Buildings account for a substantial share of global greenhouse gas emissions, energy usage and water consumption; yet they represent one of the greatest opportunities for cost-effective improvements in these areas.
Green buildings are designed to meet evolving environmental standards and deliver value to occupants, owners and the wider community. Their features may include energy-saving fenestration technologies; material efficiency; indoor environmental quality enhancement measures and operational and maintenance optimization optimisation techniques.
Energy Efficiency
Green buildings focus on reducing energy use and carbon emissions while conserving water and prioritizing use of safe materials. They also strive to enhance indoor air quality while connecting people with nature.
LEED, which has become one of the premier green building certification programs worldwide, has led to an industry revolution around green construction practices and sustainability standards. However, many municipalities and countries offer incentive programs and benefits designed to foster green building.
Green buildings can be constructed using various sustainable materials and techniques, from recycling steel to using shipping containers, salvaged timbers and tires repurposed as structures made with sustainable materials that help lower energy and emissions requirements for their production. Sustainable materials also reduce toxic chemical leechout into structures which may affect occupant health negatively.
Water Efficiency
The global building sector accounts for an enormous proportion of greenhouse gas emissions, energy use and material consumption – representing one of the greatest opportunities to lower these impacts cost-effectively and contribute to improved human health and environmental sustainability.
Green buildings utilise eco-friendly designs, materials, and practices throughout their livescycle to minimize their environmental footprint. They employ sustainable approaches for land use planning, energy and water conservation measures, materials selection for indoor air quality enhancement and construction management management to be more environmentally sustainable.
Bullitt Center in Seattle, Washington utilizes heavy timber and natural materials in their original state to avoid exposure to harmful toxins found in commercial finishes. Furthermore, this building utilizes a triple-glazed curtain wall system for temperature regulation. Rainwater collected for reuse is harvested for reuse as rainwater harvesting while organic waste from residents is converted into biogas using anaerobic digestion and reduced landfill waste, carbon footprint and fossil fuel dependence while improving indoor air quality for improved performance and wellbeing.
Materials
Materials used in building construction have an enormous environmental impact. Green buildings prioritize eco-conscious materials like renewable resources, recycled products and low emission finishes to lower embodied carbon in their creation process.
Natural materials like reclaimed wood, plant-based foams and cob are popular choices for green building. Their durability often surpasses that of concrete while their energy footprint is considerably less. Wood has the added bonus of absorption and binding carbon over its lifecycle – both are climate positive.
Green buildings use environmentally-friendly materials like ferrock – an innovative material made of waste steel dust silica and other recycled materials – and mass timber for flooring, walls, ceilings and roofs.
Smart building technology and ventilation solutions are key elements of any sustainable project, helping reduce energy costs and operational expenses, eliminate backup power needs, create healthier indoor environments and meeting sustainability compliance standards while mitigating disruptive climate events.
Indoor Air Quality
Air pollutants like Volatile Organic Compounds, carbon dioxide, and microbial growth are a primary contributor to poor indoor air quality. Source control is key when it comes to green construction: selecting low-emission construction materials and furnishings (like Greenguard Gold paints, formaldehyde-free plywood, and fabrics resistant to microbiological growth) helps control off-gassing of VOCs or chemicals harmful to human health that could release VOCs and other potentially toxic emissions into the atmosphere.
High-performance ventilation systems utilize heat or energy recovery to maximize occupant health without increasing energy consumption, and smart building management systems incorporate IAQ monitoring into HVAC control. Demand-controlled ventilation automatically adjusts ventilation and lighting based on occupancy data to reduce power usage.
Accurate IAQ monitoring is crucial to meeting and sustaining green certification standards like LEED, WELL, RESET and BREEAM. These standards require tracking and reporting real-time IAQ data in order to demonstrate compliance with stringent indoor air quality requirements, while monitoring also helps identify opportunities to optimize ventilation systems without sacrificing performance.