What types of hazardous building materials in construction are there?
Asbestos
Once a construction industry staple due to its insulating and fire-resistant properties, asbestos poses severe health risks when its microscopic fibres are airborne. Despite widespread awareness, the legacy of asbestos in older buildings requires careful handling and removal during renovation or demolition.
Lead
Present in various construction materials, including lead-based paints, lead pipes, and lead-based solder used in plumbing systems, lead is a hazardous substance known for its detrimental health effects, especially in children. It persists in older structures, particularly in lead-based paints, and requires proper remediation to protect public health.
Mercury
Widely used in fluorescent lights and thermostats, mercury is a toxic heavy metal with potential health and environmental implications. Inhaling or ingesting mercury vapours can damage the nervous system, so responsible handling and disposal are essential.
Formaldehyde
Found in adhesives and pressed wood products, formaldehyde poses health risks including respiratory problems and carcinogenic effects. Proper ventilation and low-emission building materials help reduce indoor formaldehyde levels.
Polychlorinated Biphenyls (PCBs)
Historically used in electrical equipment and insulation, PCBs are persistent organic pollutants linked to adverse health effects. Although phased out in the late 1970s, materials containing PCBs still require careful handling and disposal due to their environmental persistence.
Radon
A naturally occurring radioactive gas, radon seeps into buildings and poses a health risk with prolonged exposure, which is linked to increased lung cancer risk. Testing and mitigation measures such as ventilation systems can reduce exposure.
Chromium
Present in paints, wood preservatives, and cement, chromium, especially hexavalent chromium, poses significant health risks upon inhalation or skin contact. Proper safety measures and awareness are crucial in construction settings to protect workers and inhabitants.
Silica
Found in construction materials like concrete and sand, as well as engineered stone (a.k.a. agglomerated stone) which was banned in Australia in December 2023, silica dust causes diseases such as silicosis when inhaled over time. Dust control measures including ventilation and personal protective equipment are essential on construction sites.
Volatile Organic Compounds (VOCs)
Found in paints, adhesives, and solvents, VOCs contribute to indoor air pollution and associated health issues. Low-VOC or VOC-free products, adequate ventilation, and air quality monitoring help reduce exposure in buildings.
Polyurethane Foams
Some construction foams may release harmful chemicals that affect indoor air quality. Proper installation, ventilation, and use of low-emission foam products reduce these risks. Regular monitoring helps maintain a healthy indoor environment.