Westfoam Foamboard White 5mm Single Sheet This economy range of foamboard has a CFC free polystyrene core and is white on both sides. It is not as rigid as the Premier range and does not cut as cleanly or easily, however it is an ideal economical alternative for students, hobbyists or craft purposes. This board is not suitable for use with solvents including spray paints and solvent based glues. Use the Premier Polyboard range if you intend to work with these materials. All prices displayed are for single sheets, to get the Westfoam discount simply add the Westfoam quantity or above to the basket.