On May 2025, Western Australia started enforcing the updated National Construction Code (NCC 2022/2025), requiring every new build and major renovation to meet a minimum 7-star energy rating. This isn’t just a box-ticking exercise – it elevates your home comfort, reduces energy bills and lowers emissions. At Formalux, our high-performance double glazed windows and doors help Perth homeowners not only meet but exceed these new WA building regulation windows standards.

Understanding the New Compliance Requirements

Under the updated NCC, new residential homes and significant renovations in WA must achieve a 7-star whole‑house energy rating under NatHERS – a rise from the previous 6-star baseline.
These rules apply to the building fabric (roof, walls, floors, and windows) and household energy use, such as air‑conditioning and lighting.
Window performance is crucial: glazing contributes up to 87% of heat gain and 40% of heat loss, making it a key factor in the energy rating.

Why Double Glazing is a Game-Changer

To comply, homes need fantastic thermal insulation, and nothing delivers like double glazing. Here’s how Formalux helps:

Highly insulated uPVC frames with Low E-glass reduce heat transfer markedly.
Lower U‑values and Solar Heat Gain Coefficient (SHGC) than single-glazed windows.
Uses air-tight seals to reduce reliance on air‑conditioning and heating systems.

With Formalux double glazed windows, achieving a 7-star energy rating becomes far more attainable, whether you’re building new or renovating.

The Formalux Advantage – Retrofit or New Builds

1. Full Compliance with NCC 2022/2025

Our windows meet the NCC’s Double Glazing Requirements WA, ensuring you satisfy fabric requirements for external glazing under Part H6.

2. Fast & Efficient Installation

Retrofit or new builds – our processes ensure a clean, fast installation that won’t disrupt your life. Perfect for major renovations.

3. Sustainable & Long-Term Savings

By improving thermal efficiency, our windows reduce energy use and carbon emissions – helping you live sustainably and save on energy costs.

What Does Achieving 7-Star Efficiency Windows Mean?

More stable indoor temperatures all year round.
Lower operating costs due to reduced reliance on mechanical heating and cooling.
Improved thermal comfort and sound dampening.
Increased property value and resale appeal with energy-efficient features.

Tips to Comply with WA Energy Efficiency Legislation

Choose high-performance glazing: Look for uPVC frames with low U-values and SHGC ratings.
Engage a NatHERS assessor early: Proper design orientation, shading, and glazing choice combine to hit compliance efficiently.
Upgrade during renovations: Retrofitting double glazed windows in Perth is a cost-effective path to legal compliance and long-term savings.

Ready to Upgrade Your Home?

If you’re planning to build or renovate in WA, make sure your project aligns with new NCC energy efficiency laws. Formalux’s solutions are designed to support your journey to a 7-star energy rating while elevating your home’s comfort, sustainability, and value.

Enlisting uPVC window installers in WA who understand the WA building regulation window requirements ensures compliance is seamless and stress-free.

Contact Formalux today to discuss your options, book a consultation, and take a significant step towards legal compliance and a more comfortable, energy efficient home.

Sources:

https://ncc.abcb.gov.au/news/2022/building-7-stars-top-tips-and-guidance

https://codes.iccsafe.org/content/ABCBNCCBCAV2HP2022P12/8-glazing

https://www.wa.gov.au/media/151970/download?inline

https://www.buildi.com.au/ncc-energy-efficiency-requirements/

https://www.stannardhomes.com.au/blog/7-star-energy-rating-western-australia/

https://www.nathers.gov.au/blog/nathers-news-7-march