TechnicianVision · Knowledge base
Back-To-Basics: Clearcoat Film Thickness
I-CAR · August 8, 2019
Summary
This article highlights the critical importance of monitoring clearcoat film thickness during defect removal and refinishing. It establishes that average clearcoat thickness is around 2.0 mils and warns that removing too much clearcoat leads to hazing, discoloration, peeling, and finish failure due to lost UV protection.
What to do on the job
Monitor clearcoat film thickness during defect removal and refinishing to ensure the minimum required thickness is maintained or restored for UV protection.
How to use it
Use this document to justify the time and equipment (such as film thickness gauges) needed to measure paint depth during defect correction, or to defend the necessity of a full clearcoat blend/re-application when defect removal would otherwise compromise the UV-protective clearcoat layer.
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