How long alkyd paint takes to dry completely depends on definition of dry to touch versus fully cured. Alkyd paint is oil-based and dries slowly by oxidation, not just evaporation. Dry to touch time is typically 4 to 8 hours for standard alkyd, with some fast-dry alkyds dry to touch in 2 to 4 hours. Dry to handle or recoat time is usually 16 to 24 hours, meaning you should wait at least 24 hours before applying second coat or light use. Fully cured, meaning hard, chemical resistant, and not tacky, takes much longer, typically 7 to 30 days depending on temperature, humidity, ventilation, and thickness. In ideal conditions of 70 degrees Fahrenheit and 50 percent humidity with good ventilation, alkyd may be fully cured in 7 days for light use, but full hardness can take up to 30 days. High humidity, low temperature below 50 degrees, and thick coats extend drying dramatically, causing tackiness for days. So alkyd paint dries to touch in 4 to 8 hours, recoat in 24 hours, and cures completely in 7 to 30 days. Ensure good ventilation and thin coats for faster cure.
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