What Is Polystyrene Foam Board?
What Is Polystyrene Foam Board? Polystyrene foam board (PSF) is a lightweight, waterproof and rigid plastic material that’s made out of polystyrene resins and water. It’s often used for signs, labels and packaging because it’s inexpensive and easy to cut with a utility knife or electric saw. It comes in several sizes and thicknesses, so […]