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Paint and Coatings Industry Standards
D7190 Standard Practice to Evaluate Leaching of Water-Soluble Materials from Latex Paint Films
Surfactant staining is a common problem with exterior house paints, particularly when subjected to humid environments (such as morning dew) shortly after application.
Interior paints used in humid areas such as kitchens and bathrooms may also experience surfactant staining.
Leaching of water-soluble materials may be dependent on colorant dispersions that are mixed into tint base paints. Other paint components may also affect the leaching of water-soluble materials.
1.1 This practice covers the ability of a latex paint film to resist staining caused by the leaching of water-soluble materials when contacted with water shortly after application.
1.2 Water staining is attributed to the leaching of surfactants or other water-soluble materials from a paint film.
