How do temperature and surface moisture affect bitumen emulsion application performance on site?

Temperature influences viscosity, breaking time, and curing. Low temperatures slow water evaporation and can delay breaking, while very high temperatures can cause rapid breaking and poor leveling. Surface moisture can be both helpful and harmful: slight dampness may not be critical for some grades, but standing water or saturated substrates prevent adhesion and can trap water, weakening the bond. Wind and humidity also affect cure rate. Best practice is to apply within the recommended temperature window, ensure surfaces are clean, and avoid application ahead of rain or on visibly wet substrates.