Term: overcoating interval

The term "overcoating interval" refers to the minimum and maximum time period that must elapse between applying one coat of paint and applying the next coat over it. This interval ensures proper adhesion, curing, and performance of the paint system.

There are typically two types of overcoating intervals:

1. Minimum overcoating interval – The shortest time you must wait before applying the next coat. Applying too early can lead to issues like solvent entrapment, poor adhesion, or surface defects.

2. Maximum overcoating interval – The longest time you can wait before applying the next coat without additional surface preparation. If exceeded, the surface may need to be abraded or cleaned to ensure proper adhesion.

Overcoating intervals vary depending on factors such as:

• Type of paint or coating system (e.g., epoxy, polyurethane)
• Ambient temperature and humidity
• Film thickness
• Manufacturer’s specifications

In practice (especially in Australia’s climate), always refer to the product’s technical data sheet (TDS) for accurate overcoating intervals, as environmental conditions can significantly affect drying and curing times.