bright.



Why Windows Matter in Home Design

Windows do more than just offer a view—they control how much heat and light enter your home. To achieve a 7-star NatHERS rating, it’s essential to plan your windows carefully right from the start. Optimizing your windows involves considering their orientation, choosing the right glazing, and selecting appropriate frames.


Orientation Matters:

  • North-facing windows: These should have a high Solar Heat Gain Coefficient (SHGC) to let in more heat during the winter. In summer, shading these windows prevents overheating.

  • East and west-facing windows: Use shading devices like deep overhangs to block the hot summer sun during the mornings and evenings.

  • South-facing windows: These typically receive less direct sunlight, so their placement is less critical.


Choosing the Right Glass:

  • Single vs. Double Glazing: While both allow sunlight to pass through, double glazing also helps prevent heat loss, which is beneficial in cooler climates.

By optimizing your windows based on orientation, you can enhance your home’s energy performance significantly. This is especially important if you plan to use thermal mass elements like brick walls or tiled floors, which store and release heat.


Sealing Windows for Comfort and Efficiency

Proper window sealing is key to preventing air leakage, which can cause drafts and temperature fluctuations. Awning and casement windows, which seal tightly, are better at controlling air leakage than sliding windows and doors. Good sealing also helps with noise reduction and moisture control, keeping your home cozy and quiet.


The Role of Window Frames

The type of window frame you choose impacts the thermal conductivity, or U-value, of your windows. Timber frames have lower U-values compared to aluminium frames without thermal breaks, making them better insulators. This is crucial in maintaining comfortable indoor temperatures and improving energy efficiency.


Achieving a 7-Star NatHERS Rating

Most of our clients ask for large windows and minimal eaves – balancing that while meeting the new standards becomes a challenge. Integrating window selection into the early design process is critical, especially for sites with less-than-ideal orientations. Using the right software to assess energy ratings during design is also essential.

By considering all these factors—window orientation, SHGC, glazing, sealing, and frame materials—you can not only boost your home’s NatHERS rating but also create a more energy-efficient, cost-effective, and environmentally friendly home.


Let's Make Your Home Shine

Ready to make your dream home energy-efficient? Remember, planning your windows early and wisely is a big step towards a comfortable and sustainable living space. Happy building!

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