Watching paint dry.

Did you know that when a water-based paint dries it first goes through two stages? 1.evaporation and 2. coalescence. The evaporation is when the liquids in the paint evaporate under normal atmospheric conditions namely namely air temperatures of 20ºC to 25ºC and 50% humidity. Coalescence is when a coherent film is formed so that when the evaporation of water causes the wet paint to shrink, the particles remaining are forced together in a process of mutual attraction and fuses together to form a polymer film.

So.........that’s always good to know.