Why We Recommend Correx Boards for Lightweight, Cost-Effective Signage

When it comes to signage that needs to be light, affordable, and flexible, one of our go-to materials is Correx. In our experience, Correx board printing offers a great balance between durability and cost, making it ideal for a wide range of short- to medium-term applications. Here’s why we favour Correx, how resilient it is, and exactly who can benefit from using it. 

What Is Correx? 

Correx is the brand name (though many people also call it corrugated plastic or corriboard) for a type of twin-wall plastic sheet made from high-impact polypropylene resin. Structurally, it’s very similar to cardboard: two flat outer skins with a fluted, corrugated core in the middle. This construction gives it a rigid feel, while still keeping the material lightweight and manageable. 

How Durable Is Correx Board? 

One of the criteria we always check is how materials cope with real-world use. Correx fares very well in several respects: 

Water resistance: Because the core is polypropylene, Correx doesn’t absorb moisture like paper-based boards do.  

Impact resistance: Its fluted internal structure helps absorb knocks, making it more resilient. 

Temperature resilience: Correx can withstand a wide range of temperatures. It remains flexible in the cold and won’t warp or melt in typical outdoor heat.  

Lifespan: Indoors, Correx boards can last for several years. Outdoors, under harsh weather, their lifespan is more limited, typically around 1-2 years.  

What Is Correx Used For? 

There’s a huge variety of uses for Correx thanks to its versatility. We often recommend it for: 

• Advertising signage: Ideal for estate agent boards, election campaign signs, or promotional displays.  

• Point-of-sale (POS) displays: In retail, Correx is great for standalone promotional graphics or temporary promotional signs.  

• Temporary Event signage: For festivals, trade shows, or conferences, you can use Correx for directional signs, banners, or displays.  

• Public information and wayfinding: It also works well for temporary wayfinding signs or directional boards in both indoor and outdoor settings. 

How Big Can Correx Boards Be Printed? 

One of the practical elements we get asked about is size. The maximum size we can print in a single piece of Correx is 1200 mm wide by 2400 mm high. If you need something larger, you can ask for a bespoke quote but you may need to plan for joins. 

Email sales@tradeprint.co.uk and we’ll get you a quote.
Can I Design Online? 
Yes, you can now use our online designer to design your Correx boards using a mixture of your own artwork and our handy drag & drop online designer. 

If you prefer to design yourself, here’s a checklist you should consider when preparing your PDF x1a:2000 files: What is a PDF x1a:2001 

• 3mm bleed on all sides. 

• Full CMYK colour format. 

• Embed or outline your fonts 

• 150dpi 

• Safe Zone should be at least 5mm away from each edge, ideally 10mm for the best results. 

• font size of 18pt and a line weight of 2pt 

• Drill holes are 5mm wide, so if you choose them, design around them and keep important design elements away from them. 

• If all sides of the part are 400mm or more, drill holes will be placed 30mm from the edges. If any side is less than 400mm, drill holes will be placed 15mm from the edges. 

• Correx is a non-porous material, so leave at least 1mm between elements to avoid ink bleed. Don’t overlap elements 

• For custom shape boards, use a cut path – A 100% Magenta spot colour named Cut contour with the line weight set to 0.25pt - stroke paths, no fill.  How to create a custom cut shape for a rigid board.