MAIXIMISE THE POTENTIAL SALE OF A NATHERS 7+ RATED DWELLING

KidScreen fall-prevention screens let you model bedroom windows at full openability in NatHERS (avoiding the default 10% restriction), improving natural ventilation, lowering cooling loads and reducing the need for higher-performance glazing — while meeting NCC fall-protection rules and AS5203 testing requirements. Why KidScreen matters for NatHERS assessments Alspec’s KidScreen range is specifically designed and tested to meet the Protection of Openable Windows standard (AS5203) and the NCC fall-prevention requirements; the product brochure lists benefits such as preventing accidental falls, allowing full window ventilation, easy adult egress, and NATA testing/certification. KidScreen is available in reinforced polyester and a 316 stainless-steel mesh option that is explicitly promoted for greater visibility and airflow. Regulatory context you must model to The NCC 2022 requires protection for openable bedroom windows where the fall to ground is ≥2 m , and allows protection to be provided by a screen that resists 250 N and prevents a 125 mm sphere passing through. Where a complying screen is absent, NatHERS assessors must use a default openability of 10% for affected windows unless the design documentation specifies otherwise. How KidScreen changes the NatHERS modelling outcome Because KidScreen stainless‑steel mesh meets the AS5203/NCC performance tests , designers can note on plans that windows with a fall ≥2 m are fitted with compliant KidScreen screens and therefore model the windows at their actual (maximum) openability rather than the 10% default. The stainless option has a much higher open area (manufacturer data shows up to ~72% open area for the stainless mesh), which directly increases modeled ventilation capacity. Thermal and health benefits (evidence-based) Greater window openability increases natural ventilation , which reduces indoor overheating hours and can cut cooling energy use substantially in mixed‑mode operation — studies show larger openable areas and appropriate shading can halve overheating hours and energy use in some climates. Good natural ventilation also reduces stagnant air and the risk of mould growth, improving indoor air quality and occupant health and wellbeing. Cost and compliance advantages From a construction and compliance perspective, screens are typically much cheaper than upgrading glazing or installing high-performance windows . By enabling higher modeled openability and lowering heating/cooling loads, KidScreen can help raise a NatHERS star rating and reduce the need for more expensive glazing upgrades — a practical route to both cost savings and compliance. Practical notes for designers and assessors Document the use of KidScreen (product, mesh type and certification) on the drawings and in the NatHERS notes so assessors can justify non‑default openability in the model. Ensure installation is by a certified installer and that the screen’s test certificates (AS5203 / NATA) are available for compliance records. Consider pairing full‑openability windows with ceiling fans or cross‑ventilation strategies to maximise thermal comfort and reduce mechanical cooling demand. https://ncc.abcb.gov.au/guide/d3d29-protection-openable-windows https://www.kidscreen.com.au/

A New Era Begins — And 10 Star Building Assessments Is Leading the Way Australia’s residential energy landscape is undergoing a major transformation. The Nationwide House Energy Rating Scheme (NatHERS), long trusted for assessing new homes, is now expanding to include existing dwellings — a move set to empower millions of homeowners with clearer insights into their energy performance and upgrade potential. What’s Changing? For decades, NatHERS has provided star ratings for new builds, helping guide design decisions and improve thermal comfort. Now, through a staged rollout, the scheme is being extended to existing homes — offering assessments that consider: Thermal performance based on design, orientation, insulation, and materials Fixed appliances and their energy use On-site solar generation and storage Practical guidance for cost-effective upgrades This initiative is part of a broader push toward mandatory disclosure frameworks, where energy ratings may soon be required at the point of sale or lease. Why 10 Star Building Assessments Is Ahead of the Curve At 10 Star Building Assessments, we’re proud to be part of the NatHERS trial program for existing homes — actively seeking accreditation under the new framework. Our dual expertise as both accredited thermal assessors and experienced builders gives us a distinct advantage in this evolving field. We don’t just rate homes — we understand them. Our assessments are value-engineered to suit the unique characteristics of each existing building, ensuring recommendations are both practical and cost-effective. Whether it’s identifying insulation gaps, optimizing passive design features, or advising on appliance upgrades, our reports are tailored to deliver real-world impact. What This Means for Homeowners With energy bills rising and climate resilience becoming a priority, NatHERS ratings for existing homes offer: Clear benchmarks for energy performance Actionable advice for upgrades Potential access to green loans and incentives Enhanced property value and buyer confidence As the scheme scales up, homeowners will increasingly rely on trusted assessors to guide them — and that’s where 10 Star Building Assessments shines.

Thermal mass refers to the ability of a material to store and release heat energy. It describes the capacity of building materials to absorb heat during the day and slowly release it at night, helping to regulate indoor temperatures. Impact of Thermal Mass in a Dwelling:

Embodied Energy

We have found in recent periods that some certifying authorities are not understanding the requirements around class 3 group home energy compliance. In some instances, the energy assessment has solely been completed (in NSW) as a BASIX and NatHERS assessment. The NCC states that a Class 3 Group home must demonstrate compliance against the NCC Section J.

10 Star Building assessments have invested in the latest technology to assist in completing our inspections to the highest standard.

As a Thermal Energy Assessor and Building Defect Inspector find that I am in a unique position to be able to understand the requirements of a NatHERS certificate and BASIX certificate.