Coatings and corrosion
ISO 2808: Paints and varnishes, determination of film thickness
The method standard behind coating thickness measurements.
Reference noteThis page is an independent plain-language summary written by QUALITAS TR. It does not reproduce the standard. Always work from the current official edition, available from ISO, the International Organization for Standardization, and national standards bodies such as TSE in Turkey (official page). QUALITAS TR supports organisations against this standard; it does not certify them.
01Purpose
ISO 2808 describes methods for measuring the thickness of coatings applied to a substrate, including wet film, dry film and uncured powder.
02Scope
Methods include mechanical, gravimetric, optical, magnetic, eddy current and ultrasonic techniques, with guidance on suitability.
03Main requirements
- Selection of method by substrate and coating
- Gauge adjustment and verification
- Measurement procedure
- Reporting
04Typical applications and industries
Paint and powder coating inspection. Acceptance rules for structures often come from ISO 19840.
05Audit and inspection considerations
- Is the gauge verified on a representative substrate?
- Are sampling rules applied?
06Common nonconformities
- Gauge not verified
- Readings on edges or welds treated as general readings
07How QUALITAS TR can support
Use our DFT calculator and see coating measurement.