Question
What's the difference between Coroplast and foam board signs?
Answer
The core difference is the material and where each one survives. Coroplast is a waterproof plastic for outdoor use and rough handling, while foam board is a paper-faced foam meant for clean indoor display.
| Feature | Coroplast | Foam board |
|---|---|---|
| Material | Corrugated plastic (polypropylene) | Paper-faced foam core |
| Weight | Light, with hollow flutes | Very light foam core |
| Surface | Ribbed, slightly textured | Smooth and flat |
| Water resistance | Waterproof | Absorbs moisture, warps |
| Best use | Outdoor, weather, handling | Indoor presentations, trade show displays, mounted graphics |
| Durability | Resists dents and bending | Dents and creases more easily |
Rule of thumb: if it might meet weather or repeated handling, choose Coroplast. If it stays indoors and needs a smooth rigid surface, foam board gives you the cleaner face, for example trade show graphics or gallery signage.
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