Windows for New Home Construction in Melbourne: Getting the Right Specification Early

Choosing the right windows for new home construction in Melbourne is a decision that affects energy compliance, long-term comfort, running costs, and the overall quality of the finished home. Windows need to be specified correctly before construction begins because they are installed at a critical early stage of the build and cannot be changed without significant disruption and cost once the structure is in place. This guide covers what the current compliance landscape requires, what the right specification looks like, and what Astellite offers for new home construction in Melbourne.

Why the Window Specification Matters in New Builds

Windows for new home construction in Melbourne must now meet a higher performance standard than was required even a few years ago. The 2022 National Construction Code requires new homes to achieve a minimum 7 star NatHERS rating, and windows are one of the primary variables in whether a home achieves this target.

Windows affect the energy rating through three main pathways. Their U-value determines how much heat transfers through the glass and frame from inside to outside in winter. Their solar heat gain coefficient determines how much solar radiation enters the home in summer and winter. Their air infiltration performance determines how much uncontrolled air exchange occurs through gaps around the frame and between the sash and frame in opening windows.

Specifying windows with poor U-values, inappropriate solar heat gain coefficients for the building’s orientation, or inadequate sealing performance can cause a project to fail its NatHERS assessment at the first attempt, which creates redesign delays and additional costs.

What to Specify for New Home Windows in Melbourne

For most new home builds in Melbourne, the following specification produces strong results across the key performance metrics:

• uPVC frames with multi-chamber construction: German-engineered Aluplast uPVC profiles achieve low frame U-values that support the overall window system performance and contribute meaningfully to the NatHERS rating.
• Double glazing with argon fill: Argon-filled double glazing achieves lower U-values than air-filled alternatives of the same gap width and is the standard specification for quality residential windows.
• Appropriate SHGC by orientation: North-facing windows in Melbourne benefit from higher SHGC to capture winter solar gains. East and west-facing windows benefit from lower SHGC to limit summer heat gain.
• WERS-rated products: Independently verified performance data is required for accurate NatHERS assessments and provides the certifiable compliance documentation needed at practical completion.
• Bushfire compliance where applicable: Properties in BAL-rated zones require windows specified and certified to the appropriate standard.

What Astellite Offers

Astellite manufactures windows for new home construction in Melbourne using German-engineered Aluplast uPVC profiles and high-performance Lightbridge double glazing. Products are WERS-rated and accredited by AGWA, and all products meet Australian building and safety standards. Every unit is custom manufactured to your exact opening dimensions and backed by a 10-year warranty.

The full range includes tilt and turn windows, awning windows, sliding windows, bifold windows, fixed windows, bay windows, corner windows, and custom windows. The complete door range is available for combined supply. Triple glazing is available for projects targeting higher performance levels.

Astellite services new home construction projects in Melbourne, Geelong, Melton, and the Mornington Peninsula.

Get in Touch Today

Contact us today to discuss your new build window specification and arrange a consultation with the Astellite team.