What Is Coroplast?
Corrugated plastic is made from polypropylene with two flat faces connected by internal flutes.
The fluted structure keeps the sheet light while giving it enough stiffness for many temporary sign applications. Coroplast is the best-known brand name in this category, and its manufacturer identifies signs and reusable packaging as core uses.
Why 4 mm Is Common for Yard Signs
Corrugated plastic is sold in several thicknesses. For sign work, 4 mm is one of the most common gauges because it balances weight, stiffness, cost, and compatibility with standard wire stakes.
Why the Flutes Matter
The internal channels are part of the structure. Their direction affects bending, cutting, and how hardware such as wire stakes enters the sheet.
For custom shapes, folds, or specialty mounting, flute direction should be considered before the sheet is printed and cut.
How Graphics Are Added to Corrugated Plastic
Coroplast Print is made for graphic work and supports direct and screen printing. The sheets are also easy to cut, route, die-cut, and finish.
Standard Coroplast Sign Sizes
Most Coroplast signs come out of a standard 4 by 8 foot sheet, so the common sizes are the ones that cut cleanly from it without waste. Picking one of them keeps the price down and lets the sign fit the stakes and frames that already exist.
Stakes, Grommets and Other Ways to Mount It
How a Coroplast sign is mounted decides whether it is still standing next week. The flutes make stakes easy, but anything bigger than a yard sign needs a mounting plan before the sheet is printed.
How Long Coroplast Lasts Outside
Coroplast does not rot or soak up water, so rain is rarely what ends a sign. Sun and wind are. The printed face fades first on a south facing lawn, and wind works the stake holes and corners loose over time.
For a sign that will be moved, stored and reused, keep it flat and out of the sun between uses. Corners bent in a car trunk are the most common reason a reused sign looks tired.
Temporary Sign Rules in New Jersey Towns
Most New Jersey towns write temporary signs into their sign ordinance, and the limits usually cover size, how many signs a property can have, and how long they can stay up. Contractor and real estate signs often have their own lines in the code.
Before ordering a large batch for several towns, check each town’s rule or ask us to. Our guide to temporary sign regulations explains what towns typically regulate and where to find the rule for a specific address.
Ordering Coroplast Signs From Our Linden Shop
We print Coroplast on our flatbed press in Linden, directly onto the sheet, on one side or both. Cutting and hardware are handled in the same shop, so the signs leave ready to put in the ground.
When Coroplast Is the Right Choice
Consider another material when
Coroplast Sign Questions