What is Coroplast?


What is Coroplast?

Coroplast is essentially a “plastic cardboard”, made from three layers of polypropylene plastic substrate. When seen from the edge, it looks like a zig-zaggged middle, sandwiched between two smooth plastic sheets. This layered structure makes coroplast lightweight and very durable.

Coroplast is one of the most versatile products that we use.

Perfect for Low Cost Advertising

  • Used in every industry, such as real estate, schools, construction, packaging, etc.
  • Great for short and long term use
  • Comes in two thicknesses (one-eighth inch (4mm) & one-half inch (10mm)) and various colors
  • White is our most popular color. It provides a bright base for vibrant full color printing directly onto the coroplast.

From campaign signs, realtors, school spirit, yard art, construction sites, containers, packaging and stage displays, the list of how you can utilize coroplast goes on and on. At SignWay, we really like this stuff!

Coroplast is the cheaper alternative material of choice when you need to save money. And when compared to other signage materials, it’s pretty darn tough. We’re based south of Houston, and there are coroplast signs we’ve made that are still standing — even after countless storms, hurricanes and brutal, hot summer weather. It’s amazing stuff.

However, your coroplast sign is only as good as the ink used to print on it. That’s why we use HP Wide Spectrum Color UV inks, which are geared to last three to five years without lamination.

Here are some useful tips to get the most out of your investment in coroplast signs:

A large portion of SignWay's coroplast sign sales are from real estate brokers and agents.
A large portion of SignWay’s coroplast sign sales are from real estate brokers and agents.
Sports teams and school spirit campaigns know the value of coroplast signage.
Sports teams and school spirit campaigns know the value of coroplast signage.

Protect Your Coroplast Investment

Keep It Clean
When you plan to reuse your signs for, lets say the next political campaign or holiday season, remember to wipe them down. Moisture and its accompanying funk can accumulate on your sign after being outside and on the side of the roads, so wipe off the dirt and debris. You won’t need any kind of special cleaner, just a little soap and water and a light wipedown will do the trick.

Proper Storage
Before you put coroplast signs away, be sure to remove the h-wire stakes, and store the signs horizontally flat. Ideally, a temperature controlled environment that can remain dry is best. Try not to stack them with the wire-stakes still in them, as the weight stress can break and rip the plastic over time.

Usually, that is not the most realistic option for most of us. Like I said before, coroplast is tough so you can store them in a garage or shed where temperatures fluctuate, and lean them up against a wall, or just lay them flat. You can also leave the h-wire stakes in them, it just helps them from getting too scratched up.

Do Not Fold
If your sign was not designed or intended to be folded, do not fold them or keep them in a folded position for long periods. Folding will cause them to wear out faster.

Protect the Environment
Is coroplast recyclable? YES! Corrugated plastic is recyclable under Resin Code 5. Your local neighborhood / curbside recycling program may not always accept it, but almost any dedicated recycling facility will.

As you can probably tell from the above, we here at SignWay love to make signs for you with coroplast. Call us 281-990-5478 or tell us about the signs you want through email. We’ll be happy to give you an estimate.


-Eleazar Rios
SignWay Corporation