How long does it take for water-based alkyd enamel paint to dry?

　　The drying time of water-based alkyd enamel paint is significantly influenced by temperature and humidity. Under standard conditions—room temperature (25℃, relative humidity ≤75%)—the surface-dry time is 0.5 to 2 hours, the fully dry time is 12 to 24 hours, and complete curing takes 7 days.

　　Drying time under different environments

• At room temperature (around 25℃): Surface dry in 0.5–2 hours—no stickiness when lightly touched by a finger; fully dry in 12–24 hours—coating film can withstand light friction; complete curing takes 7 days, at which point performance reaches its optimum.
• Low-temperature environment (5–15℃): The drying speed slows down, surface drying may take 3–4 hours, full drying requires 24–48 hours, and curing time takes 10–15 days.
• High-humidity environments (relative humidity > 85%): The paint film is prone to tackiness, and both surface-drying and full-drying times will be prolonged; in severe cases, this may even affect the adhesion of the paint film.

　　Key factors affecting drying speed

• Environmental conditions: The higher the temperature and the lower the humidity, the faster the drying process; low temperatures and high humidity will significantly slow down the drying process.
• Coating thickness: The recommended dry film thickness for a single coat is 30–50 μm. Applying too thick a layer can make it difficult for the coating to dry internally, increasing the likelihood of wrinkling and cracking.
• Ventilation: After construction, maintaining good ventilation can accelerate moisture evaporation and shorten drying time.