Blocks stains, discolourations and irregularities for a smoother, more uniform paint finish. Apply to wood, metal, plaster, masonry or unglazed ceramic. Fast dry formula is sandable wet or dry. Cleans with soap and water. For interior and exterior use. Manufacturer: Rustoleum. Ideal for multi surface use, this White matt surface primer spray paint from the Surface primer range by Rust-Oleum has been specially designed to give a stunning finish to around your home. Simply apply and leave for 24 hours to dry - a great way to revamp your home. Covers 2m² per litre on average.