IMPROVEMENT OF INDOOR AIR-QUALITY IN 4 PROBLEM HOMES

The occupants of six houses suffered from symptoms which improved upon leaving their houses. In a previous study, tests were conducted in th ese six houses to measure various physical parameters related to their indoor environments. Four of these houses were subsequently renovated to improve indoor air quality. Tests were repeated on the four houses to assess the effectiveness of the applied remedial measures. The pos t-renovation tests which were identical to the pre-renovation tests, i ncluded measurements of air temperature, relative humidity, ventilatio n rates, air distribution patterns, levels of carbon dioxide, concentr ations of formaldehyde, and concentrations of volatile organic compoun ds. This paper describes the remedial measures applied to these houses . Also presented is a comparison of the ventilation conditions, and co ncentrations of chemical contaminants in the houses before and after t he renovation. Crown Copyright (C) 1998 Published by Elsevier Science Ltd. All rights reserved.