Foam Board Material

Foam Board for Indoor Signs and Displays

Foam board is a very light display material made from a polystyrene foam core with paper facers. It is commonly used for indoor event signs, presentations, mounted prints, temporary displays, and short-term promotional graphics.

Material

Paper-Faced Foam Board

Common Thicknesses

1/8 · 3/16 · 1/2 in

Environment

Indoor

Graphics

Direct Print · Mounted Prints

Overview

What Is Foam Board?

Foam board combines a lightweight foam center with smooth paper faces that accept printed graphics and mounted artwork.

FOME-COR, a major commercial foam board line, uses extruded polystyrene foam with coated or uncoated paper facers and is positioned for short-term interior displays because of its low weight, print surface, and easy fabrication.

Event Signs Welcome signs, schedules, directional panels, sponsor signs, and presentation boards.

Mounted Prints Photos, posters, maps, charts, and graphics mounted to a rigid backer.

Retail Displays Temporary promotional panels and presentation graphics.

Easel Displays Lightweight signs that can be moved and set up without heavy hardware.

Thickness

Common Foam Board Thicknesses

Thickness changes stiffness and edge depth, but foam board remains a lightweight display material.

1/8"

Thin Board
Useful for small mounted graphics and displays with support.

Less rigid than thicker foam boards.

3/16"

Common Display Gauge
A familiar starting point for presentation boards and short-term indoor signs.

Balances low weight with enough body for many tabletop and easel displays.

1/2"

Thicker Display Board
Provides more depth and stiffness.

Useful where a more substantial edge and stronger board feel are wanted.

Printing & Mounting

How Graphics Are Added to Foam Board

White coated foam board provides a smooth face for direct printing and mounting. It can also be knife-cut or die-cut for presentation and display work.

Direct Print Full-color graphics can be printed directly on compatible board.

Mounted Graphics Printed posters and photographs can be mounted to the face.

Knife Cutting Straight cuts and simple shapes are easy to produce.

Double-Sided Displays Both faces can be used when the board and display setup call for it.

Limitations

Where Foam Board Does Not Fit

Standard paper-faced foam board is not a general outdoor sign substrate. Moisture can affect the paper facers, and corners can dent or crush with rough handling.

Think of foam board as an indoor display material.

If the sign needs repeated handling, more impact resistance, moisture resistance, or long-term use, Ultraboard, PVC, ACM, or another rigid substrate may be a better choice.

Sizes

Common Foam Board Sign Sizes

Foam board signs are usually sized to the easel or the wall they will sit on. The sizes below cover most event and presentation work and cut efficiently from standard sheets.

18 x 24 in

Tabletop and Counter Signs
Menus, check in signs, table numbers and small directional signs.

Stands on a small easel back.

24 x 36 in

Easel Signs
Welcome boards, schedules and seating charts at events.

The most common size for a floor easel.

36 x 48 in

Large Presentation Boards
Maps, site plans and sponsor boards seen from across a room.

Use 1/2 inch board so it does not bow on the easel.

4 x 8 ft

Full Sheet
Backdrops and large wall displays for a single event.

Heavy to carry in one piece. Plan the route into the venue.

Three Boards

Foam Board, Gator Foam and Ultraboard

All three have a foam core. What changes is the face, and the face decides how long the sign survives handling.

Foam Board Paper faces. The lightest and most economical. Best for a single event or presentation.

Gator Foam Wood fiber faces. Much stiffer and harder to dent. Good for large mounted prints that stay on one wall. See our Gator Foam guide.

Ultraboard Plastic faces. Tough and moisture resistant, so it suits displays that travel or get cleaned. See our Ultraboard guide.

Handling

Getting Foam Board Signs to the Event in One Piece

Most foam board damage happens between the shop and the easel. A corner knocked against a doorframe or a board laid flat under other boxes leaves a dent that cannot be pushed back out.

Carry foam board signs on their edge, not flat.

Keep them in the sleeve or box they came in until setup, and keep them out of a hot car trunk, where the board can bow.

See our foam board signs page for event board options, or request a quote with the sizes, quantity and event date.

Choosing the Material

When Foam Board Is the Right Choice

Consider another material when

FAQs

Foam Board Questions

Can foam board signs be used outside?

Only for a few hours in dry weather. The paper faces absorb moisture and the board warps. For outdoor events, Coroplast or aluminum composite is the better choice.

What thickness of foam board should I choose?

3/16 inch suits most easel and tabletop signs. 1/2 inch is stiffer and better for large boards that must stay flat on an easel.

Is foam board the same as Gator Foam?

No. Both have a foam core, but foam board has paper faces while Gator Foam has much harder wood fiber faces that resist denting.

Can foam board be printed on both sides?

Yes. Both faces can carry graphics, which is useful for directional signs seen from two sides.

How long does a foam board sign last?

Indoors and handled carefully, it can be reused for several events. Corners and edges are what wear first.

On This Guide

Quick Facts

Material

Paper-Faced Foam Board

Common Gauges

3/16 in

Environment

Indoor

Common Uses

Events · Displays · Presentations

Related Materials

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