Magnet Paint is a new and improved water-based emulsion paint which contains very fine ferrous powder, because of this the paint is dark grey in colour. The paint is best applied with a short haired nap roller. We recommend a minimum of three coats and adding more coats will increase the magnetic receptivity.Once dry, you can paint over it with any emulsion colour of your choice, our Blackboard Paint or our dry-wipe paint, Sketch Paint! Magnet Paint is water-based, non-toxic and is VOC and lead free. As the paint itself is not a magnet, but rather has magnetic properties that create a surface to which you can apply magnets to, it is safe to use in your home, school or office and will not affect your computer, television, video or any other magnet-sensitive equipment. This 1 litre tin covers approximately 2m² with three coats. This size tin is ideal for school, home and office use, or anywhere you need a reasonable sized magnetic work or play area.