VOC Ventilation Calculator
Calculate ventilation needs and safe re-entry time after painting based on paint type, room size, and ventilation.
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VOCs (Volatile Organic Compounds) are chemicals that evaporate from paint as it dries. Zero-VOC paint (<5 g/L) is safe almost immediately. Standard latex (50-150 g/L) needs 8-24 hours of ventilation. Oil-based paint (up to 400+ g/L) can take 2-3 days. Cross ventilation (windows open on opposite sides) is the most effective method. Children and pregnant women should avoid freshly painted rooms for at least 48 hours.