Cast versus calendered, and why it matters
Calendered vinyl is rolled from an extruded sheet. It is thicker, less expensive, dimensionally less stable and prone to shrink back over time — appropriate for flat, short to medium-term applications like window decals and interior signage. Cast vinyl is produced from a liquid poured and cured at thickness, leaving almost no residual stress. It is thinner, far more conformable and holds its dimension for years, which is why vehicle wraps, riveted surfaces and compound curves demand it. Choosing calendered film for a curved long-term application is the single most common cause of lifting edges and premature failure.