IAQ problems in buildings are often characterized by unusual odours or occupant health and comfort complaints, to name only a few. The potential causes can be difficult to find and rectify. Contaminants may be introduced into the building air stream from indoor or outdoor sources, or both, and may be transitory in nature.
LEA uses state of the art data-logging instrumentation, and sampling and analytical techniques to monitor building air quality and comfort factors over days or weeks (as opposed to spot sampling), in order to study conditions under a variety of environmental, operating and occupancy states. Usually, ventilation efficiency, temperature and relative humidity, exhaust gases, formaldehyde (from off-gassing building materials, adhesives, etc.), particulate, and volatile organic compounds (VOCs) are amongst the factors studied. Where building conditions suggest the possibility of mould contamination, fungal spores may also be counted and identified by species.
The assembled data are used to prepare a detailed report describing both the identified issues, proposed solutions and any recommended follow-up actions.