Easy Plywood Boat

paint foam board

Spray paint is contained inside an aerosol can and sprays a mist of paint that creates a more uniform application than brushes. some of the solvents in spray paint may damage the inner polystyrene in the foam board, so it should only be used on the paper exterior.. Paint the foam core board with gesso, which is a primer used to harden and seal surfaces such as foam core and canvas. use even paint brush strokes and cover the sides as well as the front of the board. allow the gesso time to dry completely before painting over it.. Get an artist paint brush for small decorations. if you’re doing small, intricate designs on your foam, use a paint brush.small artist paint brushes are great if you need control when decorating your foam project. these paint brushes are around 5–10 in (13–25 cm) long, and you can get them from an art store or general store for around $2 (