Greyboard is a premium quality solid grey backing board with a neutral pH. Excellent for dry mounting, a backing support or even a base for papier mache and modelling. Available in 2mm or 2.5mm sheets A1+ and A2+. Greyboard is easy to cut using a sharp scalpel or a heavy duty craft knife, and is an inexpensive way of producing good quality models quickly. Greyboard has proved to be very popular with scale modellers, architects and students.