Volatile organic compounds (VOCs) in residential indoor air during interior finish period: Sources, variations, and health risks

•BTEX concentrations are notably lower than previous levels in renovated residences.•I/O ratio of tetradecane/benzene can be an indicator of indoor/outdoor VOC origin.•Temporal variations of VOC concentrations were compound- or room-dependent.•TVOC concentrations suggest emissions of unknown VOCs from interior finishes.•The combined cancer risks for interior finishers surpass acceptable threshold limits.