Indoor environment is vital for human health. Two §university problem buildings were compared with two §control buildings. Health assessment included tear §film, nasal patency, nasal lavage analyses and §markers for allergy and atopy. Psychosocial and §physical environment was assessed with §questionnaires, inspections, air microbiology, §thermal climate and air quality at 56 points and §modelled for all work sites. Impact of gender §differences, allergy and home environment were also §studied. Exposure differences between problem §buildings and controls were small, variations...