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How do I choose the right thickness of acrylic sheet for outdoor signage?

December 17, 2025 by
How do I choose the right thickness of acrylic sheet for outdoor signage?
Support Agent

 

Choosing the right acrylic sheet thickness is crucial for creating durable and visually appealing outdoor signs. The thickness of acrylic affects the strength, stability, and lifespan of your signage. Here’s a detailed guide to help you select the best acrylic sheet for your outdoor signage needs.

1. Small Outdoor Signs (Up to 2 ft × 2 ft)

  • Recommended Thickness: 3 mm
  • Perfect for wall-mounted signs, nameplates, and small shop logos
  • Requires proper backing or support to avoid bending

2. Medium Outdoor Signs (2 ft × 3 ft to 3 ft × 4 ft)

  • Recommended Thickness: 4 mm – 5 mm
  • Ideal for shop boards, directional signs, and medium-sized acrylic signage
  • Works well with standoffs and metal frames for added durability

3. Large Outdoor Signs (Above 4 ft)

  • Recommended Thickness: 8 mm – 10 mm
  • Suitable for large signboards, storefront signs, and illuminated acrylic signage
  • Strong resistance to wind and vibrations for long-lasting performance

4. High-Wind or Freestanding Outdoor Signs

  • Recommended Thickness: 10 mm – 12 mm
  • Essential for hoardings, pylons, and roadside signage
  • Prevents bending and cracking even in extreme weather conditions
  • Often paired with steel or aluminum frames for extra stability

5. Additional Factors to Consider

  • UV Protection: Choose UV-stabilized acrylic sheets to prevent yellowing from sunlight
  • Mounting Type: Frameless signs require thicker acrylic for added strength
  • Location: High-wind or coastal areas need thicker acrylic to withstand environmental stress

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