As Australia moves toward 7-Star NatHERS standards and net-zero energy goals, choosing the right insulation has never been more critical. Traditional fiberglass (FG) batts often underperform due to air leakage, moisture absorption, and installation variability. In contrast, Spray Polyurethane Foam (SPF) creates a continuous, airtight, and durable insulation layer that outperforms conventional methods in every key metric.
🔎 The Evidence
- Superior Thermal Performance
- Closed-cell SPF (ccSPF) delivers 30% higher R-value than FG batts at the same thickness.
- SPF doesn’t sag, shrink, or lose performance over time.
- Air Leakage Control
- Air leakage can reduce FG batt R-value by up to 60%.
- Substituting ccSPF reduces air leakage to 0.1–0.2 ACH, cutting heating and cooling loads dramatically.
- Moisture & Condensation Resistance
- FG batts can lose up to 60% of R-value when wet.
- ccSPF is water-resistant and approved for use in flood-prone areas in the US & UK.
- Energy Savings in Real Homes
- A Habitat for Humanity study found houses insulated with SPF had 95% less air leakage and 68% lower HVAC costs compared to fiberglass.
- Structural Strength & Resilience
- ccSPF increases wall racking strength by 2–3 times and roof uplift resistance by the same factor.
- FEMA identifies ccSPF as the only insulation material resistant to floodwater damage.
- Sustainability
- SPF is made with low global warming potential (GWP) blowing agents, up to 19% recycled content, and delivers 100x the energy savings over its lifetime compared to manufacture.
✅ Benefits at a Glance
For Builders:
- Faster installs, fewer callbacks
- Simplified compliance with NatHERS & NCC 2022
- Prefabrication-friendly (less waste, less timber, smaller wall frames)
For Homeowners:
- Lower power bills (HVAC up to half the size)
- More comfortable, mould-free homes
- Protection in flood and cyclone-prone areas
- Durable, sustainable, future-ready
👉 Conclusion: Spray Polyurethane Foam is more than insulation — it’s a performance upgrade for homes and buildings that ensures comfort, safety, and energy efficiency for decades.
