In an era where energy efficiency and sustainability are paramount, the construction industry is increasingly pressured to deliver homes that meet stringent performance standards. A recent study on air infiltration in newly constructed dwellings across Australia, led by the country\u2019s national science agency, CSIRO, has provided invaluable insights into the state of air tightness in Australian homes. This study not only underscores the importance of rigorous air tightness testing but also highlights the critical role played by ATTMA Australia and its dedicated members in advancing these standards.<\/p>\n\n\n\n
Air tightness is a key factor in determining the energy efficiency of a building. Homes that are not adequately sealed allow uncontrolled air leakage, leading to higher energy consumption, increased heating and cooling costs, and potential issues with indoor air quality. Poor air tightness can also result in drafts, uncomfortable living conditions, and increased exposure to external pollutants. In contrast, buildings with high levels of air tightness are more energy-efficient, provide better occupant comfort, and reduce the overall environmental impact. They also afford more opportunities for effective ventilation, which reliably regulates indoor air quality.<\/p>\n\n\n\n
The study aimed to evaluate the as-built air tightness of newly constructed dwellings in Australia, comparing these findings with the assumed values used in the National Home Energy Rating Scheme (NatHERS) assessments. The results are both enlightening and, in some cases, concerning, revealing a significant variation in air tightness performance across different regions and dwelling types.<\/p>\n\n\n\n
ATTMA ANZ was selected to manage and conduct the air tightness tests for this ground-breaking study. ATTMA ANZ members, certified and rigorously trained, were instrumental in ensuring that all tests were conducted to the highest possible standards, in full compliance with ATTMA Technical Standard L1 (TSL1)<\/a>, closely aligned with ISO Standard 9972:2015. This ensured that the data collected was not only accurate but also consistent, providing a reliable foundation for the study\u2019s conclusions.<\/p>\n\n\n\n Sean Maxwell<\/a>, a director of ATTMA ANZ, ensured that every aspect of the testing process adhered to stringent guidelines. Reflecting on the project, Maxwell stated, \u201cThis study was a significant opportunity for ATTMA Australia to showcase the expertise of our members and the critical importance of air tightness testing in modern construction. The findings highlight both the progress we\u2019ve made and the areas where improvement is still needed.\u201d<\/p>\n\n\n\n Maxwell\u2019s passion for improving building standards is evident in his approach to the project. He emphasized the need for continuous improvement and education within the industry, stating, \u201cIt\u2019s not just about meeting current standards; it\u2019s about pushing the boundaries and setting new benchmarks for what\u2019s possible in building performance. We\u2019re committed to ensuring that the homes being built today are not only energy-efficient but also comfortable and sustainable for years to come.\u201d<\/p>\n\n\n\n The study tested 233 newly built dwellings across Melbourne, Sydney, Brisbane, Canberra, and Adelaide, revealing a wide range of air tightness performance. Apartments generally performed better, with an average air permeability of 5.8 m3\/h\/m2 at 50 Pascals, while two-story houses recorded the highest average air permeability at 8.5 m3\/h\/m2. Some results were alarming, with a few homes showing air permeability rates exceeding 17 m3\/h\/m2. These findings indicate a need for clearer regulations in Australia to ensure that all new homes meet higher standards of air tightness.<\/p>\n\n\n\n Currently, the National Construction Code (NCC) 2022 sets a performance requirement of 10 m3\/h\/m2 for air permeability. However, the study\u2019s results suggest that even this target is often exceeded, particularly in larger homes. Maxwell advocates for Australia to adopt stricter regulations similar to those in the UK, where the maximum permissible air leakage rate is set at 8 m3\/h\/m2 @ 50 Pa. \u201cThe data speaks for itself,\u201d Maxwell noted. \u201cIt\u2019s clear that while we\u2019ve made strides in improving air tightness, there\u2019s still a significant gap between where we are and where we need to be. Adopting stricter standards will not only reduce energy consumption but also improve the overall quality of life for homeowners.\u201d<\/p>\n\n\n\n The involvement of ATTMA Australia in this landmark study is a testament to the global recognition of ATTMA\u2019s standards and the expertise of its members. Barry Cope<\/a>, the Group General Manager of the Building Compliance Testers Association (BCTA)<\/a>, under which ATTMA operates, expressed his pride in the organisation\u2019s global reach and the positive impact it is having. \u201cATTMA\u2019s work is increasingly being recognised on a global scale, and this study in Australia is a perfect example of that,\u201d Cope said. \u201cOur testers are known for their professionalism, accuracy, and commitment to upholding the highest standards, and it\u2019s incredibly rewarding to see that work acknowledged in such a significant way.\u201d<\/p>\n\n\n\n Cope\u2019s comments reflect the growing influence of ATTMA beyond the UK, where it was originally founded. With divisions in Europe, Asia, and now Australia, ATTMA is playing a pivotal role in setting global benchmarks for air tightness testing. \u201cOur goal has always been to promote best practices and improve building standards worldwide,\u201d Cope continued. \u201cSeeing our members contribute to such important work in Australia, and knowing that their efforts are helping to shape better, more sustainable building practices, is truly gratifying.\u201d<\/p>\n\n\n\n The findings from this study not only provide a snapshot of current building practices in Australia but also highlight the need for ongoing education and innovation within the construction industry. While the average air permeability of new homes has improved compared to past studies, there is still considerable room for improvement, particularly in the design and construction of larger homes.<\/p>\n\n\n\n Maxwell and his team at ATTMA Australia are committed to driving this improvement through continued education and training for builders and contractors. \u201cOne of the key takeaways from this study is the importance of getting it right from the start,\u201d Maxwell explained. \u201cBy educating builders and contractors on best practices for achieving air tightness, we can help ensure that the homes being built today are of the highest possible quality. One of the encouraging things is that results hinge less on which brand of product is used, and more on some basic attention to detail. This means the power is often in the hands of builders to make big improvements.\u201d<\/p>\n\n\n\n In addition to education, Maxwell believes that innovation will play a crucial role in improving air tightness standards. \u201cTechnology is advancing rapidly, and we need to be at the forefront of these changes,\u201d he said. \u201cWhether it\u2019s through new materials, better construction techniques, or more accurate testing methods, there\u2019s always room for innovation in this field. ATTMA is committed to exploring these new avenues and incorporating them into our work.\u201d<\/p>\n\n\n\n The CSIRO study on air infiltration in new dwellings in Australia is a critical piece of research with far-reaching implications for the future of building standards in the country. The involvement of ATTMA Australia and its members was instrumental in the success of the project, providing the data and insights needed to push for higher standards in air tightness.<\/p>\n\n\n\n The findings from the study make a compelling case for the Australian government to adopt stricter air tightness regulations, similar to those already in place in the UK and much of North America. By doing so, Australia can ensure that new homes are not only more energy-efficient but also provide better comfort and health outcomes for their occupants.<\/p>\n\n\n\n As the push for greener, more efficient buildings continues, ATTMA Australia remains at the forefront, leading the way in testing, certification, and advocacy. The efforts of Sean Maxwell and his team have not only contributed to a vital piece of research but have also laid the groundwork for future improvements in Australia\u2019s building practices. With the support of global organisations like the BCTA, ATTMA Australia is well-positioned to continue driving change and setting new benchmarks for building performance.<\/p>\n\n\n\n In the words of Barry Cope, \u201cThis study is just the beginning. With the dedication and expertise of our members, we\u2019re confident that we can continue to make a real difference in building standards around the world.\u201d It\u2019s clear that building airtight homes is not only achievable but necessary, and ATTMA Australia is proud to be leading the charge.<\/p>\n\n\n\nKey Findings: A Call for Stricter Regulations<\/h3>\n\n\n\n
The Global Impact of ATTMA\u2019s Work<\/h3>\n\n\n\n
The Path Forward: Education and Innovation<\/h3>\n\n\n\n
Conclusion: A Call to Action<\/h3>\n\n\n\n