Summer heat
Sherwin-Williams warns that very high temperatures, over 100°F, can dry paint before it adheres, which can lead to peeling later. On hot days, good crews follow the shade around the house and work early.
Cooler days and dew
Many modern exterior paints can go on as low as 35°F, but cool nights bring dew. Sherwin-Williams recommends keeping temperatures in range and above the dew point for at least 48 hours after painting.
After rain and power washing
- Wait at least a day after heavy rain, and longer for wood and masonry
- Let the house dry fully after power washing
- Ask your painter how they check that surfaces are dry
