Foamcore or Foam board ( Memory) is a very strong, lightweight and easily cut material useful for sign making, backing artwork , mounting photographic and art prints, framing,and 3D design and sculpture. It consists of three layers — an inner foam layer of polystyrene sandwiched between an outer facing board of either white clay coated, black matte or color clay coated paper.

The foamcore has a built-in memory, allowing it to return to its original thickness after cutting. Foam board does not hold up well to wet adherents and is therefore not suitable for wet painting. For painting, Gatorboard is recommended.
However for sign painting with acrylics , as a temporary signage it is unmatched in its economy.

Available in all white foam board and all black foam board and Color foam board. White foam board has smooth, clay-coated, glossy liners.

Black foam board has a solid black core, wrapped in smooth,matte black paper.