Rust-Oleum® Specialty Magnetic Primer is a base coat that allows you to create a surface that attracts magnets almost anywhere. Can be applied to wood, metal, masonry, drywall, and plaster. Light grey finish can be top-coated with any colour, or with Chalk Board Paint to create a magnetic chalkboard. Create a fun and unexpected way to hang notes, photos and more. Now the Specialty Magnetic primer is 3x stronger!