What is dry film thickness (DFT) and why is it important?

Dry film thickness (DFT) refers to the measurement of the thickness of a dry coating once it has been applied and has cured or dried. This measurement is critical because the performance of a coating is highly dependent on its thickness.

A proper DFT ensures that the coating provides adequate protection against environmental factors, chemicals, and physical wear. If the DFT is too thin, the coating may not perform effectively, leading to issues like corrosion, chipping, or failure to meet specified durability criteria. Conversely, if it’s too thick, it can lead to problems such as cracking, peeling, or excessive buildup that can compromise adhesion. Thus, measuring DFT helps in ensuring the coating meets both the functional requirements and industry standards for the specific application.