Blocking is the undesirable sticking together of two painted surfaces when pressed together such as a door sticking to the jamb.
Not allowing sufficient dry time for the coating before closing doors or windows
Poor conditions during the application or drying period (e.g. low temperatures, high humidity, condensation, rain or dew)
Sand back affected areas to a smooth and sound substrate and recoat.
Use a premium semi-gloss or gloss acrylic enamel paint, Dulux recommends Dulux Aquanamel®. Follow paint label instructions regarding dry times. Acrylic enamel paints have better early block resistance than vinyl latex paints, or solvent-based enamel paints.
Some water-based paint coatings exhibit a greater tendency to show poor block resistance, ensure that the paint being used is suitable for the area you are coating.
Have you noticed small droplets appearing on your fresh coat of acrylic paint? Don't panic – it’s a normal part of the curing process. Find out more.
Yellowing describes the development of a yellow cast in ageing paint solvent-based enamels.
Wrinkling is a term to describe a rough, crinkled paint surface, which occurs when uncured paint forms a 'skin'.
Tannin staining is the brownish or tan discoloration on a painted surface due to migration of tannins from the substrate through the paint film.