Cast vs Calendered Vinyl for Vehicle Decals
Cast and calendered vinyl can look the same on a roll, but on a truck or car they behave very differently. Here is the short version so you know what you are buying.
The short answer
- Cast vinyl is thinner and more flexible, stays where you put it, and lasts longer outdoors. It is the better choice for vehicles, curves, and the Arizona sun.
- Calendered vinyl costs less and works well on flat surfaces and short-term jobs, but it tends to shrink back over time, especially in heat.
How each one is made
- Calendered vinyl is made by heating PVC and rolling it out into a sheet. Stretching it that way leaves stored tension in the film, so it tends to pull back over time.
- Cast vinyl is made by pouring liquid PVC onto a moving sheet and letting it dry. It is never stretched, so it has no built-in tension to pull back.
Side by side
| Cast | Calendered | |
|---|---|---|
| Thickness | Thinner (about 2 mil for ORACAL 751C) | Thicker (about 2.5 mil for ORACAL 651) |
| Shrinkage | Stays put | Can pull back over time, especially in heat |
| Curves, rivets, corrugations | Follows them | Works against its own tension |
| Outdoor rating* | ORACAL 751C: 7 years for colors, 8 for black and white | ORACAL 651: 6 years for colors |
| Cost | Higher | Lower |
| Best for | Vehicles, fleet graphics, curves, long life | Flat signs, window decals, interior lettering, short-term jobs |
*ORAFOL published ratings for unprinted film on a vertical surface. They are not a warranty, and hot sun and horizontal surfaces such as hoods and roofs can shorten the life of any film.
Why we use cast vinyl
Our sponsor decals, DOT numbers and truck lettering are cut from premium cast vinyl: ORACAL 751 in most colors, and 3M 7125 for matte black. On a truck door, edges and curves are where cheaper film tends to lift or shrink, and the sun in Arizona makes that worse.
Which should you choose?
- Choose cast for anything on a vehicle, anything with a curve, anything you want to last for years, and anything that sits in the sun.
- Calendered can be fine for a flat sign, a window decal, or something you only need for a season.
Need help choosing?
Call or text 480-650-9314, or request a quote. Ready to order? See our DOT & MC number decals and truck door lettering.