Formboard (more commonly called foam board or foam core) is a lightweight, rigid display material made of a polystyrene foam core sandwiched between two paper or plastic facers. It is one of the most popular and affordable substrates for short- to medium-term indoor advertising and displays.
Key characteristics
Very lightweight and easy to handle
Smooth surface that accepts digital printing, mounting of prints, or vinyl graphics
Rigid enough to stand on easels or be mounted on walls
Inexpensive compared with PVC, acrylic, or Maxmetal
Easy to cut with a utility knife or CNC
Common thicknesses: 3/16″ (≈5 mm) and 1/2″ (≈13 mm)
Best uses for advertising & displays
Indoor posters and mounted graphics
Trade show and event signage
Point-of-sale (POS) and countertop displays
Temporary presentations and lobby signs
Real estate open-house boards (indoor use)
Photo mounting and portfolio displays
Short-term promotional signage
Directional or informational signs for indoor events
Advantages
Low cost
Lightweight (easy to transport and hang)
Clean, professional appearance when printed or mounted well
Quick turnaround — ideal for last-minute needs
Can be printed directly (UV flatbed) or have graphics mounted to it
Limitations
Not suitable for outdoor use — the paper facers absorb moisture, causing warping, bubbling, or delamination in rain or high humidity
Edges can crush or dent if handled roughly
Less durable than PVC, Coroplast, acrylic, or Maxmetal
Limited lifespan even indoors if heavily handled

FOAMBOARDS
Foamboard printing is a process of printing images or text on a foam board. A foam board is a lightweight and rigid board that has a foam core and a paper backing on both sides. It is also known as foam core, foamex, or foamcore.



