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Small and Large Bubbles

When people refer to air trapped beneath a vinyl graphic, they often use the general term "bubble." In reality, several different types of bubbles and bubble-like defects can appear throughout the life of a graphic. While many may look similar, their causes, prevention methods, and corrective actions can differ significantly. Understanding these defects allows installers to diagnose problems more accurately, correct them more effectively, and improve long-term graphic performance.

small bubble

Small Bubbles

Small bubbles are generally less than ½ inch (12 mm)
in radius and can often be removed by applying thumb pressure and pushing the air toward the nearest edge or release channel.

 

 

 

 


Large bubble

Large Bubbles

Large bubbles exceed approximately ½ inch in radius and are typically caused by larger missed installation areas. The preferred correction method is to divide the bubble into smaller sections and work the air toward an edge or release point.

 

 

 

Prevention

    • Use consistent squeegee pressure
    • Overlap passes by at least 1 inch
    • Maintain a 45-degree squeegee angle
    • Work methodically across the graphic
    • Allow printed graphics to fully outgas before lamination