Coatings will dry without problems if applied in suitable weather, if ponding areas are avoided, and adequate drying time allowed. Drying Time increases as temperatures fall and humidity rises. Direct sun is very helpful in drying. Overcast skies dramatically slow drying. Days are shorter in winter, allowing fewer hours of drying heat.
Temperatures often drop rapidly when the sun sets.
Condensation on roofs at night is common in cooler weather. This moisture must cause a delay in the application of coatings until the roof is dry the next day. This may be 10 AM or later in some areas. Higher altitudes or proximity to washes may cause increased roof frost, longer periods of moisture on the roof during the day and longer drying times. If water is present on a roof in the morning, it is likely to form there again the next night unless the weather warms.