CONTRIBUTING FACTORS TO SBS


CONTRIBUTING FACTORS TO SBS

  • Inadequate Ventilation e.g.
    • If HVAC systems do not effectively and adequately distribute air to maintain the health and comfort of building occupants.
  • Biological Contaminants – may breed in stagnant water that has accumulated in ducts, humidifiers and drain pans or where water has collected on ceiling tiles, carpeting or insulation.
    • Bacteria;
    • Molds;
    • Fungus;
    • Yeasts;
    • Pollen; and
    • Bird or Insect droppings

Physical symptoms include cough, chest tightness, fever, chills, muscle aches, and allergic responses such as mucous membrane irritation and upper respiratory congestion.
One indoor bacterium, Legionella has caused both Legionnnaire’s Disease and Pontiac Fever.

  • Chemical Contaminants from Indoor Sources which may emit Volatile Organic Compounds (VOC’s) including formaldehyde e.g.
    • Adhesives;
    • Upholstery;
    • Carpeting;
    • manufactured wood products;
    • copy machines;
    • pesticides; and
    • cleaning chemicals
  • Chemical Contaminants from Outdoor Sources – outdoor air that enters a building can be a source of indoor air pollution entering the building through poorly located air intake vents, windows and other openings e.g.;
    • Pollutants from motor vehicle exhaust;
    • Plumbing vents;
    • Building exhaust – bathrooms and kitchens