How can you improve indoor air quality in sustainable construction projects?

2 Control moisture and mold

Another source of indoor air pollution is the growth of mold and mildew due to excess moisture in the building. Mold and mildew can trigger allergic reactions, asthma attacks, and infections in some people. To prevent moisture and mold problems, you can design and construct your building with proper drainage, insulation, and vapor barriers. You can also install dehumidifiers, fans, and exhaust vents to regulate the humidity and ventilation in your building. Moreover, you can use mold-resistant materials, such as metal, tile, or stone, in areas that are prone to wetness, such as bathrooms, kitchens, and basements.

3 Optimize ventilation and filtration

Ventilation and filtration are essential for maintaining good IAQ, as they provide fresh air and remove contaminants from the indoor environment. Ventilation can be achieved through natural or mechanical means, or a combination of both. Natural ventilation relies on windows, doors, skylights, and other openings to allow air flow and circulation. Mechanical ventilation uses fans, ducts, and vents to supply and exhaust air. Filtration can be integrated into the ventilation system to capture and remove particles, such as dust, pollen, smoke, and bacteria. To optimize ventilation and filtration, you can follow the standards and guidelines of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), which specify the minimum requirements for indoor air quality and ventilation.

4 Incorporate plants and greenery

Plants and greenery can also improve IAQ in sustainable construction projects, as they can absorb carbon dioxide, produce oxygen, and filter some pollutants from the air. Plants and greenery can also create a pleasant and relaxing atmosphere for the building occupants, which can boost their mood and productivity. To incorporate plants and greenery into your building, you can use various methods, such as indoor gardens, green walls, green roofs, or potted plants. You can also choose plants that are suitable for your climate, light, and water conditions, and that have low maintenance and pest issues.

5 Monitor and maintain IAQ

Finally, to ensure that your IAQ remains high throughout the life cycle of your building, you can monitor and maintain it regularly. Monitoring can involve measuring and testing the levels of temperature, humidity, carbon dioxide, VOCs, and other pollutants in your indoor air. You can use various tools and devices, such as sensors, meters, or monitors, to collect and analyze the data. Maintaining can involve cleaning and replacing the filters, ducts, and vents of your ventilation system, as well as repairing any leaks, cracks, or damages that may affect your moisture and mold control. You can also conduct periodic inspections and audits to identify and correct any issues or risks that may compromise your IAQ.