Causes: - Painting in cool humid conditions or just prior to their occurence, such as late afternoon or just before or just after rain - If moisture from any source collects on fresh paint before it has thoroughly dried, leaching may appear Solutions: - No painting if temperatures are below 50 degrees or late PM when it is cooler - Coolness extends drying - Surfactants that usually evaporate rise to the surface - The residue disappears from weathering in about a month and doesn't harm the paint - It is best to let nature take it's course, but rinsing sometimes will easily remove residue - Leaching cures itself in a little time - Surfactants are necessary to a paint formula. They evaporate and never are a part of the dried paint - Slow drying due to coolness or humidity, prevents the surfactants from evaporating and a blotchy sometimes glossy residue appears |
