A paper product that is used commonly in picture framing. Foam board is often called foam core. It is comprised of a very thin slice of soft foam with firm paper adhered to each side. Foam board is used as a support on which artwork can be presented cheaply for exhibitions. It is also used as a backing support when framing works on paper because it supports the back of the artwork and forms a protective barrier.
You can buy foam board from most leading art supply stores, if they don't stock it, or you require it in bulk try ordering it via a Framing Supplies Business or a Picture Framing Service.
To learn how to properly use framing materials like foam board, consider doing a Framing Course also see: Framing - Career Guide.
