Building for a Greener Future: Embracing Sustainable Materials in Construction
The construction industry and built environment bear a significant responsibility in contributing to greenhouse gas emissions, accounting for approximately 40 percent of global emissions. This underscores the urgent need to reduce the industry's carbon footprint through the adoption of more sustainable building practices.
1. Embrace sustainable building materials
Concrete, the second most used substance on Earth after water, is estimated to contribute to 4-8 percent of global carbon dioxide emissions. To mitigate its environmental impact, the industry should opt for sustainable building materials like reclaimed wood, bamboo, and pre-cast concrete slabs.
2. Reduce waste and use recycled materials
Implementing environmentally friendly practices such as lean construction techniques, optimising supply chain logistics, and minimising material waste can significantly lower emissions. Additionally, reusing and recycling construction waste further reduces environmental impact; and as an added plus, recycled materials often carry a smaller price tag.
3. Invest in renewable energy
Opting for renewable energy remains one of the most effective ways to battle climate change. This can be implemented through the installation of solar panels, air source heat pumps, or small on-site wind turbines during the construction process.
4. Utilise modular construction techniques
Modular construction requires 90 per cent fewer site deliveries which reduces travel-related carbon emissions. It also reduces waste due to precise factory construction techniques.
5. Energy efficient design
Design with environmental efficiency in mind sets you up for lower emissions in the long run. This can be achieved through double-glazed windows, efficient HVAC systems, LED lighting, energy-efficient and water-saving appliances, and building automation systems that optimise energy consumption.
6. Promote green certifications and standards
State and federal governments are constantly looking for ways to encourage greener builder practices through ratings such as the Nationwide House Energy Rating Scheme (NatHERS), which determines a sustainability rating out of 10 stars. The National Construction Code (NCC) also reviews building standards every couple of years, using industry figures and feedback to apply new sustainability rating requirements that builders must adhere to.
7. Urban green space
Green space with native flora provides a range of environmental benefits, including improved air quality, erosion control, and absorption of carbon dioxide which helps offset greenhouse gas emissions. It also invites wildlife to the area, giving the local ecosystem a boost.
By prioritising sustainability and actively adopting these strategies, the construction industry can significantly contribute to reducing climate emissions and building a more sustainable future.
