Acrylic and PVC (foam board) are the two most common rigid substrates behind a printed or fabricated signboard. Both take print and cut-out lettering well; the difference shows up in weight, finish and how they age.
Acrylic
A glass-like, rigid plastic sheet — the material behind most raised-letter signage and backlit panels, since it's naturally clear and diffuses LED light evenly from behind. It has a premium, glossy finish straight off the sheet, holds a sharp edge when laser or CNC cut, and is noticeably more scratch- and impact-resistant than foam board.
- Best for: reception signage, raised/3D lettering, backlit and lightbox panels
- Finish: glossy, glass-like — reads as premium
- Trade-off: heavier and more expensive than PVC foam board per panel
PVC foam board
A lightweight foamed PVC sheet — easy to cut, easy to mount, and considerably cheaper than acrylic for the same panel size. It's a common choice for directional signage, temporary signboards, and printed panels that don't need backlighting or a glossy finish.
- Best for: directional signs, temporary or budget-conscious signage, printed flat panels
- Finish: matte — reads as functional rather than premium
- Trade-off: softer material, dents and scratches more easily than acrylic
Quick way to decide
If the sign is front-facing — reception, shopfront, anything meant to make an impression — acrylic's finish usually justifies the extra cost. If it's functional signage (wayfinding, temporary notices, back-of-house), PVC foam board does the job for less.