Interesting Facts About Coroplast Signs
(Corrugated Plastic Signs)
Coroplast have become surprisingly popular over the years.
But is coroplast really the right sign material for your project?
Knowing the most pertinent facts about this unique sign material is the key.
Here are the key points to know about custom Coroplast signs:
- Ideal for short term outdoor use—from 1-day events up to 3 years
- Will last up to 15 years indoors
- Completely waterproof
- Slightly ribbed surface looks like "plastic cardboard"
- Standard 3/16" thickness (4mm) feels similar to stiff cardboard
- Readily available in a highly rigid, 1/2" thickness
- Coroplast plastic signs can be one-sided or two-sided
- High tolerance for cold and hot weather temperature extremes
- Easy to display and mount
- Popular alternative to foam core mounting board
- Coroplast can be made any size you want
- Cut into virtually any shape
- Any design, artwork, photo or logo can be used
- And virtually any color you want.
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Frequently Asked Questions About Custom Coroplast Signs
Coroplast is a tough, waterproof, corrugated plastic sign material which resembles the appearance of "plastic cardboard". The hollow-fluted design of Coroplast makes this sign material extremely lightweight, easy to handle and display in a number of ways.
As you can see in this photograph, Coroplast plastic has hollow flutes on the inner core of the sign material. Corrugated Coroplast has semi-smooth plastic on both the front and back of its core, and its slight ridges can only be seen up close.
Corrugated plastic signs are intended for interior signs or short term outdoor signs, up to 3 years.
Many materials are stronger than a printed Coroplast sign, however the most common replacement is aluminum.
When it comes to the rigidity of a sign, a vinyl banner is much more flexible than a Coroplast yard sign.
Full color Coroplast signs are the perfect solution when a sign is needed for a short term outdoors. Some of the applications that are most popular are:
- Real estate signs
- construction site signs
- point of purchase displays
- special event signage
- directional and informational signage
- trade show
- golf tournament sponsor signs
Coroplast is an extremely light weight yard sign. Because of the light weight it is a popular alternative to poster board and foam core mounting board.
Coroplast is not made to withstand winds, however if you place it in a metal frame it will increase the resistance that the Coroplast can withstand.
Coroplast is designed for short term use outdoors. Depending on the vinyl that you choose and the weather conditions your sign is exposed to, your sign can last up to two years in the sun.
Corrugated plastic signs fit all standard real estate frames or you can use the more economical Coroplast sign stakes. Coroplast can be attached to a door, hung inside a window or from ceilings.
Custom corrugated plastic signs can be made in one piece up to 4' x 8'. Coroplast signs standard size for most real estate and yard signs is 18" x 24". Larger sizes are possible if multiple sheets are installed together on a flat surface.
Coroplast sign material comes in sheets up to 4' x 8'.
Coroplast is not intended for long term use and does not stand up to winds very well. However, if the sign is for temporary use and will be outdoors for only a short period of time, it is often the best answer to your signage needs.
Coroplast comes in a number of colors. However, if the color you need is not available, the magic of digital printing can take care of that for you!
Typically your custom Coroplast sign will ship within 48 hours of your final approval of your proof. If you need it faster than that, just let us know!
There are a few things to look at for the guarantee of an Coroplast sign. The workmanship is always guaranteed by us for one year. The manufacturer guarantees the Coroplast plastic itself for up to two years.
The other consideration is the vinyl that you choose for your sign. There are two levels of vinyl that we offer, and they each have a different warranty. Intermediate vinyl lettering is intended for short term outdoor signs and is rated for 3-5 years. Our High Performance Vinyl Graphics will last 7-10 years outdoors, even under extreme environmental conditions.
While we routinely cut Coroplast into custom sizes, we usually only cut it into rectangular or square shapes. We do not cut Coroplast corrugated plastic into very customized shapes. The material does not lend itself to intricate cuts or shaping. Any custom shaping must be kept to a minimum.

