Skip to main content
Printulu Blog

Signage: What materials are they made of, and which should I choose?

By Jeanne Le Roux6 minute read
Side view of concentrated female employee wearing casual clothes and eyeglasses standing near scanner and copying documents while working and looking at camera

Picture this:

You're about to learn everything about "Signage What materials are they made of, and which should I choose?" β€” without the jargon, without the fluff, and with at least one dad joke that'll make you groan. Grab your coffee. Let's go.

Key Takeaways

6 min read

  • 1What you need to know before printing
  • 2Common mistakes to avoid
  • 3How to get the best results

When choosing a sign, we talk a lot about graphic design and artwork choices. These are essential for customer impact and leaving a lasting impression. But just as necessary are the materials used in making signs. Will it be sturdy enough for rough weather? Is it cost-effective? How heavy is it? And can I run through it like a marathon winner?

These are valid signage questions, and here at Printulu, we've got the answers!

<AcademyQuote> The right material choice can make or break your signage investment. It's not just about looking good – it's about lasting long enough to deliver your message effectively. </AcademyQuote>

What are signs made of?#

That's a pretty big question! Signage doesn't have one form. You can take the budget option of chalkboards and hope someone in your store has beautiful handwriting. Or you can invest in long-lasting Correx and ABS boards for long-term signage results. The range is massive, so let's break it down.

Correx#

Ready for some metallurgy? Correx is an extruded twin-wall fluted polypropylene sheet. What did you say, you ask? I only know about three of those words. Don't worry!

Correx board is, simply put, a rigid and sturdy plastic board. It has two walls in it and is super versatile. It's what some call a 'durable plastic' meaning it has a service life of about a year. It's also very lightweight, which makes it easy to mount and keep in place.

Why do we use Correx? Because it just makes sense! Correx is one of the most affordable signage options on the market, and it's waterproof, effective to print on, and easily customisable. Also, Printulu has the added fancy trick of printing directly onto the Correx, so there's no need to attach expensive and less durable vinyl.

Correx is best used for indoor or outdoor signage and can be affixed pretty much anywhere. The only thing worth noting is that, because it's so lightweight and portable, if you plan on putting your Correx unsupported in windy weather, it's probably worth mounting it on a wooden frame to stop the sign bowing and bending.

These signs are seen in estate agent board form, site signage, and other short term miscellaneous signage jobs.

ABS Board#

ABS stands for Acrylonitrile butadiene styrene. Try saying that five times fast (I could only say it twice before my tongue got tangled)! ABS, despite its horrid name, is actually everywhere. It's popular because of its low cost and easy manufacturing. Better yet, it's durable and easy to print onto, so you won't lose any of your beautiful graphics in the process.

ABS Board is exceptionally versatile and durable. ABS is a little pricier than Correx but is a long term investment. ABS board is suitable for external use and is especially tough. ABS is scratch resistant and very light. This makes it easy to transport and mount.

ABS Board is most commonly used in outdoor signage, information signs, and directional boards. But, hey, let's not pigeonhole! These materials are perfect for any job you might be after!

Chromadek#

Chromadek is an epoxy coated, galvanised steel sheet used for both internal and external signage needs. We start with a steel sheet. This is painted and baked, leaving the Chromadek smooth, slick, and long-lasting. Chromadek is then UV coated for extra robust durability.

Chromadek has a high visual impact from up close and at a distance. For these reasons, it makes for fabulous outside billboards and full-size signs.

<AcademyProTip> When choosing between materials, consider your timeline. Need something for a weekend sale? Go Correx. Building a permanent business sign? Chromadek's your friend. </AcademyProTip>

Coroplast#

Coroplast is the brand name of corrugated plastic. It's affordable and features three layers of thin, polypropylene plastic cardboard. This makes Coroplast super lightweight and resistant to dents. However, it also means that Coroplast is another short term solution. It's waterproof and weather-resistant, but don't expect more than a few months from an external Coroplast sign.

Vinyl#

I love a good <a href="https://www.printulu.co.za/product/banners?utm_source=blog&utm_medium=content&utm_campaign=internal" class="internal-link text-[#007756] hover:text-[#005d42] underline font-medium">banner</a>! Vinyl is used in most internal and external banners. It's super lightweight, flexible, and beautiful to print onto. You have the choice of matte or shiny finishes, and Vinyl 500 gsm options are weatherproof! Vinyl is also highly affordable and easy to use internally or externally.

Aluminium (Metal Signage)#

Aluminium signs require vinyl and lamination to be printed on. This can distort the image and artwork quality. However, aluminium signs are the forerunner for durability! This sturdy and lightweight metal is perfect for long term external signage. It's weather and UV resistant and relatively inexpensive. Coroplast, ABS, and Correx tend to be more affordable, but it all depends on what sign you're producing.

Carved Wood#

Ooh so artsy! Carved Wood signs are old school, classy favourites for boutique stores and hipster cafes. We don't offer this service, and carved wood tends to be the priciest option on this list. However, if this is the aesthetic you're going for – why not work with our great graphic design team to come up with a similar feel for a printed sign?

Chalk#

Chalk is quick. Chalk is easy (if you're blessed with legible calligraphy). It also has a life span of around 2-3 days and can be time-consuming. In saying this, chalk and a chalkboard is super cheap and can be used for numerous occasions! It depends if you feel like drawing your logo and signage every day!

<AcademyDadJoke> Why don't signs ever get tired? Because they're always board! </AcademyDadJoke>

Get Printing Tips in Your Inbox

Join 5,000+ South African businesses. Weekly insights, no spam.

Frequently Asked Questions

What signage material is best for outdoor use in South Africa?

Chromadek is the best choice for outdoor signage in South Africa. It's an epoxy-coated galvanised steel sheet that's UV-coated for extra durability, weather-resistant, and long-lasting. ABS board is also excellent for outdoor use, being scratch-resistant and tough.

What is the difference between Correx and Chromadek signage?

Correx is a lightweight, fluted polypropylene plastic board that's affordable and waterproof but has a service life of about 1 year. Chromadek is a steel sheet with epoxy coating and UV protection, making it much more durable for long-term outdoor signage (5+ years). Chromadek costs more but lasts significantly longer.

How much does custom signage cost in South Africa?

Signage costs vary by material, size, and quantity. Correx is the most affordable option, followed by ABS board, then Chromadek for premium durability. Printulu offers competitive pricing with direct printing (no vinyl attachment needed). Contact us for a custom quote based on your specific requirements.

What size should my business sign be?

Sign size depends on viewing distance and placement. For storefront signs, 600mm x 900mm or 900mm x 1200mm are common. For A-frames and pavement signs, 600mm x 900mm works well. Large format banners can be custom-sized up to several metres. Consider readability from your target viewing distance.

Can I print directly on signage materials?

Yes, Printulu prints directly onto Correx, ABS, and Chromadek boards. This eliminates the need for vinyl application, reducing cost and improving durability. Direct printing produces vibrant, long-lasting graphics that won't peel or bubble over time.
P

Written by

Printulu Team

South Africa's Leading Online Printing Experts

The Printulu team brings decades of combined experience in the South African printing industry. From business cards to large-format banners, we help thousands of businesses and individuals get professional printing results β€” delivered fast, priced right, and printed with pride in South Africa.

Share:

Keep Learning

How to Save Money on Banners and Flags. (Which Banner Should I Buy?)

You may have seen our trusty pull-up banner in some of our videos, like the one below where Trudi, our graphic designer, explains our design process. Even if you haven’t seen it yet, you should note that we’ve added a huge amount of new banners and flags to our website. Yep – your options to

6 min read

Banner: Is It Worth The Cost? (Good Or Catastrophic For Your Business?)

Banners can be an effective marketing tool for businesses, but whether they are worth the cost and whether they will have a positive or negative impact on your business depends on a variety of factors. Here are some things to consider when ordering a banner: Target audience: Banners are most effective when they are seen

7 min read