Most people ordering a sign have never had a reason to learn the difference between corrugated plastic and PVC, and there’s no reason they should have. But the material is the single biggest lever on both price and lifespan, and picking wrong in either direction costs money. Either you reprint in three months or you paid triple for something that was coming down after the weekend anyway.
Here is the whole decision, in the order it actually gets made.
Question one: how long does it live outside?
That’s it. That’s the question. Everything else follows from it.
A weekend to a few months → coroplast ($9/sq ft)
Corrugated plastic. Light, cheap, takes a stake straight through the flutes, and completely fine outdoors for a season. This is what yard signs, campaign signs, open-house signs, garage-sale signs, event directionals and real estate riders are made of, and there is no reason to buy anything else for those jobs.
The standard 18×24 inch yard sign is 3 square feet, about $27 each, less per piece on a real run. One practical note: signs going on a corner or a median should be printed double-sided, because a single-sided sign is invisible to half the traffic you paid to reach.
Indoors only → foam board ($10/sq ft)
Rigid foam core with a smooth paper face. It photographs beautifully and holds up perfectly. Inside. Presentation boards, easel signs, trade-show graphics, real estate open-house displays, conference room boards. Put it outside in a Sacramento July and it will warp, and put it outside in the rain and it will delaminate. Foam board is not an outdoor material and no finish makes it one.
Outdoors for a real stretch → PVC ($11/sq ft)
Rigid expanded PVC is the middle answer, and it’s underrated. It’s properly weatherproof, holds a clean edge, takes screws, and costs meaningfully less than aluminum. If a sign needs to survive a construction project, a leasing season, or a year on a fence, this is usually the right call.
Years, not seasons → aluminum composite ($13.50/sq ft)
Two thin aluminum skins over a solid core. Rigid, flat, and genuinely durable in Valley heat. This is what real estate listing panels, parking and site signage, building directories, and anything you don’t want to think about again are made from. Agents order these because a panel that lasts three listing seasons is cheaper than three coroplast panels plus the time spent replacing them.
Big, flexible, and coming down eventually → vinyl banner ($6/sq ft)
Not rigid at all, and that’s the point. Banners go where a rigid sign can’t: across a fence, along a building front, on a railing, above a booth. Hemmed and grommeted at the posted price. They’re the cheapest way to buy a lot of visible square footage, which is why a 3×8 at $144 outperforms a small rigid sign at similar money almost every time.
The two mistakes we see most
Buying aluminum for a temporary sign. A grand-opening sign, an event directional, a “now hiring” sign. These are coroplast jobs. Spending 50% more for a material rated for years on something you’ll throw away in six weeks is money that could have bought a second sign.
Buying coroplast for a permanent sign. The parking sign that’s still going to be there in 2029. The site signage at the entrance. The panel with your license number on it. Coroplast will fade and go brittle, and you’ll reprint it enough times to have paid for PVC twice.
What about the sun?
Sacramento summers are the real test for anything living outdoors, and the material matters more than the ink. A west-facing sign in full afternoon sun works harder than the same sign on a shaded north wall. If a sign is going somewhere brutal, say so when you order. That’s a reason to move up a material grade, or to plan on a laminate, and it’s worth knowing before we print rather than after you’ve watched it fade.
Still not sure?
Describe where the sign is going and how long it needs to be there, and we’ll tell you which one it is, including when the cheaper option is genuinely the right answer. Every rate above is on the posted price list, and you can run your size through the calculator before you call.