Correx advertising boards have become the go-to choice for businesses, estate agents, event organisers, and anyone needing affordable, versatile signage. But not many people know these boards come a different thicknesses. Whether you’re promoting a sale, advertising property, or creating directional signage for an event, correx boards offer the perfect balance of durability, affordability, and practicality.
In this comprehensive guide, we’ll explore everything you need to know about most popular correx advertising boards thickness options 2mm, 3mm, 3.5mm, 4mm and 5mm and to understand their best applications.
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The 5 Most Popular Correx Advertising Board Thicknesses
| Thickness | Best For | Outdoor Duration | Popular Applications | Recommended Sizes |
|---|---|---|---|---|
| 2mm | Backing boards & indoor use | Not recommended | Poster backing, framed displays | Small formats or if supported |
| 3mm | Short-term advertising | Up to 3 months | Estate agent signs, events | 600x400mm and smaller |
| 3.5mm | Extended outdoor use | 3-5 months | Commercial property signs | A1, A0 sizes |
| 4mm | Long-term advertising | 6+ months | Professional business signage | Large formats (2x1m) |
| 5mm | Maximum durability | 12+ months | Barriers, structural use | All sizes |
2mm
Best for: Backing boards and indoor applications
The thinnest option available, 2mm correx boards are perfect for mounting posters or supporting paper-based materials. They work excellently inside frames or when mounted flat against walls where they have structural support. However, we don’t recommend them for large unsupported surfaces as they are soft and tend to bend without proper backing. Think of them as a water-resistant alternative to poster printing with lamination.
3mm
Best for: Short-term advertising and budget-conscious projects
This is the most economical choice for outdoor advertising correx boards, making it ideal for estate agent correx signs, directional signs, and event signage correx printing. Perfect for campaigns lasting up to 3 months outdoors, depending on weather conditions. We typically recommend 3mm correx boards for one-off uses like selfie frames, welcome boards, or wedding table seating charts. School projects and small construction applications also benefit from this thickness, especially for temporary outdoor signage applications.
3.5mm
Best for: Extended outdoor use with better rigidity
Similar to 3mm but with enhanced durability, these outdoor advertising correx boards can withstand 3-5 months outdoors. The extra thickness provides better rigidity for A1 correx advertising boards or A0 sizes while remaining economical. Professional estate agent signs often use this thickness for the perfect balance of cost and performance in commercial applications.
4mm
Best for: Long-term advertising with professional appearance
These waterproof advertising boards offer excellent rigidity and durability without the premium cost of 5mm boards. They’re perfect for long-term advertising, especially when combined with custom correx board printing using durable vinyl sticker printing for a professional finish. For large formats like 2x1m, they’re often more cost-effective than alternative materials for construction site correx boards and permanent installations.
5mm
Best for: Maximum durability and structural applications
The premium option for corrugated boards, 5mm thickness is suitable for long-term installations like wall padding or barriers. They require no support braces and are strong enough for pop rivets or screws. While Chromadek metal plates might be cheaper and more durable signage option, 5mm correx offers the advantage of being lightweight and easy to cut while maintaining excellent rigidity.
Available Colors and Sourcing
| Color | Availability | Best Applications | Visibility Rating |
|---|---|---|---|
| White | Easy to source | General printing, professional signage | High |
| Black | Easy to source | Professional appearance, contrast printing | Medium |
| Yellow | Easy to source | Safety applications, high visibility | Very High |
| Blue | Low availability | Corporate branding, professional use | Medium |
| Green | Low availability | Environmental messaging, nature themes | Medium |
| Red | Low availability | Attention-grabbing, emergency signage | Very High |
Standard Sizes and Cutting Options
| Size Category | Dimensions | Best Uses | Popular Thickness |
|---|---|---|---|
| Full Sheet | 2.5m x 1.25m | Large installations, multiple signs | 4mm-5mm |
| Pre-cut Panel | 800mm x 600mm | A1 alternative, medium displays | 3.5mm-4mm |
| Pre-cut Panel | 600mm x 400mm | Estate agent signs, A2 equivalent | 3mm-3.5mm |
| Standard | A1 (594mm x 841mm) | Professional displays, presentations | 3.5mm-4mm |
| Pre-cut Panel | 600mm x 450mm | Custom applications, directional signs | 3mm-4mm |
Custom Cutting
One of correx’s biggest advantages is how easily it cuts. You can trim boards to any size or shape using just a craft knife or scissors, making it perfect for custom applications and creative designs.
Advantages of Correx Advertising Boards
| Advantage | Description | Best Application |
|---|---|---|
| Cost-Effective | Exceptional value for money, especially for temporary signage | Budget-conscious campaigns |
| Water Resistant | Polypropylene naturally resists water without weatherproofing | Outdoor applications |
| Easy to Work With | Simple cutting, drilling, and shaping for professionals and DIY | Custom projects |
| Rigid Structure | Provides stability when flexible materials won’t work | Self-standing displays |
| Multiple Decoration Options | Print, paint, or apply stickers for maximum design flexibility | Creative branding |
Disadvantages to Consider
| Disadvantage | Impact | Alternative Solution |
|---|---|---|
| Fluted Surface Texture | Rippled appearance may show through printing | Use foamboard for smooth finish |
| Weather Degradation | Thin boards become brittle in sun and wind | Choose thicker boards for outdoor use |
| Impact Damage | Susceptible to dents from impacts | Consider Chromadek for high-impact areas |
| Limited Long-Term Durability | Not ideal for permanent installations | Plan for replacement or use alternative materials |
| Not Suitable for Curves | Rigid nature prevents curved applications | Use flexible banner materials instead |
Choosing the Right Thickness for Your Project
Consider these factors when selecting your correx advertising board thickness:
- Duration: How long will the sign be displayed?
- Size: Larger signs need thicker boards for stability
- Environment: Indoor vs. outdoor, wind exposure, potential impacts
- Budget: Balance cost against performance requirements
- Support: Will the board be self-supporting or mounted?
Thickness Selection Guide
| Project Type | Recommended Thickness | Expected Lifespan | Budget Level |
|---|---|---|---|
| Event Signage (1-3 days) | 2mm-3mm | Single use | Economy |
| Estate Agent Signs | 3mm-3.5mm | 3-6 months | Budget |
| Business Advertising | 4mm | 6-12 months | Standard |
| Construction Site Boards | 4mm-5mm | 12+ months | Professional |
| Protective Barriers | 5mm | Long-term | Premium |
What Are Correx Advertising Boards?
Correx is a brand name for polypropylene fluted board – a type of corrugated board plastic that’s lightweight, durable, and waterproof. The fluted design creates a rigid material that’s perfect for both indoor and outdoor advertising applications.
Popular Uses for Correx Advertising Boards
Estate agent correx signs are the most popular application in South Africa, but outdoor advertising correx boards serve many industries. From temporary outdoor signage to professional estate agent signs, these versatile boards meet diverse advertising needs:
- Estate Agent Correx Signs: “For Sale” and “To Let” signs remain the most common application, with professional estate agent signs dominating the market
- Event Signage Correx Printing: Festival boards, welcome signs, and directional signage for temporary outdoor signage needs
- Political Campaign Correx Signs: Cost-effective election advertising that withstands outdoor conditions
- Construction Site Correx Boards: Safety notices and company branding for long-term outdoor exposure
- Retail Promotion: Custom correx board printing for point-of-sale displays and promotional signage
- Wedding and Party Signage: Waterproof advertising boards perfect for outdoor celebrations
Here is a great video about correx boards
Conclusion
Whether you’re advertising property, promoting an event, or creating directional signage, correx boards deliver professional results without breaking the budget. Consider your specific requirements for durability, size, and environment to choose the perfect thickness for your next advertising campaign.
Ready to get started with correx advertising boards? Contact us today to discuss your requirements and get a quote for your custom correx board printing project.
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